# Questions Asked onSeptember 22, 2015

1. ## Algebra

If 18g of a radioactive substance are present initially and 8 yr later only 9 g remain, how much of the substance will be present after 20 yr?

2. ## maths

haby is four times as old as kenneth and haby is 36 years older than kenneth . how old is haby.

3. ## Physics

A hose lying on the ground shoots a stream of water upward at an angle of 60deg. To the horizontal with a velocity of 16m/s . The height at which the water strikes the wall 8m away is?

4. ## Chemistry

The number of calories needed to raise the temperature of 32 g of water from 12 Celsius and 54 Celsius is _____.

5. ## WRITING

A trip to the ocean can be a relaxing escape from the everyday pressures of life. A sailboat glistening on the horizon provides a mental escape to faraway places. The rhythm of the ocean beating against the sand is sedating music to a troubled mind. A

6. ## Algebra

Is(0,3) a solution to the equation y=x+3 A. Yes B. No*** Is (1,4) a solution to the equation y= -2x A. Yes*** B. No Look at the following points (4,0) (3,1) (6,3) (2,-4) Which are the solutions to y= x-4? Choose all the correct answers A.(6,3) B.(4,0)***

7. ## algebra

An “A” is considered 4.0, a “B” is 3.0, a “C” is 2.0, a “D” is 1.0, and an “F” is 0. In your first semester you received the following grades. Calculate your grade point average English = credits 3.0 Grade = C Biology = credits 4.0

8. ## Algebra

Write and solve an equation to find how much warmer Montana's average 3 month temperature is than Minnesotas. Montana weather is -0.7 degrees celsius and Minnesota is -2.5 degrees celsius

9. ## AP chemistry

A certain complex of metal M is formulated as MCl3 ∙ 3 H2O . The coordination number of the complex is not known but is expected to be 4 or 6. (a) Would conductivity measurements provide information about the coordination number? (b) In using

10. ## SS

A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored

11. ## Math

8 students share 5 square pieces of cake equally. Draw to show how much each person gets.

12. ## Gr 12 chemistry

Given the equation: 6C6H12O6+O2= 6CO2+ 6H2O How many moles of carbon dioxide will be formed upon the complete reaction of 24.1 grams of glucose with excess oxygen gas

13. ## Physics

The tortoise and the hare are in a race of 1000m distance. The tortoise travels the entire race at a speed of 2.0 m/s while the rabbit runs the first 200 m @ 2.0 m/s. Then he stops to take nap for 1.3 hrs and awakens to finish the last 800m with an average

14. ## Chemistry

for each of the following acid-base reactions calculate the mass (in grams) of each acid necessary to completely react with and neutralize 4.85g of the base solution 1)2HNO3(aq)+ Ca(OH)2 (aq)> 2h20(l)+ Ca(NO3)2 2) H2SO4(aq)+ 2KOH(aq)---> 2H2O(l)+ K2SO4

15. ## English

Which of the following vocabulary words ends in a suffix that indicates it is an adjective? imminent*** doggedness infallibility

m

17. ## Calculus

What does it mean when the limit of f(c) doesn't exist?

18. ## probability

The state of Ohio has several statewide lottery options. One is the Pick 3 game in which you pick one of the 1000 three-digit numbers between 000 and 999. The lottery selects a three-digit number at random. With a bet of \$1, you win \$500 if your number is

19. ## chemistry/engineering

Wet sugar, containing one-fifth water by mass is conveyed through an evaporator in which 85.0% of the entering water is vaporized. Taking a Basis of 100 kg of feed to the evaporator A barrel of oil contains about 6 million Btu and about 1000 Btu is needed

20. ## stats

A box contains 16 white and 16 black marbles. Construct a sample space for the experiment of randomly drawing out, with replacement, three marbles in succession and noting the color each time. (To draw “with replacement” means that each marble is put

21. ## Science

A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored

22. ## Algebra

K2 is11,194 feet higher than Mt. Kenya. Write and solve an equation of Mt. Kenya. Please hep with this 9ne thanks

A football team has a net yardage of -26 1/3 yards of a series of plays. The team needs to get yardage of 10 yards to get a first down. How many yards do they have to get on their next play to get a first down?

24. ## Algebra

A diver begins at sea level and descends vertically at a rate of 2 1/2 feet per second. How long does the Diver take to reach -15.6 feet?

25. ## Economics

Assume that the manufacturing of plastic (PVC) windows is a perfectly competitive industry. The market demand for plastic windows is described by a linear demand function: Q = (6000 -50P)/9. There are 50 manufacturers of plastic windows. Each manufacturer

26. ## Math

Bridget ungrouped 5,000 as shown. 5,000-2896=. Use your understanding of place value to explain how the ungrouped number is equal to 5,000.

27. ## PHYSICS

1.)what is the magnitude of the force experienced by a proton moving at 3 km/s inside magnetic field of strength 0.05T 2.)an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the

What is the prefix root and suffix for daintly? Am i correct? Prefix- none Suffix-ily Root- daint

29. ## Math

Will a 2-quart pitcher hold an entire recipe citrus punch -recipe- 2cups orange juice 2cups grapefruit juice 1/4 cup of apricot neater 1/3cup of pineapple juice 4cups ginger ale is the whole recipe 8 2/14 cups?

30. ## Programming

The Romance World Cruise Line provides special gifts for passengers who are newlyweds, as well as for those who have been married more than 40 years. Design a pseudocode for a program that accepts a couple's last name, ship cabin number, and number of

31. ## Geometry

How to put each circle in standard form? 1. Center of the line 5x-3y=12 and tangent to both axes.(first quadrant circle only). 2.passes through (-3,22) and tangent to the y axis at (0,19) 3.diameter ab with a (4,10) and b (8,14) 4. Center (6,10) tangent to

What is the prefix, suffix and root for the word pitch? Am i correct? No prefix No suffix Root- pitch

What is the prefix suffix and root for the word devastation? Am i correct? Prefix- none Suffix- ion Root- devastate

34. ## math

list all the 3 digit numbers that fit these clues. the hundreds digits is less than 3. the tens digit is less than 2. the ones digit is greater than 7

35. ## Maths

A ladder of a length of 6m is placed against a wall. The distance from the foot of the ladder to the wall is 2.5m. How far up the wall is the ladder?

36. ## Algebra

1.What is the sum of 5/6 + 2/3? (1 point) MY ANSWER C. a.1 1/3 b.1 1/2 c.1 2/3 d.1 3/4 2.Sue needs 2 1/3 cups of flour for a batch of cookies.How many complete batches can she make with 10 cups of flour? (1 point) MY ANSWER D. a.5 batches b.3 batches c.2

37. ## PHYSICS

1.)what is the magnitude of the force experienced by a proton moving at 3 km/s inside magnetic field of strength 0.05T 2.)an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the

38. ## Pre Algrebra

Which expression has the same value as m^-4+1/5^-4 a)1/m*1/m*1/m*1/m+5*5*5*5 b)m-4+1/5-4 c)1/m*1/m*1/m*1/m+4*4*4*4*4 d)1/m*1/m*1/m*1/m+1/5*1/5*1/5*1/5

39. ## Physics

A 6.08 kg box sits on a ramp that is inclined at 37.4 ∘ above the horizontal. The coefficient of kinetic friction between the box and the ramp is 0.30. What horizontal force is required to move the box up the incline with a constant acceleration of 4.30

40. ## Math

There are three times as many chickens than pigs on a farm. All the chickens and pigs have 2400 feet all together. How many more chickens than pigsare there?

41. ## Calculus

How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC

42. ## HISTORY!!

Okay so this is the question: 2. There were many empires that rose and fell between 2300 B.C. and 334 B.C. Write a brief essay that compares and contrasts the Babylonian and Hittite empires. In what ways were they alike, and how were they different? I'm

43. ## unisa

Describe two improvements that the people of Ikror have enjoyed from the state assembly and mention two aspects that still need improvements

44. ## Life orientation

lo task on the topic road use-the rrsponsibilities of the road users to ensure safety for one another

45. ## Math

Determine the limit below (if it exists) Problem: lim 8x^2+40x+32/x+4 x→-4

46. ## life orientation

Assess the extent to which bad road use has a direct impact on the physical,emotional,social and economic aspects to the family,the community and the country.

47. ## Science Can You Please Check

1. DNA is found in ____ cells. sex sperm all* no 2. A ____ is part of the DNA code on a chromosome. gene* genotype phenotype gender 3. ____ is defined as either male or female except for rare species that have the ability to change sex. Competition

48. ## math

The tenths digit of ds decimal is the smallest prime n.The hundredths digits is twice the tenths digit is the GCF 18 and 27.

49. ## AP Environmental Science

Why is it necessary to eliminate absolutely all invasive fire ant colonies to eradicate the invasive population? A)Every colony has a major impact on native flora and fauna. B)Because the last colony found is the one housing the invasion’s queen. C)Even

50. ## Physics

1.)what is the magnitude of the force experienced by a proton moving at 3 km/s inside magnetic field of strength 0.05T 2.)an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the

51. ## Math

A 3-pound pork loin can be cut into 10 pork chops of equal weight. How many ounces is each pork chop. Is my math correct? 3lb=48oz so 48/10=4.8 so is each pork chop, 4.8 os or do i have to divide 8 by 10?

52. ## math

combine the following polynomials (2x^2-5x+9)-(0.5x^2-7x+3) (-3x^3-6x-4)+(2x^3+4x^2+()-(4x+3)

53. ## Chemistry

What happens when you mix ammonium chloride and sodium nitrate? I don't need any equations, just what would you see when you mix them together Thanks~

54. ## Calculus 3! ASAP please

1.A given line is described by the system of equations x=2t+7; y=-3t+4; z=5-t; find the equation of a line parallel to the given line and which contains the point (1,1,0). 2.Let a= and b=, then the component of a parallel to b is given by? - the answer is

55. ## Calculus 3

1. An object moves along a straight track from the point (1,−2,1) to the point (0,−7,5). The only force acting on it is a constant F=2i−3j−5k newtons. Find the work done if the distance is measured in meters. 2. A wrench 0.5 meters long lies along

56. ## U.S. History

How did the issue of Kansas statehood reflect the growing division between North and South?

57. ## L.A

Which of the following expresses a main idea from Always to Remember? a.Maya Ying Lin was a talented and smart college student who became a designer. b.Maya Ying Lins family life, travel experiences, and education provided her a background necessary for a

58. ## Math

If a piece of string is 3/4 meter long then how many pieces of string that are 1/20 meter long can Wyatt cut?

What is the prefix, suffix, root for the word constructed? Am i correct? prefix-none Suffix-ed Root-construct

60. ## Precalc

Identify all of the trig functions that fit each description: 1. Has a amplitude of 1 2. Is discontinuous at odd multiples of π/2 3. Is continuous at odd multiples of π/2 4. Has sin x as a denominator value 5. Is completely bounded 6. Has the exxact same

What is the prefix, suffix, and root for the word veins? Prefix-none Suffix-s Root- vein Am i correct?

62. ## math

y-x=1 2x-y=1 changing it to y y=-x+1 y=2x-1 can someone check if I did it right? If not, please correct me.

63. ## precalculus

the following is a point not on a unit circle. θ → (-5,4) use it to find: 1. cos θ = -5 2. csc θ = 1/4 am i correct? also, sec θ is negative, tan θ is positive. in what quadrant is < θ?

64. ## algebra

Factor the following expressions x^2-8x+12 3a^3-27a 4y^2-9

65. ## science

Help me please looked everywhere T- the skeletal system consists of 206 bones H- helps protects the body E- S-support K- E- L-ligaments E- T-tendons A- L- S-skeleton Y- S-shape and structure T- E-exercise M-

What is the prefix suffix and root for the word lullaby? Am i correct? Prefix-none Suffix-by Root- lulla

67. ## math

a football coach divides 42 players into equal groups for a warm up drill.each group should have at least 5 players but no more than 8 players.what are the possible group sizes?

68. ## Math

A stick 60 cm long is cut into two pieces in yhe ration 2:3 how long is each P.s I need it on September 23 4:00 am plssssssss thank you

69. ## algebra

Julie the Jeweler has fifteen gold necklaces worth \$120 each, nine silver necklaces valued at \$90 each, ten plated necklaces valued at \$60 each and thirty beaded necklaces worth \$15 each. What is the average value of a necklace at Julie’s shop? (round to

70. ## algebra

What is the final grade for this student? (round to two decimal places) Quizzes = 5%, Exam 1 = 20%, Exam 2 = 20%, Lab Reports = 15%, Research Paper = 15%, Final Exam = 25% Lab Reports: 75,80,70,75,85,69,90,75 Quizzes: 85,60,70,0,75,80,80,80 Exam 1: 80 Exam

71. ## Math

1.)what is the magnitude of the force experienced by a proton moving at 3 km/s inside magnetic field of strength 0.05T 2.)an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the

72. ## Math

The number of locks is 9 in the ones place the number in the hundreds place is one more than the number in the tens place those two numbers equal 11 how many blocks are there

73. ## History

Can someone help me answer these questions? Please help me... I really can't figure out these ones. 1) The Puritans came to America seeking religious freedom England. They established colonies around the church. Give one example of how they sought to

74. ## maths

Use the digits 22468 find the number less than 70000 which has the same units and hundreds digit its thousands digit double its units digit

m

76. ## maths

Use the digits 22468 find the number less than 70000 which has the same units and hundreds digit its thousands digit double its units digit Is the number 46282

77. ## MATH/GEOMETRY

m

What is the prefix, suffix, and root for the word resourceful? Am i correct? No prefix Suffix- ful Root- resource

79. ## desert sands

Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved

80. ## Speech

Metaphor, simile, repetition, parallelism and alliteration. What fits each sentence: Many lessons need to be learned from Hurricane Katrina we are one nation but separated according to race and class we are one nation but separated according to advantaged

81. ## Math

Determine the limit below (if it exists) Problem: lim 8x^2+40x+32/x+4 x→-4 I got 0/0, is that right?

82. ## Trigonometry

find the value for the indicated trig function for ø, if ø is an angle in standard position with the terminal side defined by the given point. (18,24); find cos ø

83. ## Physics

Part A of this question asks for the sum of vector A = 3x+5y and vector B = 1x-3y. I did this and got the vector A + vector B = 4x+2y. Part B then asks what the magnitude and direction of vector A + vector B? The answer in the back of the textbook says

84. ## ELA

what is five thing you would like to cancel in the world? Ex: green beans cause I hate them!! What is five things you would want in the world!! Ex: brighter light nights.

85. ## Math

which statement is false?(1 point) a.every integer is a real number b.the number zero is a rational number c.every irrational number is real number d.every real number is a rational number

86. ## Physics

What are three different kinds of automatic switching devices? What are the conditions that cause the on/off action of the switch?

3x-8=23

88. ## social studies

Which of the following is most likely to help countries in West and Central Africa solve their economic problems? a. griots b. microcredit c. imports of natural resources d. negative balance of trade

89. ## science

Describe how you would find the mass of 250mL of water

90. ## Chemistry

How can the concept of changing oxidation states of manganese be used in the real world

91. ## Maths

What number am I? I am a multiple of 3 I am also a multiple of 7 My units digit is half my tens digit

m

93. ## Geometry

Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles are each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter.

94. ## Math

So, I need to state the properties of two equations that look like a(b-c)=d and c(b-a)=d. Is it associative property?

95. ## Physics

Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. (a) If it starts from rest, how long will it take to acquire a speed 12% that of light, which travels at

96. ## Algebra

There were 170 tickets sold in 1 day and amount money made \$1475.00. Adult tickets cost \$10.00 and children \$7.00. How many adult and children tickets were sold.

97. ## sabela

Discus three practical measures to deal with this environmental issue that causes I'll health on a personal level

98. ## Math

Please solve: t/2 + t/6 = 2.

99. ## physics

A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are µs = 0.4 and µk = 0.34, respectively. The acceleration of gravity is 9.8 m/s. What is the largest angle which the incline can have so that the mass

100. ## Science

A scientist was studying the effects of oil contamination on ocean seaweed. He thought that oil runoff from storm drains would keep seaweed from growing normally so he decided to do an experiment. He filled two tanks of equal size with water and monitored

101. ## Math

Solve m/3 + m/4 -1 = 5/2

102. ## science

What is the volume of a cardboard box that is 11 inches long, 3 inches wide, and 7 inches high.

103. ## Math

Geddy has a pool with a volume of 25.0m^3. It costs \$2.35 per cubic foot (ft^3) to clean. How much will it cost to clean the pool?

Which American officer assisted Frémont's attacks in northern California? A: John Drake Sloat assisted Frémont's attacks in northern California.

105. ## Social Studies

According to the declaration of independence, all men have the right to life, liberty, and the pursuit of happiness. Which document outlines specific freedoms guaranteed to United States citizens? A) Article 1 of the Constitution B) Article 2 of the

106. ## algebra

If a=2 what is -a^2? -4 or 4? Why?

107. ## Computer/Math

In an examination five pass grade and one fail is awarded a. For mark between 70 and 100 b. For mark between 60 and 69 c. For mark between 50 and 59 d. For mark between 45 and 49 e. For mark between 40 and 44. Write a program to input an mark for a student

108. ## Gr 12 chemistry

Based on this reaction: H2(g) + I2(g)= 2HI(g) How many moles of iodine are necessary for form 0.530 moles of hydrogen iodine

109. ## Algebra I

I got the following question but since I haven't reached a definite answer I'm wonder if I've solved it correctly: Write the slope-intercept form of an equation of the line that passes through (-2,5) and has an undefined slope. I got: 5=-2m+b 5--2m=b

110. ## physics

A speeder driving down the road at a constant 20m/s passes a patrolman parked on the roadside. The patrolman waits 3 seconds then pursue the speeder accelerating at a constant 4m/s2. When does the patrolman catch the speeder

111. ## U.S. History (Answer Check)

What act triggered violence in Kansas?

112. ## English

According to An Inconvenient Truth, what is the role of infrared radiation in global warming?

113. ## Chem

2.) convert 200.46 miles per hour to km/s 5.) convert 1.745 * 10^-5 m^3 to pints. 7.) convert 1.5 square miles to dm^2.

114. ## Math

After 40 spins, Chris landed on red 18 times. What is the experimental probability of landing on red? What is the theoretical probability of landing on red? Right as a fraction in simplest form.

115. ## Science

In the space below, write a paragraph describing the work of a chemical engineer. Include a description of the different industries that they work in and the skills they need to be successful Need Help!!!!

116. ## Mathematics (I really need help)

The place value of 4 in 36.54 is how many times the place value of the 4 in 24.81?

117. ## Physics

Basically... distance is 4 km Takes 4 min to go down river Takes 6 min to come up How fast is the river?

118. ## Physics (density)

A steel drum (barrel) has a volume of 200 Liters and a mass of 16 kg. It is filled to the top with an unknown liquid, sealed and thrown into water. It is floating with 50% of its volume underwater. What is the density of the liquid inside the drum? Assume

119. ## Physics(volume flow rate)

Imagine a house with two bathrooms/showers: one downstairs, the other upstairs. The volume flow rate of the shower head downstairs (2 meters above the ground level) is 4*10-4 m3/s. The cross sectional area of the shower head is 30 mm2. What is the volume

120. ## Chem (HELP!!)

Test tomorrow too! I don't understand how to do these at all! HELP PLEASE _______________________________ 3.) 11.45 L of milk spilled on the floor. How many gallons spilled? 6.) Suppose 19.0 quarts of water is consumed by a thirsty dessert traveler. How

121. ## Calculus

Can you please explain to me what are the qualifications for a function to be continuous? Please explain your response in easy to understand wording. thank you in advanced!

122. ## U.S. History (Ms. Sue)

Which side, the North or South, achieved more of its goals in the Compromise of 1850? A: The South achieved more of its goals in the Compromise of 1850.

123. ## Math

If Emma ran 2 1/5 miles and Lily ran one third the distance that in Moran how far in miles did Lily run ? Do you divide or multiply or what

124. ## Mathematics (I really need help)

The place value of 4 in 36.54 is how many times the place value of the 4 in 24.81?

125. ## math

In jims,5 times as many students take the bus as those who walk. A total of 24 students walk or take the bus. How many more students take the bus than walk to school?

126. ## Math

A group of friends went out for dinner. 19 of the diners ordered vegetarian food and 14 ordered non-vegetarian food. What is the ratio of the number of vegetarian meals to the number of non-vegetarian meals?

127. ## Physics

Two small cars same weight travel towards each other red going 2.13 seconds/meter and blue going 2.99 seconds/meter at how many meters will they collide if one starts at 0 meters and one starts at 3.5 meters.

128. ## Maths

Tiffany makes \$4000 a month plus some money by commission rates. She gets 4% of everything she sells. If Tiffany sold \$40000 worth of items this month, what is her salary for the month?

129. ## physics

A bullet is fired straight up from a gun with a muzzle velocity of 217 m/s. Neglecting air resistance, what will be its displacement after 9 s? The acceleration of gravity is 9.8 m/s2 .

130. ## Math

Hi! I need help with this question: Directions: Find the rest of the answers for the table and then find the estimate for it's limit. Problem: lim x→0 cos(3x-1)/3x Table: (top row) -0.1, -0,01, -0.001, 0.01, 0.1 (trying to find what the bottom would be

131. ## computer programming

Write a C++ pogram for the following Employee Name and 12 months’ salary. Salary starts with \$5000 per month and increments every month by 10% of previous month salary. At the end of the year, the employee is paid a 5% bonus on top of the yearly salary.

132. ## math

Paul needs 3 7/8 yards of fabric to make one table cloth. how many table clothes can he make from 38 3/4 yards of fabric?

133. ## math

5/2d-3/2=-1/2

134. ## Physics

A boy sledding down a hill accelerates at 2.33 m/s2 . If he started from rest, in what distance would he reach a speed of 8.70 m/s? Answer in units of m

135. ## English

What is an aspect of the tense?

136. ## Half-Life

The rate constant for this first-order reaction is 0.0990 s–1 at 400 °C. A --> products After how many seconds will 10.0% of the reactant remain?

137. ## Social Studies

How does a satellite help us?

138. ## AP Physics

A baseball player throwing the ball from the outfield usually allows it to take one bounce on the theory that the ball arrives sooner this way. Suppose that ball hits the ground at an angle θ and then bonuses but loses half of its speed. A. Assuming that

139. ## math

Find each quotient. Express using positive exponents: 7 to the 6th power over 7

140. ## physics

A bear spies some honey and takes off from rest, accelerating at a rate of 2.8 m/s^2. If the honey is 20m away, How fast will the bear be going when he gets to the honey?

141. ## MATH

The position function of a particle is given by s(t) = t^{3}-3t^{2}-7t, t\ge 0 where s is measured in meters and t in seconds. When does the particle reach a velocity of 20 m/s? PLEASE HELP. I found the derivative which is 3t^2-6t-7. Now do I set that

142. ## Math Help- Test Tomorrow!

We were doing review in class today and I remembered this one question I never got(though I don't have the specific question with me anymore). 1. It was a composite function question that asked for 'a' when f(g(a))=1. We were provided with the graphs of

143. ## physics

A giant bull running at 15 m/s slows at a rate of 2.4 meters per second per second. How long does it take it to stop?

144. ## Calculus

How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC Calculus - Steve, Tuesday, September 22, 2015 at 11:39pm AB+BC = AC so, AB+BC+CD = AD BC-DC = BC+CD = BD See if you can use that idea to rearrange +/- terms so the ends line up in order

145. ## Math

The radius of a sphere is 3 cm . the radius is increased by a linear scale factor of 5:2 . calculate the surface area of the new sphere

146. ## Math

1. Solve the Following equation: 3(x-7)-x=2x-21 a. 7 b. -2 c. infinitely many solutions d. no solution 2. Solve the Following equation: 4=2y=9+2y a. 4 b. -4 c. infinitely many solutions d. no solution Can someone walk me through how to do these please? I

147. ## math

Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her

148. ## Algebra

For the period 1995-2002, the total personal expenditures (in billions of dollars) in the United States for food, f(x), and for housing, h(x), can be described by the equations shown below, where x is the number of years past 1995. f(x) = 40.74x + 742.65

149. ## Math

At the grocery store, almonds are on sale for \$2.88 per pound. What is the price of 3.5 pounds?

150. ## algebra

Bacteria of species A and species B are kept in a single test tube, where they are fed two nutrients. Each day the test tube is supplied with 19,740 units of the first nutrient and 31,990 units of the second nutrient. Each bacterium of species A requires 4

151. ## Algebra

A nurse has two solutions that contain different concentrations of a certain medication. One is a 20% concentration and the other is a 5% concentration. How many cubic centimeters of each should he mix to obtain 10 cc of a 14% solution?

152. ## Algebra

Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 10% of the required nutrition per ounce, and substance C supplies 16% of the required nutrition per ounce. If digestive restrictions require that substances A

153. ## Chemistry

Lets say you have 25 ml of a 3.25M copper(II) chlorate solution. How many moles of copper (II) chlorate would be in the solution and how many moles of the copper(II) ion would be in the solution?

154. ## Calculus 1

Differentiate. f(x)=5sqrt(x)sinx

F= 9/5-62+32

156. ## Science Project suggestions??

I cannot think of an original science project idea. I would really like an original one instead of the online ones which have already have their own procedures and stuff. I would like to do a science project that is has to do with chemistry or computer

157. ## math

A printing company agreed to publish a book about Western history. When they were numbering the pages of the book, they noticed that they used 2989 digits. How many pages long was the book they agreed to publish?

158. ## our lady of fatima university Chemistry

What is the PH of the solution after 25.00 ml of 0.250 M KOH is added to 75.00 ml of 120 M Acetic acid?

159. ## math

Use parenthesis to make statement true 2x8+5-3=36

160. ## science

preparation of 600ppm sodium ions from sodium carbonate