## 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

3x3·2x2y·4x2y is equivalent to:

(A) 9x7y2 (B) 9x12y2 (C) 24x7y2 (D) 24x12y (E) 24x12y2

**Correct Answer: C**

What is the solution set for the equation |-x| = x?

（A）All real numbers （B） x ≥ 0 （C） x ≤ 0 （D） Only x = 0 （E） Only x = -1

**Correct Answer: B**

An outdoor thermometer in Hanover, NH reads 70°F. The temperature in Hanover is 25°F cooler than in New Orleans,LA. What is the temperature, C, in degrees Celsius, in New Orleans?

(Note: F = C + 32)

（A）21°C （B） 35°C （C） 68°C （D） 95°C （E） 113°C

**Correct Answer: B**

### More ACT Math Exam Questions

- 1What is the distance in the standard (x, y) coordinate plane between the points (5,5) and (1,0)?
- 2
If x - 15 = |-5|, then x =?

- 3If sin θ = and cos θ = , then csc θ = ?
- 4The vertices of a parallelogram in the coordinate plane are (3, 3), (7, 3), (8, 8), and (4, 8). What is the area of this parallelogram?
- 5
In isosceles triangle

*ABC*below, the measures of*BAC*and*BCA*are equal and . The diagonals of trapezoid*DECA*intersect at*F*. The lengths of and are 6 centimeters, the length of is 9 centimeters, and the length of is 27 centimeters. What is the length, in centimeters, of ?