# tim

Most popular questions and responses by tim-
## Science Check Answer

1. Which of the following is the correct definition of minerals? A) A naturally occurring, inorganic solid that has a crystal shape and definite chemical composition. B) A naturally occurring, inorganic solid that forms through crystallization of melted

*asked on May 2, 2016* -
## Calculus Help Please!!!

A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 40 cm/s. Find the rate at which the area within the circle is increasing after each of the following. after 1 s = after 3 s = after 7 s =

*asked on April 2, 2014* -
## Math

1) A plane is located at C on the diagram. There are two towers located at A and B. The distance between the towers is 7,600 feet, and the angles of elevation are given. a) find BC, the distance from Tower 2 to the plane, to the nearest foot. b) find CD,

*asked on April 11, 2016* -
## Math

Given: Triangle SVX is congruent to triangle UTX and Line SV is parallel to line TU. Prove: VUTS is a parallelogram. Statement : Reason. 1. Tri SVX is congruent to Tri UTX. Reason: Given. 2. Line SV is parallel to line TU. Reason: Given 3. Line SV is

*asked on February 17, 2016* -
## Science

1. What is the difference between a scientific theory and a scientific law? A) A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B) A scientific theory is based on a few experiments,

*asked on September 14, 2015* -
## Math

1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face

*asked on May 16, 2016* -
## Chemistry 2B - UC Davis

Now calculate Kb the base dissociation constant for [C2H3O2-], acetate anion, for each of your trials from the concentrations of species at the equivalence point. Report 3 significant figures, e.g. 5.97E-10.

*asked on May 11, 2012* -
## math

The radius r of a sphere is increasing at the uniform rate of 0.3 inches per second. At the instant when the surface area S becomes 100pi square inches, what is the rate of increase, in cubic inches per second, in the volume V?

*asked on December 29, 2011* -
## Math

1. What is the surface area of the pyramid shown to the nearest whole number? The diagram is not drawn to scale. The lengths are, 3ft as the base, 3ft as the width, and the height is going up at an angle on the outside face on the pyramid which is 8ft. A)

*asked on June 8, 2016* -
## Math

1. Name the intersection of plane ACG and plane BCG. A. AC B. BG C. CG D. The planes need not intersect. Is the answer C? this is hard for me since there isn't a picture. Thank you!

*asked on September 18, 2015* -
## Math

1. Write the converse of the following true conditional statement. if the converse is false, write a counterexample. If a < 10, then a < 15 a) if a > 10, the a > 15; false. Counterexample: a=12 and a

*asked on October 13, 2015* -
## Math

1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face

*asked on May 17, 2016* -
## Math

1. The two rectangles are similar. Which is the correct proportion for corresponding sides? the two rectangles are 4 by 12 and 8 by 24. thanks! A) 12/8=24/4 B) 8/4=24/12 C) 12/4=8/24 D) 4/12=24/8 Is the answer C? I'm not quite sure about it but that's what

*asked on March 14, 2016* -
## Math

1. In ABC, A is a right angle, and m B=45*. Side CA also has a length of 17ft just to let everyone know. What is the length of BC? If the answer is not an integer, leave it in simplest radical form. The diagram is not shown to scale. A) 54 ft B) 17 sqrt 3

*asked on June 7, 2016* -
## Math

1. Based on the given information, what can you conclude, and why? Given: m angle P= m angle T ; PR=TR. A) Triangle QRP is congruent to Triangle TRS by SAS. B) Triangle QRP is congruent to Triangle SRT by SSS. C) Triangle QRP is congruent to Triangle SRT

*asked on February 9, 2016* -
## Math

Given: Triangle SVX is congruent to triangle UTX and Line SV is parallel to line TU. Prove: VUTS is a parallelogram. Statement : Reason. 1. Tri SVX is congruent to Tri UTX. Reason: Given. 2. Line SV is parallel to line TU. Reason: Given 3. Line SV is

*asked on February 18, 2016* -
## Math

1. Which of the following best describes the altitude of a triangle? A) A segment perpendicular to a side of the triangle. B) A segment that passes through the midpoint and is perpendicular to a side of a triangle. C) A segment drawn from the vertex to the

*asked on February 1, 2016* -
## Math

1. The figure represents the overhead view of a deck surrounding a hot tub. What is the area of the deck? Round to the nearest tenth. *IF You search this question it is the first link that comes up that has the image. It just doesn't give me a clear

*asked on April 28, 2016* -
## Math

1. What is the name of the ray that is opposite of ray BA? Description of the ray. It's a straight line with the points A B C D all in a row. A) Ray BD B) Ray BA C) Ray CA D) Ray DA This doesn't make sense. I thought that CD would be opposite of BA. But

*asked on September 14, 2015* -
## Math

1. Plane hkp and plane rkp are two distinct planes. name the intersection of the plane hkp and plane rkp. A) Ray KP B) Ray HK C) Ray RP D) The planes need not intersect. Is the answer A? Please correct me if I am wrong. Thank you!

*asked on September 14, 2015* -
## Science

1. Which of the following is the correct definition of minerals? A) A naturally occurring, inorganic solid that has a crystal shape and definite chemical composition. B) A naturally occurring, inorganic solid that forms through crystallization of melted

*asked on May 2, 2016* -
## Math

Complete the 2 column proof. Given m

*asked on February 1, 2016* -
## Math

1. What is the volume of the oblique cone shown? Round the answer to the nearest tenth. The diagram is not drawn to scale. A) 178.0 in^3 B) 4,539.6 in^3 C) 2,269.8 in^3 D) 1,513.2 in^3 The bottom is 17 inches and the height is 20. Is D correct?

*asked on June 8, 2016* -
## Math

An airplane pilot over the Pacific sights an atoll at an angle of depression of 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters. What is the height of the plane to the nearest meter? 458 meters 454 meters 3,667

*asked on April 19, 2016* -
## Language Arts

Be still, sad heart! and cease repining; Behind the clouds is the sun still shinning; thy fate is the common fate of all, into each life some rain must fall some days must be dark and dreary 1. from the context, what do you conclude is the probable meaning

*asked on April 21, 2016* -
## Math

1. To find the height of a pole, a surveyor moves 120 feet away from the base of the pole and then, with a transit 8 feet tall, measure the angle of elevation to the top of the pole to be 36*. to the nearest foot, what is the height of the pole? A) 87

*asked on April 19, 2016* -
## Chemistry

1) A 0.1375-g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 3024 J/C. The temperature increases by 1.126 degrees C. Calculate the heat given off by the burning Mg, in kJ/g and kJ/mol. 2) Determine the

*asked on November 18, 2014* -
## Physics

A bob of mass = 0.250 is suspended from a fixed point with a massless string of length = 23.0 . You will investigate the motion in which the string traces a conical surface with half-angle = 25.0. What tangential speed must the bob have so that it moves in

*asked on September 30, 2010* -
## Math

1. A ferris wheel is drawn on a coordinate plane so that the first car is located at the point (30,0). what are the coordinates of the first car after a rotation of 270* about the origin. A) (30,0) B) (-30,0) C) (0,-30) D) (0,30) This doesn't make any

*asked on November 4, 2015* -
## Math

1. Determine whether the two figures are similar. If so, give the similarity ratio of the smaller figure to the larger figure. The figures are not drawn to scale. Figure One: (CYLINDER) Height is 9.9 and radius is 1.3 Figure Two: (CYLINDER) Height is 23.76

*asked on May 24, 2016* -
## Math

1. Two angles whose sides are opposite rays are called _____ angles. Two coplanar angles with a common side, a common vertex, and no common interior points are called ____ angles. A. Adjacent; vertical B. adjacent; complementary C. vertical; adjacent D.

*asked on September 18, 2015* -
## Math

1. What is the surface area of the cylinder in terms of pi? The diagram is not drawn to scale. A) 990 pi in^2 B) 342 pi in^2 C) 378 pi in^2 D) 504 pi in^2 The radius is 9 and the height is 19. when I solve this, no matter what the formula is, I always get

*asked on June 8, 2016* -
## Calculus

Water leaks from a tank at the rate of r(t) gallons per hour. The rate decreased as time passed, and values of the rate at two-hour time intervals are shown in the table below. The total amount of water that leaked out is evaluated by a Riemann sum. Find

*asked on April 8, 2018* -
## Math

School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional? 2)Find your distance from school fro

*asked on October 11, 2015* -
## Language Arts

"President Lincoln's Declaration of Emancipation, January 1, 1863 by Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears It shall flush the mountain

*asked on April 21, 2016* -
## Math

1. Jenny is building a rectangular garden around a tree in her yard. The southwest corner of the garden will be 2 feet south and 3 feet west of the tree. The northeast corner of the garden is 1 foot north and 4 feet east of the tree. What will be the

*asked on September 23, 2015* -
## Science

which two conditions are required for cloud formation? A) high humidity and warm temperatures. B) high humidity and cool temperatures. C) warm temperatures and the presence of particles. D) cool temperatures and the presence of particles. Is there a link I

*asked on May 2, 2016* -
## Math

1. o is the center of the given circle. The measure of angle o is 134*. The diagram is not drawn to scale. Assuming that lines that appear to be tangent are tangent, what is the value of X? A) 67 B) 46 C) 314 D) 268 When I solve this, i get B. But I've

*asked on June 8, 2016* -
## Language Arts

*Clean start, I'll also explain my answer choices. Be still, sad heart! and cease repining; Behind the clouds is the sun still shinning; thy fate is the common fate of all, into each life some rain must fall some days must be dark and dreary 1. from the

*asked on April 21, 2016* -
## Engineering/Physics

The space shuttle fleet was designed with two booster stages. If the first stage provides a thrust of 5.25 Mega-newtons and the space shuttle has a mass of 4,530,000 pound-mass, what is the acceleration of the spacecraft in miles per hour squared?

*asked on September 14, 2016* -
## College Chemistry

In this lab: we demonstrated the method of evaporation of a saturated sodium chloride solution. The following question ask: 1) why is sodium chloride chosen for the solute? 2)Suggest reasons why the following were not chosen for the solute? a)Calcium

*asked on September 4, 2010* -
## math

The sides of a square field are 12 meters. A sprinkler in the center of the field sprays a circular area with a diameter that corresponds to a side of the field. How much of the field is not reached by the sprinkler? Round your answer to the nearest

*asked on January 4, 2016* -
## Calculus

Find equations of both the tangent lines to the ellipse x^2 + 4y^2 = 36 that pass through the point (12, 3). smaller slope y= larger slope y=

*asked on March 14, 2014* -
## college algebra

In the state of Indiana, 192,031 people claim not to speak English very well. If this is 3.2% of the population of Indiana residents aged 5 years and older, estimate the population of Indiana residents aged 5 years and older. (round to the nearest person)

*asked on September 15, 2015* -
## Physics

Assume that you take data on the projectile range for a variety of different launch angles A at a fixed initial velocity Vo. You would like to plot your data to see if the range formula discussed in the introduction is supported by the data. The easiest

*asked on February 17, 2014* -
## Math

1. What is the hypothesis of the following conditional statement? If we walk home from school, it takes 30 minutes. A) We walk home from school. B) It takes 30 minutes. C) We do not walk home from school. D) We walk. Is the answer B? I'm sorry if I'm

*asked on January 30, 2016* -
## Physics

For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle A = 30 degrees. For what other launch angle will the projectile have the same range (assuming the same initial projectile speed)? Without the use

*asked on February 17, 2014* -
## Math

3. A quadrilateral ____________ has one pair of parallel sides. A) always B) sometimes C) never D) inconclusive Is the answer B? I kinda wanna say D, but I believe it's B.

*asked on June 7, 2016* -
## Math

5. What is the contrapositive of the following conditional: "If a student plays basketball, then the student is over 6 feet tall." A- If a student is over 6 feet tall then the student plays basketball. B - IF a student is not over 6 feet tall, then the

*asked on January 27, 2016* -
## Math

1. The volume of a sphere is 1476 pi m^3 . What is the surface area of the sphere to the nearest tenth? A) 629.9 m^2 B) 672.4 m^2 C) 1,344.8 m^2 D) 1,973.5 m^2 Is the answer D?

*asked on June 7, 2016* -
## Math

What type of conic section is given by the equation 4x^2+9y^2=36? What are its domain and range?

*asked on May 30, 2013* -
## Calculus

A container in the form of a right circular cone (vertex down) has a radius of 4m and height of 16m. If water is poured into the container at the constant rate of 16m^3/min, how fast is the water level rising when the water is 8m deep. V=(pi/3)(r^2)h

*asked on July 27, 2014* -
## Math

1. Write the following reversible as a biconditional: If two perpendicular lines intersect, they form four 90* angles. A) Two intersecting lines are perpendicular if and only if they form four 90* angles. B) Two intersecting, perpendicular lines do not

*asked on February 5, 2016* -
## Physics

For a given initial projectile speed Vo, calculate what launch angle A gives the longest range R. Show your work, don't just quote a number.

*asked on February 17, 2014* -
## math

A radio station broadcasts a signal over an area with radius of 50 miles. The station can relay the signal and broadcast over an area with a radius of 75 miles. How much greater is the area of broadcast region when the signal is relayed? Round your answer

*asked on December 30, 2015* -
## Math

Divide 33 photos into 2 groups so that the ratio is 4:7

*asked on August 28, 2017* -
## Math

1. What is the area of a regular octagon with an apothem 16 inches long and a side 19 inches long? Round the answer to the nearest inch. A) 144 in^2 B) 216 in^2 C) 1,216^2 D) 2432 in^2 Is the answer D? That's what I solved it.

*asked on June 8, 2016* -
## math

A farmer is using a random sample to predict the number of broken eggs in a shipment of 3,000 eggs. Using a calculator, the farmer generates the following random numbers. The numbers 1-250 represent broken eggs. 477, 2116, 1044, 81, 619, 755, 2704, 900,

*asked on March 5, 2016* -
## Calculus

A ship sailing parallel to shore sights a lighthouse at an angle of 12 degrees from its direction of travel. After traveling 5 miles farther, the angle is 22 degrees. At that time, how far is the ship from the lighthouse?

*asked on October 23, 2011* -
## CHEMISTRY HELP !!!!

As a standard voltaic cell runs, it "discharges" and the cell potential decreases with time. Explain.

*asked on April 19, 2014* -
## Math

1. Where is the incenter of any given triangle? A) the point of concurrency of the altitudes of the triangle. B) The point of concurrency of the medians of the triangle. C) The point of concurrency of the perpendicular bisectors of the triangle. D) The

*asked on February 1, 2016* -
## math

Here is the information for two pay-as-you-go cell phone companies, On Call- 3.5 hours: $10 Talk Time- 1/2 hour: $1.25 1)What is the unit rate in dollars per hour for each company? 2)Which company offers the best deal? Explain your answer. 3)Another

*asked on October 6, 2015* -
## Language Arts (Check Answers)

"President Lincoln's Declaration of Emancipation, January 1, 1863 by Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears It shall flush the mountain

*asked on April 22, 2016* -
## Physics

A small washer is taped to a golf ball and the ball is hung from an electromagnet. When a trigger is activated the electromagnet will shut off and the golf ball will fall through a height of 75 cm to land on a time of flight pad. Determine the amount of

*asked on February 3, 2014* -
## English

A brief, concise introduction can be effective. True False I pick true, please recheck my answer.

*asked on August 6, 2016* -
## algebra

A tropical species of mite named Archegozetes longisetosus is the record holder for the strongest insect in the world. It can lift up to 1.182 x 10^3 times its own weight. a) If you were as strong as this insect,explain how you could find how many pounds

*asked on August 31, 2016* -
## Math

1. When would the following conditional be false? If you work 20 hours a week, then you make 125.00. A) You work 25 hours a week, and make 125.00. B) You work 25 hours a week, and you make 175.00. C) You work 20 hours a week, and you make 175.00. D) You

*asked on January 30, 2016* -
## Math

1. O is the center of the given circle. the measure of angle O, is 134. The diagram is not drawn to scale. Assuming that the lines that appear to be tangent are tangent, what is the value of x? A) 67 B) 46 C) 314 D) 268 can someone please help? I saw an

*asked on June 7, 2016* -
## statistics

Two cards selected from standard deck of 52 cards. The first is replaced before second card selected. Find the probability of selecting a diamond and then a king

*asked on February 18, 2016* -
## Chemistry

Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons transferred and F=96,500C/(mol e−) is the Faraday constant. When E∘ is measured in volts, ΔG∘ must be in

*asked on May 18, 2014* -
## business

Tim Urban, owner/manager of Urban's Motor Court in Key West, is considering outsourcing the daily room cleanup for his motel to Duffy's Maid Service. Tim rents an average of 50 rooms for each of 365 nights (365 X 50 equals the total rooms rented for the

*asked on January 22, 2014* -
## Social Studies

1)How did the shift to farming impact native american cultures? A) Farming impact native cultures to build more permanent shelters out of brick, clay, stone, and wood. B) Agriculture led to a new way of life for native peoples, encouraging the development

*asked on September 9, 2015* -
## Physics

A dynamics cart with a friction pad is placed at the top of an inclined track and released from rest. The cart accelerates down the incline at a rate of .60m/s^2. If the track is angled at 10 degrees above the horizontal, determine the coefficient of

*asked on March 3, 2014* -
## statistics

In a contest in which 8 contestants are entered, in how many ways can the 5 distinct prizes be awarded?

*asked on August 8, 2010* -
## math

A random sample of dogs at different animal shelters in a city shows that 12 of the 60 dogs are puppies. The city's animal shelters collectively house 1,200 dogs each year. About how many dogs in all of the city's animal shelters are puppies? THANK YOU!

*asked on February 25, 2016* -
## math

Bella rolls 2 number cubes 60 times. How many times can she expect the sum of the numbers to be greater than 10? THANK YOU!

*asked on February 19, 2016* -
## Statics

The two forces shown act in the x-y plane of the T-beam cross section. If it is known that the resultant R of the two forces has a magnitude of 3.8 kN and a line of action that lies 14° above the negative x-axis, determine the magnitude of F1 and the

*asked on September 1, 2014* -
## Language Arts

Matt hiked the trail yesterday. It made him tired. Which sentence combines the two sentences using a gerund phrase? A- hiking the trail yesterday made Matt tired B- Matt hiked the trail and it made him tired. My answer C-It made Matt tired to hike the

*asked on June 8, 2016* -
## college algebra

In Japan, there were 94,848 deaths attributed to heart disease and the population of Japan is about 128 million. If the United States were able to reduce its number of deaths to be proportional to that of Japan, about how many deaths due to heart disease

*asked on September 16, 2015* -
## theoretical probability

Each student in a class of 25 students wrote down a random digit. What is the predicted number of students who wrote a digit that is greater than 7? The answer is 5... How did they get 5? THANK YOU!!

*asked on February 20, 2016* -
## English

Subject guides contain sources that have been selected by humans. True False I say True

*asked on October 1, 2016* -
## History

1.Which is an effect of deforestation? A. soil erosion B. air pollution C. water pollution D. earthquakes 2.Which of the following is a reason so many people have migrated from Middle America to other regions? A. They dislike the region's climate. B. They

*asked on October 29, 2018* -
## college algebra

According to the CDC there were 597,689 deaths in the US in 2010 attributed to heart disease. Given that the US population in 2010 was close to 308 million, what was the death rate per capita for heart disease in the US for 2010? (round to five decimal

*asked on September 16, 2015* -
## Chemistry

This is a lab called Enthalpy and Entropy of Borax Dissolution and I just can't seem to get the right answers... Please help me fill in the blanks The _____ (acid/HCl?)is placed in the buret and the ____ (base/borax?) is placed in the flask beneath the

*asked on July 5, 2012* -
## physics

(a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.561 m. What is the charge on each?

*asked on February 14, 2016* -
## Physics

A "reference ring" with moment of inertia Ic rests on a solid disk torsion pendulum with a moment of inertia I0. a) What is the period T0 for the motion with the disk alone? b) What is the period T1 for motion with the combined system? c) Use the

*asked on April 14, 2014* -
## College Physics

A truck moving north at a speed of 70 km/h. The exhaust pipe on top sends out a trail of smoke that makes a 20 degree angle east of south. If the wind is blowing toward the east. What is the wind speed at that location?

*asked on February 10, 2016* -
## English

Which of the following is unimportant for an introduction in formal or academic writing? a.Entertaining the audience b.Establishing the key point the piece of writing will make c. Discussing your opinion on the topic for at least three sentences.

*asked on August 6, 2016* -
## Math

1. Find the midpoint AB. Point be is located at (6,6) and point A is located at (-3,-3). There's a straight line connecting them. A) (4.5, 4.5) B) (1.5, 1.5) C) (3,3) D) (2,2) Is the answer D?

*asked on January 23, 2016* -
## Trigonometry

Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

*asked on May 10, 2015* -
## Math

1. In triangle DEF, m angle D=45, m angle E=63, and EF=24 in. What is DE to the nearest tenth of an inch? A) 30.3 in. B) 15.1 in. C) 32.3 in. D) 10.5 in. Is the Answer A? I'm not quite sure though since i'm confused on this question. If someone could help

*asked on April 19, 2016* -
## Chemistry

A sample of oxygen, O2, occupies 32.2 mL at 30 °C and 452 torr. What volume will it occupy at –70 °C and the same pressure?

*asked on November 7, 2017* -
## Maths

4. Tonya is 1.3 meters tall. She stands 7 meters in front of a tree and casts a shadow 1.8 meters long. How tall is the tree?

*asked on November 12, 2014* -
## algebra

Bob had three 10' lengths of conduit. If he used a total of 13.75' of conduit to install a motor, how much total conduit does he have left?

*asked on June 28, 2012* -
## physics

A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force

*asked on January 27, 2014* -
## math

The point (3,0) lies on a circle with the center at the origin. What is the area of the circle to the nearest hundredth? THANK YOU!

*asked on January 11, 2016* -
## Math

1. When constructing a congruent line segment to cd , the ray needed for the construction must be shorter than CD. A) True B) False Is the answer false?

*asked on September 21, 2015* -
## ss

Which of the following shows the strong influence of African traditions in Brazil? A. music and dance during the celebration of Carnival B. the use of plantation agriculture to grow cash crops C. the large Catholic majority in Brazil D. the strong national

*asked on November 27, 2018* -
## Physics

An object begins at rest on a frictionless inclined plane at a linear distance of 2.0m from the base of the incline. If the incline makes an angle of 20 degrees with the horizontal, determine the time it will take for the object to reach the base of the

*asked on February 10, 2014* -
## ss

Which is an effect of deforestation? A. soil erosion B. air pollution C. water pollution D. earthquakes

*asked on October 29, 2018*