Exam

Topics: Triangle, Hypotenuse, Right triangle Pages: 3 (254 words) Published: April 29, 2014
04.10.2014
Instructor: Silviana Munayco
MAT520 Spring 14

Student Name:

Exam 3
NOTE: NO WORK, NO CREDIT! Please read the questions carefully! Be VERY neat and organized, or you will get no credit for your work. You may write on the back of the paper. Please put a note if you want me to check anything on the back of the pages.

1. Solve the following:
4
(a) − w = 16
9

1
(b) 3 + p = 5
4

(c)

1
s − 10 = −5
3

2
(d) 4 + n = −10 + 2
3

1
1
2. A triangular tent flap measures 3 feet along the base, and has a height of 4 ft. How much canvas 2
2
is needed to make the flap?

3. Find each of the following:
(a) 9.3 ÷ (−1.25)

(b) 0.6 + (−1.89 ÷ 0.11) ÷ 0.004(0.5)

4. (a) Find the length of the longer leg of the right triangle whose shorter leg is 5 m and hypotenuse is 13 m. (simplify the radical if needed)

(b) Find the hypotenuse of the right triangle whose legs are 8 in and 15 in. (simplify the radical if needed)

5. Solve the following:
(a) −.02 = k − 0.7

(b) 8.3w = −49.8

(c) −10.9 + 0.5p = 0.9p + 5.3

6. Write each percent as a decimal and each decimal as a percent. (a) 6.7%

(b) 250%

(c) 0.076%

(d) 0.0312

(e) 0.494

(f) 0.875

7. Write each percent as a fractions. Fully simplify (no mixed fractions). (a) 37.5%

(b) 6.25%

(c) 43.75%

8. The guided-missile destroyer USS Sullivans has a 335-person crew of which 44 are females. What percent of the crew if female? What percent of the crew is male?

9. Write an equation and solve.
(a) 10% of 7 feet is how many feet?

(b) 70 truckloads is what percent of 140 truckloads?

1
(c) 6 % of what number of bottles is 130 bottles?
2

(d) 7% of $480 is how much?

(e) What percent of $264 is $330?

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