## Find the value of cos A if angle A is acute and sin A = 7/10

(A) 3/10

(B) 1/9

(C) 7/√51

(D) 51/10

(E) √51/10

The point (24,3) on a standard (*x*,*y*) coordinate plane is halfway between points (*z*,2*z* + 1) and (15*z*,*z* - 4). What is the value of *z*?

(F) 1 (G) 1.5 (H) 3 (J) 7 (K) 24

**Correct Answer: H**

Light travels at approximately 186,000 miles per second. At that rate, approximately how many miles will it travel in 3 hours?

(A)1.6 × 105 (B)1.6 × 108 (C)2.0 × 108 (D)2.0 × 109 (E)2.2 × 109

**Correct Answer: C**

The expression x^{2} - 7x + 12 is equivalent to:

(F) (x - 12)(x + 1)

(G) (x - 4)(x - 3)

(H) (x - 4)(x + 3)

(J) (x - 6)(x - 2)

(K) (x - 6)(x + 2)

**Correct Answer: G**

### More ACT Math Exam Questions

- 1Blair expects an increase of 3% in her current annual salary of $42,000. What would her new annual salary be?
- 2 Find the area of the following figure
- 3
Among the following arithmetic operations, which could the emoticon represent given that the equation (8 2)

^{3}- (4 1)^{2 }= 48 is true?I. Subtraction

II. Multiplication

III. Division

- 4As part of a school report on the cost of gasoline, Raquel wants to find the average cost of purchasing a gallon of regular unleaded gasoline from local gas stations. She surveys 4 stations and finds the cost per gallon of regular unleaded gas from the 4 stations to be $2.45, $2.50, $2.49, and $2.56, respectively. Using this data, what is the average cost of purchasing one gallon of regular unleaded gasoline from these 4 gas stations?
- 5
If y = 0.25(100 - y), then what is the value of y?