# Sonia

Most popular questions and responses by Sonia
1. ## Trig

From two different tracking stations, a weather balloon is spotted from two angles of elevation, 57degrees and 83 degrees, respectively. The tracking stations are 15 km apart. Find that altitude of the balloon. Any help given will be greatly appriciated

2. ## calculus

A fence 5 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

3. ## math

Paul has grades of 73 and 86 on his first two tests. What must he score on his third test in order to have an average of at least 70?

4. ## Trig

a sailor out in a lake sees two likght houses 11km apart along the shore and gets bearings of 285degrees from his present position for light house A and 237degrees for light house B. From light house B, light house A has a bearing of 45degrees. How far to

5. ## Chem H

How do you write a balanced net ionic equation for the reaction Cr2(SO4)3(aq)+(NH4)2(CO3)(aq)?

6. ## maths

THE Perimeter of a triangle is 2004. One Side of a triangle = 21 Times the other. the shortest side is integral length. SOLVE For lengths of the sides of the traingle in every possible case.

7. ## maths

using a scale of 1:250 draw an accurate plan of a rectangular garden measuring 25m x 15m.

8. ## physics urgent

A 1.5 m tall man stands 2 m in front of a flat wall mirror. Please find: image distance and height of image I have the formulas but i don't know how to solve this without the focal point or a radius...pls help!!!!!!!

9. ## Clothing and Textiles

What are thedifferent methods of controlling fullness in a garment. Need pictures

10. ## english iii

why did john choose the room in the yellow wallpaper?

11. ## physics

A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 4.16 m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 0.58 s before

12. ## math

Find the volume of the solid formed by rotating the region enclosed by y=e^4x+3 y=0 x=0 x=0.7 this is my work V = ∫ e^4x dx {between x=0 and x=0.7} = 1/4 e^4x {between x=0 and x=0.7} = 1/4 (e^2.8 - e^0) = 1/4 (e^2.8 - 1) however i am etting the wrong

13. ## Literature

What words and comparisons emphasize Achilles' speed? (question from the iliad)

14. ## Trignometry

A calculator is broken so that the only keys that still work are the \sin, \cos, \tan, \cot, \sin^{-1}, \cos^{-1}, and \tan^{-1} buttons. The display initially shows 0. In this problem, we will prove that given any positive rational number q, show that

15. ## physics

A man jogs at a speed of 1.7 m/s. His dog waits 1.4 s and then takes off running at a speed of 3.4 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? Answer in units of m

16. ## physics

A point charge of -8.4 µC is at the origin. a)What is the electric potential due to this charge at (x,y) = (3.5 m, 0 m) b) What is the electric potential due to this charge at (x,y) = (-3.5 m, 0 m) c) What is the electric potential to this charge at (x,y)

43. ## math

if you do a job in 4 hours, and your friend can do the same job but in 6 hours, and if you both work together how long will it take to complete the job?

44. ## poe

When Maggie applies the brakes of her car, the car slows uniformly from 15.9 m/s to 0 m/s in 2.43 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m

45. ## statistic

1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and the median are not equal.

46. ## physics

A transformer with 360 turns in its primary coil and 18 turns in its secondary coil is designed to delivered an average power of 1400 W with a maximum voltage of 60 V. What is the maximum current in the primary coil?

if you are printing an essay on the comuter....can the essay be double line space?

57. ## statistic

Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100 b. Relative frequency of

58. ## math

write the place name for the 4 in the following number 3 624 786

59. ## physics

a piece of iron has a temperature of 18 degrees celsius. A second identical piece of iron is twice as hot. What is the temperature of the second piece of iron? Please explain why.

60. ## math

the first term of an arthmetic progression is 1 and its last term is 28, find the sum of the progression if their number is 10

61. ## algebra

solve by substitution, 9x+2y=-64

62. ## algebra

In 1990, the life expectancy of males in a certain country was 66.3 years. In 1997, it was 70.0 years. Let E represent the life expectancy in years t and let t represent the number of years since 1990. E(t)= ___t +____ round to the nearest tenth. Use the

99. ## chemistry

calculate the weight in grams far a given solution of sodium thiosulphate crystals of strength 2.0M