# Questions Asked onOctober 22, 2012

1. ## Ratios of Similar Figures

1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 :

2. ## College Algebra

The concentration C of a certain drug in a patient's bloodstream t minutes after injection is given by C(t)=50t/t^2+25. Determine the time at which the concentration is highest. Round your answer to the nearest tenth of a minute.

3. ## Physics

An inventive child named Chris wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley, Chris pulls on the loose end of the rope with such a force that the spring scale

4. ## Math

Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's

5. ## physics

A crate pushed along the floor with velocity \vec{v} _{i} slides a distance d after the pushing force is removed.If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stopping?

6. ## physics

A car moving 30m/s slows uniformly to a speed of 10 m/s in a time of 5 sec determine 1) the acceleration of the car 2) the distance it moved in 3 sec

7. ## math

A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (2,3). Draw a figure that illustrates the problem. What is the area of the triangle A as a function of the x-intercept of the line?

8. ## Physics

An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N

9. ## Physics

An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N

10. ## physics

A human hair is approximately 55 µm in diameter. Express this diameter in meters. Answer in units of m

11. ## geometry

The volume of a sphere is 4,000 m3. What is the surface area of the sphere to the nearest square meter?

12. ## Physics

Compute the angular momentum of the earth arising from the following motions. (a) Earth's orbital motion around the sun. (b) Earth's rotation on its axis.

13. ## Physics

A current of 60 mA passes through a loudspeaker of resistance 6 Ω. What is the potential difference across the resistance of the loudspeaker? 36.0 V 10.0 V 0.36 V 0.10 V Answer B seems like it would be the obvious answer..

14. ## Physics

An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW? 8.1 Ω 1.4 Ω 81 Ω 14 Ω I'm stuck between A and B

15. ## Physics

Which of the following is correct for a step-down transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Step-down transformer increases the voltage from low value to high value. Number of turns in the

21. A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours. (2 points)

17. ## Physics

the input and output of hydraulic jack are respectively 1 cm and 4 cm in diameter. A lever with a mechanical advantage of 6 is used to apply force to the input piston. How much mass can the jack lift if a force of 180 N is applied to the lever and

18. ## Physics

A girl is skipping stones across a lake. One of the stones accidentally ricochets off a toy boat that is initially at rest in the water (see the drawing below). The 0.094-kg stone strikes the boat at a velocity of 14 m/s, 15° below due east, and ricochets

19. ## Physics

In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of −2.7 m/s. (b) Determine the

20. ## Physics

A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron? 1:2 1:3 2:1 3:1 I would think A, but

21. ## Chemistry I

In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the

22. ## collegemathwordproblem

When a number is decreased by 30%of itself, the result is 28. What is the number?

23. ## soicial studys help plz

1. Who was the French absolute monarch who called himself the "Sun King" to show that he was the center of the French nation? (1 point)Cardinal Richelieu Louis XIII Louis XIV Versailles 2. The Elizabethan Age was considered a golden age due to all of the

24. ## Geometry

The angle of elevation of a ladder leaning against a wall is 45°. If the distance from the base of the ladder to the wall is 15 feet, find the length of the ladder.

25. ## physics

A solid sphere of mass 0.604 kg rolls without slipping along a horizontal surface with a translational speed of 5.25 m/s. It comes to an incline that makes an angle of 38 with the horizontal surface. Neglecting energy losses due to friction, (a) what is

26. ## Math

On a standardized test, Phyllis scored 84, exactly one standard deviation about the mean. If the standard deviation for the test is 6, what is the mean score for the test?

27. ## Physics

By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.75 m/s and v2 = 1.65 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

28. ## physics

John runs at 4.6 m/s for 7.53 s along the x axis. How far does John run? Answer in units of m AND What relationship should be used to solve this situation? 1. x = v − t 2. x = v t 3. x = v + t 4. None of these 5. x = v

29. ## algebra

can anyone please help me set this problem up, I can do the math but I have tried for hours... Air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by$2 for every member. Due to space

30. ## Gen Chem

epsom salts, household ammonia, and rubbing alcohol are also consumer chemicals that could be used in this experiment. what are the chemical formulas for these substances?

31. ## Precalculus

cotx-cos^(3)xcscx

32. ## Physics

Two resistors 10 Ω and 5 Ω are connected in parallel across a 15 V battery. What is the potential difference across the 10 Ω resistor? 5 V 10 V 15 V 20 V I would think the answer would be B, or 15V

33. ## physics

A chair of weight 100N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.0N directed at an angle of 35.0^\circ below the horizontal and the chair slides along the floor. Using Newton's laws, calculate

34. ## Physics

A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.20 104 rad/s to an angular speed of 3.14 104 rad/s. In the process, the bit turns through 1.92 104 rad. Assuming a constant angular acceleration, how long would it take

35. ## physics

If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same.

36. ## trig

Show that the height, h, of the A-frame is equal to the expression 5sinc(1+2cosc). Im not sure what to do.

37. ## Physics

Why is it necessary to collimate the light source before using the prism to disperse the light? A. If white light enters the prism with different angles, some of the blue light will exit the prism with the same angle as the orange light. B. If white light

38. ## math

Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1. A. –14 – (–6) = –8 B. 14 – 6 = 8 C. –14 – 6 = –8 D. –14 – (–6) = 8 i put d but it was rong

39. ## Organic chem

What gases escaped during the sodium bicarbonate washing for the preparation of Synthetic Banana Oil lab. The isopentyl acetate, acetic acid, isopentyl alcohol, sulfuric acid, water , by-products goes through the sodium bicarbonate wash and the organic

40. ## math

Name a number that can be evenly divided by 6 and 7

41. ## Chemistry

Why is a Gas Chromatography separation more efficient than a fractional distillation? What characteristics must the liquid stationary phase have? describe a method for identifying a compound using GC analysis. If you could answer anyone of these that would

42. ## Physics

A volleyball is spiked so that its incoming velocity of +3.6 m/s is changed to an outgoing velocity of -16 m/s. The mass of the volleyball is 0.27 kg. What impulse does the player apply to the ball? Answer will be in kg*m/s

43. ## Statistics

A set of X and Y scores has SSx=10, SSY=20, and SP=8, what is the slope for the regression equation? a. 8/10 b. 8/20 c. 10/8 d. 20/8 For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a. a,b b. b,a c. 0,

44. ## CHEMISTRY

Not for homework, just practice problems I'm having trouble with. Knowing that one mole of KHP, C8H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralize 30.0 mL of the 0.10 M NaOH solution? if 24.5 mL of the 0.10 M NaOH solution is

45. ## Math

Cutting a circle into equal sections of a small central angle to find the area of a circle by using the formula A=pi*r*r

88. ## calculus

compute the maximum profit for the profit function P(x)= x^3/3-9/2x^2+8x

89. ## Chemistry

A student starts with 25 grams of sodium chloride as the limiting reactant and obtained 17.9 grams of dry pure sodium carbonate. What is the theoretical yield of sodium carbonate? What is the percent yield obtained by the student?

90. ## Algebra

2 cyclists travel opposite on circular trail that is 5 miles long. one cyclist travels 12 miles per hour, the other travels 18 miles per hour. How long before they meet?

91. ## physics

Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary. You need your projectile to land 214 m from its launch point. What

92. ## Physics

007 (part 1 of 2) An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 008 (part 2 of 2) If the same elevator

93. ## geometry

The volume of 2 similar solids are 27 ft3 and 216 ft3. The surface area of the larger solid is 300 ft2. What is the surface area of the smaller solid? Round your answer to the nearest tenths place

94. ## Chemistry 9

a) A 2.56 balloon contains 3.66 g of gas. Find the density b) A 45.3 g sample placed in a graduated cylinder causes the water level to rise from 25.0 mL to 41.8 mL . Find the density

95. ## chemistry

Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium? I got Qsp 1.38 * 10^-8 and Ksp = 3.45*10^-11 does that seem right? and does this mean fluride concentration will be soluble in water containing calcium?

96. ## Physics

007 (part 1 of 2) An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 008 (part 2 of 2) If the same elevator

97. ## Math

A shaded area reprsents approximately 95% of the scores on a standardized test. If these scores ranged from 78 to 92, whic could be the standard deviation?

98. ## CHEMISTRY

Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g Mass (after reaction): test tube + HCl(aq) + stir bar + capsule 25.300 g Volume of water displaced from the squirt bottle 148 mL Temperature of the CO2(g) 287.4 K Pressure (atm)

99. ## Science Help!

How much heat is needed to cause the following irreversible reaction? 200 g of liquid H2O at 50°C is heated to form 200 g of steam at 120°C

100. ## PHYSICAL SCIENCE

How do the pressure variation with depth affect our ability to explore the ocean?

101. ## history 103

The voyages of Zheng He reveal a powerful, accomplished, and restored Confucian state and civilization in China that was at least equal to, but very different from, emerging early modern Western civilization. List and describe the major factors that made

102. ## Chemistry 20 titration

1) oi50 . tinypic . com / ejh6vm . jpg The most suitable indicator for the titration is: A)methyl violet B)chlorophenol red C)methyl orange D)phenolphthalein 2-A base is titrated with an acid solution until the indicator changes colour. This change in the

103. ## Chemistry

A student starts with 25 grams of sodium chloride as the limiting reactant and obtained 17.9 grams of dry pure sodium carbonate. What is the theoretical yield of sodium carbonate? What is the percent yield obtained by the student?

104. ## Punctuation and period

Commas are used to set off _____ phrases. A) essential B) nonessential I answered nonessentials

105. ## chemistry 20 MC questions

1- The equipment needed to carry out a titration is: A) hot plate, pipet, and filter paper B) heat source, test tube, and filter paper C) heat source, pipet, and burette D) erlenmeyer flask, pipet, and burette 2- A student correctly predicted that 10.0 g

106. ## Physics

:'( Please help me....? (7 points) 2. Contrast the metric units of distance, time, and speed. Describe the relationship between them. Answer: (11 points) 3. A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of

107. ## physics

two kids push on a 10kg box. one pushes 100N to the west and the other pushes north at 200N. what is the acceleration of the pbject?

108. ## Physics help PLZ!!

Estimate the energy required from fuel to launch a 1465 kg satellite into orbit 1375 km above the Earth’s surface. Consider two cases: (a) the satellite is launched into an equatorial orbit from a point on the Earth’s equator, and (b) it is launched

109. ## Science

How much heat must be removed from 500 grams of water at 0°C to form ice at 0°C?

123. ## English

essy in mockingbird how Caitlin over Family struggle abput 700 word see example of different essay

124. ## physics

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

125. ## Chemistry

25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go

126. ## organic chemistry

a careless organic chemistry student was performing "competing nucleophiles in nucleophilic substitution reactions" experiment , and left his container of tert-butyl chloride and tert-butyl bromide open to the air for several hours. what happened to the

127. ## math

23 divided by 6=3.83333333333 the 23 is my points and i divide it to find my gpa how do i round the answer

128. ## Chemistry

In the theoretical reaction 2 B(aq) + 3 D(aq) ---> E(aq) + 4 F(aq) the concentration of D(aq) is 0.40 mol/L. If 25.0 mL of aqueous B is needed to react completely with 30.0 mL of aqueous D, the concentration of B(aq) is A-0.48 mol/L B) B-0.32 mol/L C)

129. ## geometry

A square pyramid has base edges 10 in. long and a height of 4 in. Sketch the pyramid and find its surface area. Round your answer to the nearest tenth

130. ## math

sharon is diving her green and blue rock collection into bags. Each bag will contain the same number of each color of rock. How many rocks of each color will be in each bag? there are 16 green marbles and 24 blue

131. ## chemistry

What is the chemical formula of the compound that forms between lithium (Li) and phosphorus (P)?

132. ## college percentages

One number exceeds another by 24. The sum of the numbers are 58. What are the numbers? please help!

133. ## Math

Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144

134. ## cis210

Assignment 1: Inventory Management Systems Due Week 2 and worth 100 points Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She

135. ## Calculus

Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that

136. ## Algebra

Quick question. The sum of two numbers is 48. One number is 3 times as large as the other. What are the numbers?

137. ## PHYSICS

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm.

138. ## Chemistry

What volume of a 0.332 M hydrobromic acid solution is required to neutralize 29.6 mL of a 0.155 M calcium hydroxide solution ?

139. ## physics

A bullet is ﬁred straight up from a gun with a muzzle velocity of 253 m/s. Neglecting air resistance, what will be its displacement after 2.9 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m

141. ## physics help i still dont get it

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

142. ## Chemistry

lime, Ca(OH)2 can be used to neutralize an acid spill.A 5.06-g sample of Ca(OH)reacts with excess of hydrochloric acid:6.74 g of calcium chloride is collected what is the percent yield of this experiment Ca(OH)2 + 2HCI ====> CaCl2 + 2H2O

143. ## Physics

A car traveling in a straight line has a velocity of 6.64 m/s at some instant. After 5.55s, its velocity is 10.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s

144. ## Punctuation

Select the correctly punctuated sentence. A) No, I do not agree with that diagnosis. B) No I do not agree with that diagnosis. C) No I do not agree, with that diagnosis. My answer is A

145. ## chemistry

How many grams of solid potassium hydroxide are needed to exactly neutralize 10.8 mL of a 1.25 M hydrobromic acid solution

146. ## science

A balloon with an initial volume of 2.8L at a temperature of 296K is warmed to 375K . What is its volume at the final temperature? (Assume constant pressure.)

147. ## Math

What is the volume in cubic feet, of a box that is 3ft long, 8th wide, and 16ft high?

148. ## lens surface

- a spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4 mm. What is the angle between the axis of the tool and the axis of the lens?

149. ## Physics

How much heat must be removed from 500 grams of water at 0 degrees C to form ice at 0 degrees c?

A biologist finds that 32% of fruit flies have short wings and 27% have eye defects. Assuming these two events are independent, what is the probability that a randomly selected fruit fly has neither short wings nor eye defects?

151. ## english2

Bee balm, coneflowers, and black-eyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together. is it correct

152. ## math

23 divided by 6=3.83333333333 the 23 is my points and i divide it to find my gpa how do i round the answer

153. ## Physics

A simple pendulum consists of a light rod of length L = 0.9 m anchored at a fixed point (like the ceiling), and a small mass m = 0.5 kg attached to the free end. The configuration is moved to an angle Î¸ = 39 degrees from the vertical and released from

16. Which of the following would be the best revision of these sentences? "Our present receivables are in line with last year's. However, they exceed the budget. The reason they exceed the budget is that our goal for receivable investment was very

155. ## Math

Complete the analogy. Monday : Tuesday :: Saturday : _

156. ## Chemistry

25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go

158. ## Abnormal Psychology

In comparison to children with autism, children with schizophrenia A. tend to be younger at diagnosis. B. show a more chronic and declining course. C. show similar social and language deficits. D. show less intellectual impairment. I think its C or D but

159. ## physics

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

160. ## science

you are sledding on a snow-covered hill at a speed of 6 m/s there is a drop that increases your speed to 12 m/s in 4 s. find your acceleration? i need help answer?

161. ## college math word problem

A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

162. ## Spanish Beg. 1 - help!

spanish words to talk about names so far I got... comom te llamas and me llamo is there a website that list all spanish words to talk about names I just need two more please help!

163. ## Accounting

I am given several hypothetical amounts and interest rates and need to find the amount of the rental payments. (Lessee-Lessor Entries; Sales-Type Lease) On January 1, 2011, Palmer Company leased equipment to Woods Corporation. The following information

164. ## math

1,405ft 1 and 3/4in.cut into 1/2 in.thick slices.how many slices are there?

165. ## Chemistry

What is the ionic equation for hydrolysis reaction of NH4C2H2O2 ? Thanks.

166. ## physics

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball

167. ## physics

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

168. ## Can comeone check my answer for me. Many Thanks!

A set of data is normally distributed with a mean of 1000 and standard deviation of 100. · What would be the standard score for a score of 1100? · What percentage of scores is between 1000 and 1100? · What would be the percentile rank for a score of

169. ## physics

wile e coyote pushes a 1500n rock toward the edge of a cliff with the road runner below. he gives a rock acceleration of .8m/s. what is the net force of the rcok?

170. ## physics

wile e coyote pushes a 1500n rock toward the edge of a cliff with the road runner below. he gives a rock acceleration of .8m/s^2. what is the net force of the rcok?

171. ## collegemathwordproblem

One number exceeds another by 24. The sum of the numbers are 58. What are the numbers?

172. ## physics

When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

173. ## math word fu

A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

174. ## algebra

a barrel contains 163 gallons of water and is being drained at a constant rate of gallons per hour write an equation that models the number of gallons g after t hours

175. ## Physics

The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.015 kg, and its velocity is +726 m/s. Her

176. ## physics need help bad

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

177. ## chemistry

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 70. cm3. If the combustion of this mixture releases 885 J of energy, to what volume will the gases expand against a constant pressure of 645 torr if all the

178. ## Physics

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 92.5 kg. The mass of the rock is 0.310 kg. Initially the wagon is rolling forward at a

179. ## Math Calculus 2

At a certain instant an aircraft flying due east at 240 miles per hour passes directly over a car traveling due southeast at 60 miles per hour on a straight, level road. If the aircraft is flying at an altitude of .5mile, how fast is the distance between

180. ## physics

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

181. ## input/output tables

I have a blank table to fill in.It says divide m by 3 m÷3

182. ## Punctuation

Select the correctly punctuated sentence. A) Depression, often a genetic disorder, can be safely treated with medication. B) Depression, often a genetic disorder can be safely treated with medication. C) Depression often a genetic disorder can be safely

183. ## Discrete Math

A bag contains 4 red, 6 white and 9 green marbles. How many ways can 3 red, 2 white and 1 green marbles be selected? Do you used permutation or combination, give your reasoning.

184. ## physics

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball

3.4t+0.08=11

186. ## Poltics

Who is the President of The Department of Human Services for Wayne County in Michigan?

187. ## Word problem

A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

188. ## xeco/212

Wall Street Journal in which economists are quoted using positive and normative statements. o Provide one quote and its context for both a positive and normative statement. Explain your choices. o Evaluate the statement choices of your fellow students.

189. ## prealgebra

0.85km/s=m/min

190. ## Punctuation

Select the correctly punctuated sentence. A) Dr. Christiaan Barnard, who performed the first heart transplant, is a well-known cardiologist. B) Dr. Christiaan Barnard, who performed the first heart transplant. Is a well-known cardiologist. C) Dr.

191. ## Punctuation and period

The most commonly used mark of punctuation is the _____ A) comma B) period I answered B

192. ## Physics

A 42.4-kg boy, riding a 2.29-kg skateboard at a velocity of +5.37 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.30 m/s, 9.09° above the

193. ## chemistry

how many moles of NaBr are produced from reacting 20.05 moles of AuBr3 with excess NaCN? AuBr3 +NaCN -> Au(CN)3 + NaBr

194. ## physics

A 16.0 g bullet is fired horizontally into a 87 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 168 N/m. The bullet becomes embedded in the block. The bullet block system

195. ## Physics

The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D? No one has answered

196. ## phys!!! how do you do this

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

197. ## Math

Sare estimated 32x45 by using 30x40. How could Sara make a more accurate estimate?

198. ## Math

Use mathematical induction to prove that 2^(3n) - 3^n is divisible by 5 for all positive integers. ThankS!

199. ## physics

How many significant figures are in 24.010

200. ## chemistry

onic compounds have names that... (choose all that apply) might contain Roman numerals. might start with ammonium. start with the name of an anion. have prefixes, like di or penta. start with the name of a nonmetal.

201. ## physics

John runs at 4.6 m/s for 7.53 s along the x axis. How far does John run? Answer in units of m

202. ## Grammar

Select the correctly punctuated sentence. A) The implant was ruptured, it was removed, the capsule was irrigated. B) The implant was ruptured it was removed, the capsule was irrigated. C) The implant was ruptured, it was removed the capsule was irrigated.

203. ## chemistry

Is this equation correctly balanced? If not why. Al2S3+H2O----> Al2S3+3H2O---->Al2(SO)3+3H2

204. ## Word problem

A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

205. ## MATHS

how much money would you have after 20 weeks if you were given 5c the first week, 10c the second, 20c the third, 40c the fourth, and so on?

206. ## physics

a wagon is pulled at a constant speed at an angle of 46 dregress with a force of 100N. ehat is the force of friction between the wagon and the ground ?

207. ## language

what does scv, s, f, and scs mean when identifying sentences?

208. ## Physics

Which doesn't describe motion? mass or position eg. The position of a golf ball standing still on a tee at 7:30 A.M. Sunday morning. or The mass of Voyager as it plunges into a black hole.

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

210. ## Physics

A railroad car with a mass of 1.86 104 kg moving at 2.80 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.40 m/s. (a) What is the speed of the three joined

211. ## collegemathwordproblem

When 80% of a number is added to the number, the result is 252. How do I find the number?

212. ## Word problem

One number exceeds another by 24. The sum of the numbers are 58. What are the numbers?

216. ## chemistry

each element Na, Mg, Al, Si, P, S has a very big jump in ionization energies. Please explain what causes these jumps in energy?

217. ## Sci 207 wk 2 lab 2

Which species appear to benefit from increasing fragmentation? Which species are negatively impacted? Based on your knowledge of environmental science, what could explain these observations? Support your answer with specific results from your data and

218. ## math

if you have a 6 foot long board and it's cut into 4/5 pieces how many pieces can you have a what portion of the board is left over

219. ## physics

A 59.0-kg skater is traveling due east at a speed of 1.80 m/s. A 61.0-kg skater is moving due south at a speed of 6.20 m/s. They collide and hold on to each other after the collision, managing to move off at an angle south of east, with a speed of vf. Find

220. ## Math

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0

221. ## Calculus

The population (in thousands) of the Tzitzit bird is well described by a function of the form P(t) = ae^kt, where t is the time in years and a and k are constants. If the population was 10 thousand when t-0 and 300 thousand when t=3, determine the

222. ## accounting

Okay so I need help Identifying the reporting issues in this case with references to the conceptual framework pyramid, such as revenue recognition, full disclosure, historical cost, etc. So this gym offers one year memberships. Members can use any of the

223. ## chemistry

What is the final temperature of water when 2.70 grams of calcium chloride is dissolved in 25 mls of water at 25.5 Celcius.

224. ## Math

Monday, Mr. C stacked a display case of 80 heads of lettuce. By end of day, some were sold. Tuesday Mr. C counted lettuce left and decided to add an equal number of lettuce (**hint - he doubled the leftovers). At end of Tuesday, he sold the same number as

225. ## Punctuation

Select the two (2) correctly punctuated sentences. A) I also explained antepartum fetal surveillance, i.e., fetal heart rate monitoring and assessment of amniotic fluid volume. B) I also explained antepartum fetal surveillance, i.e. fetal heart rate

226. ## chemistry

how many moles of NaBr are produced from reacting 20.05 moles of AuBr3 with excess NaCN? AuBr3 +NaCN -> Au(CN)3 + NaBr

227. ## calculus

What is the degree 5 coefficient of the polynomial p(x)= x^2 (x+1) (x+3x^3 + 4x^4)?

228. ## Punctuation

Select the correctly punctuated letter closing. A) Very sincerely yours, Joseph Blow, President B) Very sincerely yours, Joseph Blow President C) Very sincerely yours Joseph Blow, President I answered A

229. ## Physics

How many calories will take to convert 5 grams of 90C degree water to 0 C degree?

230. ## Punctuation

Select the correctly punctuated sentence. A) He arrived at the hospital with a heavily, bleeding gunshot wound. B) He arrived at the hospital with a heavily bleeding, gunshot wound. C) He arrived at the hospital with a heavily bleeding gunshot wound. I

231. ## CALC 251

Suppose that f(x)= (e^x)/(x^2+16. Find f'(0).

232. ## math

I need a set of 12 numbers that have maximum 8, range 6, mode 6, and median 5. Any answers?

233. ## Chemistry

What is the molar concentration of nitrate ions in a 0.161M magnesium nitrate(aq) solution?

234. ## Pre-Cal

State the transformations. Identify holes, vertical asymptotes, and horizontal asymptotes of each. (I'm fine with the asymptotes, just need help with stating the trandformations) f(x)= (3x+9)/(x+2)

235. ## Writing

I have to do a research paper & I want my topic to be on Pixar's influences on the world. My thesis: Pixar is a positive influence on the world. My supporting evidences - 1) Has helped the animation industry 2) Has helped the film industry 3) Has inspired

236. ## physics

A driver of a car traveling at 14.5 m/s applies the brakes, causing a uniform deceleration of 1.7 m/s 2 . How long does it take the car to accelerate to a ﬁnal speed of 9.50 m/s? Answer in units of s

237. ## Social Studies

List the unique circumstances of the interwar period that may have led to ultranationalism.

238. ## math

Is this the right answer? 42+x-3(x-2)+11 42+8-3(8-2)+11 47×6+11 282+11 293

a particle moves in a straight line such that its position x from a fixed point 0 at time 't' is given by x= 5 + 8sin2t + 6cos2t 1. Find the period and amplitude of the particle. 2. Find the greatest speed of the particle. Could you please explain the

240. ## Finite Math

A fair coin is flipped. If the flip results in a head, then a marble is selected from an urn containing 1 red, 4 white, and 9 blue marbles. If the flip results in a tail then a marble is selected from an urn containing 3 red and 3 white marbles. If the

241. ## science

These are the 3 questions that will help me study for my test. i need help understanding each of these thankyou :) Distinguish between microevolution and macroevolution. Explain how forest organisms (producers and consumers) separated by a highway could

242. ## Calculus

Im finding local Min and max of x^2/x-2 I know I take the derivative of the first one but how do i derive this one. And the second one especially don't know how to do.

243. ## Punctuation

Select the correctly punctuated sentence. A) It was an exhausting complicated surgery. B) It was an exhausting, complicated surgery. C) It was an exhausting, complicated surgery My answer is B

244. ## physical science

how much heat is absorbed by contacting 10 grams of 100 degree C steam by a students hand.

245. ## Punctuation

_____ are primarily used to separate sentences. A) commas B) periods My answer is B

246. ## Physics

A massless string connects three blocks as shown below. A force of 24 N acts on the system. What is the acceleration of the blocks and the tension in the rope attached to the 2 kg block?

247. ## Chemistry

how many grams of hydrogen occupy 40 ml at 300.15 K and 710 torr?

254. ## math

Find the second derivative. f(x)=(2x^2+4)^7/2

255. ## Social Studies

What national interests lead to ultranationalism?

256. ## english-dr.faustus

the warning Dr.Faustus teaches is? A-the devil is evil B-do not wish for more than heavenly power permits C-the end will justify the means D-both A and C

257. ## Calc

Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0

258. ## Precalc

#1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: 1, -1, and 4/3 x asymtope: x= 0 and +- square root of 5 y asym: y=3 If it crosses horiz asym: idk i need help on this #2. (x^4-7x^2+12)/(x^2-5x+4) x-int: -2, 2, and +- square root of 3 y-int: 3

259. ## Calculus 1

Find the derivative of y with respect to x. y=(x^6/6)(lnx)-(x^6/36) So far this is what I've gotten: y=(x^6/6)(lnx)-(x^6/36) y=(1/6)x^6(lnx)-(1/36)x^6 y'=(1/6)x^5(1/x)+lnx(x^5)-(1/6)x^5 What do I do now?

260. ## MATH

HELP? Exam in 20 mins -dont' have any idea how to do this question; please helpp.. anyone! PLEAZE A.S.A.P. minimize p= 15x +18y subject to x+2y= 36 x>=0 y>=0

261. ## math

Can these functions be defined for all real numbers? y= e^cos(x) y= ln(sin(x)) y= sqr(cos(x)+2) I'm trying to find some systematic way to test these, but I'm not sure how I can proe it for any possible input.

262. ## physics help

Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

263. ## Chemistry Lab

Does the pressure exerted by a gas depend on its molar mass?

264. ## Physics

Three objects with masses m1 = 7.4 kg, m2 = 11 kg, and m3 = 18 kg, respectively, are attached by strings over frictionless pulleys (M1 hangs off the left side of the table and M3 hangs off the right side of the table with M2 between them on the table). The

265. ## Calculus

simplify log2(4x^2 2^x)

266. ## Calculus (math)

Write a formula for f^-1 (x) if f(x) = (x+5)/(3x-4) and state the domain of f-1

267. ## Math

Eliminate the parameter in the pair of parametric equations to find the corresponding rectangular question. x=h+ asecQ y=k+ tanQ

268. ## math

For the functions f(x)=3x-12 and g(x)=(x/3)+4, find each of the following a) f o g (x) b) g o f (x)

269. ## English

Hi i need help with an example of a Nominative Absolute sentences using an example from Emily Bronte's wuthering heights

270. ## Physics

A 59.1 N/m spring is unstretched next to the 90 degree angle of an incline, and the system is released from rest. The mass of the block on the incline is m1 = 21.4 kg. (Neglect the mass of the pulley). If the coefficient of kinetic friction between m1 (the

271. ## College math

What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h

272. ## English

I have to come up a reason for my claim help please? Thanks! My claim: technology is harmful to children and teens.

273. ## calculus

Find the equation of the tangent line to the graph of the function f(x)=x-3/3x-5 at x=1

33x650x-43

275. ## math

which measures is closest to 59mm? A 50mm B 65mm C 6mm D 6cm

276. ## Chemistry

I titrated 0.25 grams of soda ash with 43.7 mL of HCl (0.115M) and 25 mL of H2O. I am getting over 100% sodium carbonate in my answer here are my steps that I took to get the answer can somebody help me see what I did wrong? mols HCl=(0.115M)x

277. ## mathe

aufgabe 1.rechne für die folgenden massstäbe aus,welche Länge fünf zentimeter auf der wirklichkeit haben. massstab 1--1000000-- massstab 1--40000000,massstab1--50000--massstab--10000-- massstab 1--500000

278. ## math

which length is between 7m and 9m A 80 cm

279. ## Health 8

what happen to a person tolerance as they drink regularly?

280. ## CALC 251

Let f(x)= [5x^(1/4)]*(x^3-8) Evaluate at f'(x).

281. ## Calculus

Find the limits if they exist lim_x->0 x/|x| lim_x->0+ sqr(x+4)

282. ## calculus

Find the limits lim_x->2 x^3+x lim_x->2 (x^2-4)/(x-2)

283. ## science

Is a mineral a crystal?

284. ## chem

a new compound composed of just Hex-Nuts and bolts is formed.A 13.7 Kg sample of the new compound is separated into its component elements with the following result 3.84 kg. of hex-nuts and 9.90 kg of bolts. 1. How many hex-nuts are present in the 13.7 kg

285. ## need help

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

286. ## Math

How do you find the percentage of a number? I have no clue how you do that. An example I have is 850 students are attending a camp, 38% of them play musical instruments. What number of people play instruments? I don't get how to solve that and here's

287. ## maths

BEGGING FOR HELP!!! EXAM IN 20 MINS LOST ON HOW TO DO THIS Q. Company has \$ 20 million dollars for two types insurance. Insurance A-homeowners have a 10% annual return. Insurance B-Auto has a 12% annual return. The total amount of Homeowners Loans should

288. ## Finite Math

A polygraph machine correctly identifies a lie 81% of the time, and incorrectly identifies a true statement as a lie 8% of the time. If a person being examined with the machine lies 10% of the time, what is the probability that a statement identified by

289. ## Physics

How many significant figures are in 1.30470

290. ## Grammar

The plan was to quickly attack England and afterwards Turkey. Is the sentence correct?

291. ## math

a disk has an area of 250 square inches.what is theradius of the disk?

292. ## MATH

Given Pr(a)= 0.9, Pr(C|A)= 0.78 and Pr(D|B) = 0.38. find a. (A|C) = b. (A|D) = c. (B|C) = d. (B|D) =

293. ## Computers

How can computers affect our health?

294. ## calculus

Left f(x) = 1/x+2 and g(x) = x-1/x. Simplify as much as possible and sstate the domain. f 0 g(x) g 0 f(x)

295. ## math

if there are 7 boxes of items and the least amount of items in any one of the boxes is 2 and the greatest amount in any one of the boxes is 4. What are all the possible total amounts of items in the 7 boxes combined?

296. ## math/algebra

How do I find the quotient of 5/22 & 6/11?

What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h

298. ## math

height of a stack of 30 sheets of paper A 2mm B 2m

299. ## math

which length is between 7m and 9m A 80 cm B 8km C 74cm D 740cm

300. ## Algebra 2

To rationalize the denominator of 4/(2+√8), Brittany multiplied by (2-√8)/(2-√8) and Justin multiplied by (1-√2)/(1-√2). Explain why both are correct.

301. ## Physics

How many calories it take to elevate the temperature of 10 gr of water-from 26C to 50C?

302. ## Math

Solve using Augmented Matrix Methods -4(x1) + 6(x2) = -8 6(x1) - 9(x2) = 12

303. ## calculus

Find the derivative of (x^2)(e^-3x)

304. ## English

I need a paragraph of 50sentences?

305. ## Social Studies

Which underlying circumstances occurring during the interwar period of 1919 to 1939 may have influenced whether or not nationalist interest was nationalist or ultranationalist?

306. ## Social Studies 8 - help!

What kind of business(es) did Vanderbilt control (location, dates number of employees, etc.)?

307. ## math

5n+2 divided by 6 n is -4 5×-4+2÷6 -20+2÷6 -19÷6

308. ## Maths

Question: I graphed -2x+y=-6 Y=-(1/3)x+1 & w/ the options No Solution, Infinante Solutions, or ( , ) I found the answer is (3,1) am I correct? What would be a better way to double check my answers?

309. ## algabra

why are prime numbers beter when writing codes?

310. ## math

(3x+1)^3/(3x+1)^3 +1 use the chain rule to complete the derivative

311. ## Calc

Set the first derivative and second derivative of x^2/x-2 equal to 0. Solve for 0.

312. ## Biology (cell-molec)

You wish to perform a restriction digest in a 20uL volume. Your DNA is 0.20 ug/uL and you wish to digest 1.0 ug. Your restriction enzyme is provided as 0.2 U/uL. Fill in the appropriate volumes: H2O, 10Xbuffer, DNA, and restriction enzyme. Please show

313. ## math

Angelique has five more than 3times the number of movies passes that she had last week. Let x represent the number of movie passes that she had last week. X(5x3)=15x

314. ## Punctuation

Select the correctly punctuated sentence. A) His greatest fears were a stroke, a heart attack, and blindness. B) His greatest fears were a stroke a heart attack and blindness. C) His greatest fears were a stroke, a heart attack, and blindness I answered A

315. ## math

if f(x)=3/x+x^3 and g(x)=1-x^2 find d/dx f(g(x)).

316. ## social studies

what is venezuela's human development index

317. ## social studies

what challenges face venezuela today

318. ## math

distance for a 1-hour bike ride A 800m B 8km

319. ## history

what are some of the natural resources found at the grand canyon

320. ## math

How can i get on xtramath

321. ## College chemistry

When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?

322. ## math

write two equations that prove the associative property is not true for division

323. ## south piedmont

convert to a mixed number 89/6

324. ## Math

Estimate the sum by rounding: 7.68+3.52

325. ## College chemistry

When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?

326. ## Health 8 (2nd question)

Describe the effects of alcohol Answer - There were 283 deaths recorded as alcohol-related and could cause blackouts, memory loss and anxiety. Am I correct and is my answer is good????

327. ## math

what is the prime factorization of 1 bilion using exponents?

328. ## math

if there are 7 boxes of items and the least amount of items in any one of the boxes is 2 and the greatest amount in any one of the boxes is 4. What are all the possible total amounts of items in the 7 boxes combined?

329. ## Social Studies 8 - help!!!!! (2nd question)

What organizations or buildings named after cornelius vanderbilt? So far I only got Vanderbily University is there anything else????? I google it and that's all it gave me please help me!!!!!

330. ## Science 207

As we reach a possible peak in oil production, what alternatives are forming? Consider the role of OPEC, perhaps in reorganizing and monitoring oil production. What do you think is the most viable way to address after effects of this possible peak?

331. ## math

3a+2-5a=-14 combine like terms right?

332. ## voltage drop

12v r1=10 r2=15 r3=2 r3=18 how would one solve this

333. ## mathURGENT!!!!

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. what is the answer and can u explain how u got it step by step? please...

334. ## english

they spent a year in france is an example of how fitzgerald

335. ## Math

2x-1/3 +3 or=6

336. ## math

4(3) exponent is 2

337. ## Math

2(2+7)+(6x-5)=37

338. ## math

what is 37% of 100

339. ## science

at what age does brain stops developing

340. ## math

Suppose f is a linear function such that f(1) = -1 and f(3)=2. Then f(4)=?

341. ## math

find the first derivative y= 2/5square root2x+1

7(s-5)=42

343. ## math

42+×-3(×-2)+11 × IS 8

-4b-5+2b=10

345. ## math

(-7)(-4)(-2)=-56

346. ## vocabulary

very few starting pitchers have the to pich well for nine innings.

23×17

348. ## Math

2(2+7)+(6x-5)=37

349. ## Math

2(2x+7)+(3x-5)=37

350. ## Grammar

She is fascinated to monkeys. Or She is fascinated by monkeys? Which do I use? To or By?

351. ## math

5n+2÷6 N is -4 5×-4=20+2=22÷6 3 4/6

1.48=w+x/10