# Raquel

Popular questions and responses by Raquel
1. ## Physics AP

A 32 kg child goes down a straight slide inclined 38∘ above horizontal. The child is acted on by his weight, the normal force from the slide, and kinetic friction. How large is the normal force of the slide on the child?

2. ## Math

Two numbers differ by 6. The sum of their squares is 116. Find the biggest number.

3. ## Algebra

A boat travels 28 km upstream in 7 hours. It travels 48 km downstream in 4 hours. Find the speed of the boat and the speed of the stream.

4. ## Chemestry

What is the van't Hoff factor for K2SO4 in an aqueous solution that is 5.00 % K2SO4 by mass and freezes at -1.21 ∘C?

5. ## Math

In an automobile race, the rate of one car was 120 mi/hr and the rate of another was 105 mi/hr. If the faster car finished the race 20 minutes before the slower one, what was the distance of the race?

6. ## Math

The difference between a number and its reciprocal is 7/12. Find the number.

7. ## Math

A children's park is 350m long and 200 m wide. It is surrounded by a pathway of uniform wittd. Suppose the total area of the park and the pathway is 74,464 meter square. How wide is the pathway?

8. ## Algebra

Triangle DOG is congruent to triangle CAT, DO=5, OG = 6, DG = 7 and CA = 2x + 1. Find x

9. ## Algebra

Rosa is 14 years older than her sister Amy. 3 years ago, she was 3 times as old as Amy. How old are they now?

10. ## Genetics

By the way, my homework is due Wednesday, November 13th at 4:10 pm. I would appreciate it if you could please walk me through all of the steps to solve all parts of this problem. If a triple-heterozygote is testcrossed and yields 3000 progeny, among them

11. ## Algebra

An ordinary plane leaves an airport and flies due west at 180kph. Two hours later, a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane?

12. ## Algebra

The ticket prices for a movie are shown in the illustration. Receipts for one showing were \$1,990 for an audience of 215 people. How many general admission tickets and how many senior citizen tickets were sold? (General admission tickets: \$10 Senior

13. ## Algebra

A woman invested some money at 8% and some at 9% annual simple interest. The interest for 1 year on the combined investment of \$10,000 was \$860. How much was invested at each rate?

14. ## physics

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 25 m/s at an angle 24 ∘

15. ## science

The measure of how much material makes up an object is the?

16. ## math

round to the nearest thousand 9612

17. ## Physics

The average intensity of sunlight at earth's surface is approximately 1400 W/m^2 , if the Sun is directly overhead. The average distance between the earth and the sun is 1.50E11 m. What is the average power emitted by the Sun? Ok so intensity is power over

18. ## physics

0.1kg of ice initially at a temperature of -10 degrees Celsius is added to a cup with .5kg of water initially at 20 degrees Celsius. The water and ice are isolated thermally from their surroundings. The specific heat of ice is 2000 J/kgoC, the specific

19. ## Math

If a=25cm and b=2meters, what is the ratio of a to b?

20. ## Algebra

In an automobile race, the rate of one car was 120 mi/hr and the rate of another was 105 mi/hr. If the faster car finished the race 20 minutes before the slower one, what was the distance of the race?

21. ## Math

Imelda's plane travels at a speed of 350kph in still air. One day, she travels 169km against the wind at the same time it takes to travel 190km with the wind. Find the speed of the wind.

22. ## Algebra

A boat can travel 48 miles downstream in 4 hours and can make the return trip in 6 hours. Find the speed of the boat in still water.

23. ## physics

a billiard ball rolling across a table at 1.50m/s makes a head on collision with an identical ball. find the speed of each ball after the collision;when the ball is at rest;when the 2nd ball ]is moving towards the first at the speed of 1.0m/s; when the

24. ## Physics

There are competitions in which pilots fly small planes low over the ground and drop weights, trying to hit a target A pilot flying low and slow drops a weight; it takes 1.6 s to hit the ground, during which it travels a horizontal distance of 160 m . Now

25. ## Physics

A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.4 cm below the aim point What was the bullet's speed as it left the barrel? Express your answer to two significant figures and include the appropriate units

26. ## Science

Compare and contrast a desert ecosystem and a forest ecosystem.

27. ## math

Gary has \$1.56 in change in his pocket. if there is a total of 19 coins, how may quarters, dimes, nickeland pennies does her have?

28. ## math

round 749 to the nearest hundred

29. ## math

round to the nearest tens. 646

30. ## Math

cos22.5=1/2 sqrt(A + sqrt B)

31. ## science

If you watch a movie scene in which a loud explosion occurs in the space. What do you conclude about the accuracy of the scene?

32. ## Math

A wire measures 137 centimeters in length. The shorter piece is 13 centimeters short. find the of length each piece.

33. ## Calc 3

A wrench .9m long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of (0,1,3) at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 J of torque to the bolt. This is the

34. ## Science

What were Mendeleev's reversals?How did Henry Moseley explain them? Mendeleev thought the periodic table was in order of atomic mass. Mosley determined that atomic number was the correct order. http://www.chemistry.co.nz/henry_moseley.htm

35. ## Genetics

Homework due Wednesday, December 11th at 4:10 pm. Please walk me through all the steps on how to solve this problem. A farmer wishes to increase the average body weight in a herd of beef cattle. He begins with a herd that has a mean weight of 595 kg, but

36. ## Genetics

By the way, my homework is due Wednesday, November 13th at 4:10 pm. I would appreciate it if you could please walk me through all of the steps to solve all parts of this problem. Given a genetic map with genes A, B, C, and D, calculate the frequency of the

37. ## Genetics

By the way, my homework is due Wednesday, November 13th at 4:10 pm. I would appreciate it if you could please walk me through all of the steps to solve all parts of this problem. In the garden pea, orange pods (g) are recessive to green pods (G), and

38. ## Genetics

Genetics problem please help the whole homework assignment is due tomorrow at 4:10 pm Packrats exhibit many interesting behaviors. Let's say that the trait of bringing home fun shiny objects (controlled by the allele H) is dominant to the trait of bringing

39. ## Genetics

Genetics problem please help the whole homework assignment is due tomorrow at 4:10 pm A researcher is interested in two important phenotypes in sorghum: stem color and seed sweetness. Use G for red stems and g for green stems. Use S for sweet seeds and s

40. ## Genetics

Genetics problem please help the whole homework assignment is due tomorrow at 4:10 pm The L gene in guinea pigs controls hair length. The dominant allele L governs short hair, while the recessive allele l governs long hair. Hair color is specified by a

41. ## Math

Given triangleABC proportion to trianglePQR. If AB=4cm, BC=6cm, AC=9cm, and QR=4cm. What is the ratio of similitude?

42. ## Math

Two sides of a triangle are 8cm and 12cm long, and the altitude to the 8-cm side is 9cm. How long is the altitude to the 12-cm side?

43. ## Math

Given triangleABC proportion to trianglePQR. If AB=4cm, BC=6cm, AC=9cm, and QR=4cm, find the perimeter of trianglePQR

44. ## Math

If AB//CD//EF, BD=12cm, DF=16cm and AE=35cm, find AC

45. ## Math

In trianglePQR, if AB//QR, PA=3cm, PQ=8cm, and QR=9cm, how long is AB?

46. ## Math

If a 6-foot man has a shadow of 9 feet, how long a shadow would a 20-foot pole have?

47. ## Geometry

Two sides of a triangle are 8cm and 12cm long, and the altitude to the 8-cm side is 9cm. How long is the altitude to the 12-cm side?

48. ## Math

What should be the value of x so that the ratios 4:10 and x:12 will form a proportion

49. ## Math

Given triangleABC proportion to trianglePQR. If AB=4cm, BC=6cm, AC=9cm, and QR=4cm, find the perimeter of trianglePQR. What is the ratio of similitude?

50. ## MAth

The sides of a triangle are 15cm, 20cm, and 28cm. How long are the segments into which the bisector of the largest angle separates the opposite side?

51. ## Math

What number or numbers are equal to thrice their own square root?

52. ## Math

A manufacturer is in the business of producing small figurines. He finds that the daily cost in pesos,P, of producing n figurines is given by P= n2-120 +4200. How many figurines produced per day so that the cost will be minimum?

53. ## Math

A carpenter is to use 12m of wood to construct a picture frame.what is the maximum area of the frame

54. ## Math

The square of a certain integer plus three times itself equals 18. Find the integer

55. ## MaTh

find the value Of k of the product pf the roots of 2x square - 6x + k = 0 is 4.

56. ## Math help

If y = 3 is a horizontal asymptote of a rational function, which must be true? A) lim x→ 3 f(x) = 0 B) lim x→ 0 f(x) = 3 C) lim x→ ∞ f(x) = 3 D) lim x→ 3 f(x) = ∞ My answer is B

57. ## Algebra

TriangleWED is congruent to triangle FRI, angle W = 80degrees, angle D = 45 degrees, angle E = 55 degrees and angle R = 4x + 10. Find x

58. ## Algebra

A laboratory technician wishes to mix a 70% saline solutio and a 20% solution to prepare 500ml of a 40% solution. What amount of each solution should be used?

59. ## Math

A boat traveled 36 mi up a river in 3 hours, returning downstream, the boat took 2 hours. What is the boat's rate in still water and what is the rate of the river's current?

60. ## Math

Not counting the "turn around" , a helicopter carrying passengers between an airport and the roof of a downtown skycraper 20 miles away can make the round trip in 15 minutes. The helicopter flies 2 miles away with the wind when the time it flies 1 mile

61. ## Math

A motorboat travelling at full speed against a current goes 15 miles in one hour. Travelling at half speed with the current, it goes 12 miles in an hour. Find the rate of the current.

62. ## Math

The air speed of a plane is 150 mph. If the plane traveled the same distance in two hours with the wind as it flew in 3 hours against the wind, what was the wind speed?

63. ## Math

Not counting the "turn around" , a helicopter carrying passengers between an airport and the roof of a downtown skycraper 20 miles away can make the round trip in 15 minutes. The helicopter flies 2 miles away with the wind when the time it flies 1 mike

64. ## Math

Joe takes twice as long as to row against a current as with it. If he rows 6 miles an hour in still water, what is the rate of the water?

65. ## Math

A salmon swims 15 miles downstream from its birth to the ocean in 3 hours. The return trip upstream to spawn takes 5 hours. How fast does the salmon swim in still water?

66. ## trigonometry

A 15-foot ladder is resting against a wall and makes an angle of 48 degree's with the ground. Find the height to which the ladder will reach on the wall

67. ## Math

Y-2x=4 solve for x and y with graph

68. ## Math

What is the value of x and y in the equation 7y= 2x+28.

69. ## ALgebra

Three years ago, Wendy's age was 3/4 as old as Erna and Lucys age was 2/3 as okd as Erna. If the sum of their ages is 67, find the present age of each.

70. ## Algebra

Driving from Tulsa to Detroit, Takimi average 50mph, he figured thatnif he had average 60mph his driving hours would have decreased 3 hrs. How far is it from Tulsa to Detroit?

71. ## Algebra

120t = 105 (t+1/3) Find the disrance

72. ## Math

Tom can clean the living room in 45 minutes. Wally can clean it in 30 minutes. Both start cleaning and 5 minutes later their sister Gigi joins them taking them 7 minutes more to finish. How long would it take Gigi to clean the living room alone?

73. ## Math

A natural number decreased by 30 times its reciprocal is 1. Find the natural number.

74. ## Algebra

A boat travels 28 km upstream in 7 hours. It travels 48 km downstream in 4 hours. Find the speed of the boat and the speed of the stream.

75. ## Algebra

Find two consecutive integers such that 1/5 of the first less 1/9 of the second is 3

76. ## Algebra

Find two consecutive integers such that 1/5 of the first less 1/9 pf the secondnis 3

77. ## Marh

An ordinary plane leaves an airport and flies due west at 180kph. Two hours later, a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane?

78. ## Math

An airplane travels 1260km in the same time a car travels 420km. If the rate of the car is 120kph less than the rate of the airplane, find the rate of each.

79. ## Math

An airplane travels 1260km in the same time a car travels 429km. If the rate of the car is 120kph less than the rate of the airplane, find the rate of each.

80. ## Algebra

A rectangular-shaped dance floor has a perimeter of 164 feet. If the floor were 44 feet wider, its width would equal its length. Find the length and width of the dance floor.

81. ## Algebra

A merchant wants to mix gummy worms worth \$7 per pound and gummy bears worth \$3 per pound to make 30 pounds of a mixture worth \$4.60 per pound. How many pounds of each type of candy should he use?

82. ## Math

If two inlet pipes are open, they can fill a pool in 1 & 12 minutes, one of the pipes can fill the pool itself in 2 hours. How long will it take the other pipe to fill the pool by itself?

83. ## Math

A Square shaped animal pen and a pen shaped like an equilateral triangle have an equal perimeters. Find the length of the sides of each pen if the sides of the triangular pen are 16 less than twice a side of the square Pen.

84. ## Math

A university drama production sold a total of 400 tickets for P18,500. If student tickets sold for P40 & guest tickets for P60, how many tickets of each type?

85. ## Math

Eric has 48 bills valuing P1,500 to be deposited in a bank. If the bills consistedmof P20 & P50 bills, how many P50 bills does he have?

86. ## Math

One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

87. ## Math

One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

88. ## Math

Mother has P1 coin, P5 coins and P10 bill in her purse. In all, she has P112. She has two more P1 coin than P5 coins and one More P10 bills than P1 coins. How many of each kind does she have?

89. ## Math

Ricky has 16 coins consisting of P5 & P1 coins amounting to P44. How many of each kind does he have?

90. ## Math

Ricky has 16 coins consisting of P5 & P1 coins amounting to P44. How many of each kind does he have?

Based on this problem: "Wayne owns a shaved ice stand. He sells 700 shaved ice cups per month at \$1.50 each, making the total revenue \$1,050. Each shaved ice costs Wayne \$0.50 and he has fixed costs of \$750, making his total costs \$1,100. Therefore, he

92. ## Physics

A sprinkler mounted on the ground sends out a jet of water at a 30 ∘ angle to the horizontal. The water leaves the nozzle at a speed of 11 m/s . How far does the water travel before it hits the ground?

93. ## Physics

A car traveling at 40 m/s runs out of gas while traveling up a 7.0 ∘ slope How far will it coast before starting to roll back down?

94. ## physics

A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.4 cm below the aim point. Part A What was the bullet's flight time? Neglect the air resistance Part B What was the bullet's speed as it left the barrel?

95. ## Physics

A small plane is 150 km south of the equator. The plane is flying at 150 km/h at a heading of 30∘ to the west of north. how many minutes will the plane cross the equator?

96. ## Math

What is 7r + -5

97. ## Math

Explain how you know if a number can be divided by 10 evenly.

98. ## Math

Sarah has 10 stuffed animals. Explain two different ways she can group the stuffed animals so each group has the same number and no stuffed animals are left over.

99. ## Math

Sarah has 10 stuffed animals. Explain two different ways she can group the stuffed animals so each group has the same number and no stuffed animals are left over?