Triangle XYZ is an equilateral triangle. YW‾ \overline{\rm YW} YW is an altitude of the triangle. If XY‾ \overline{\rm XY} XY is 10 in., what is the length of the altitude?
(A)5 in.
(B)5 √3 in.
(C)10 in.
(D)10 √3 in.
(E)5√2 in.
In the xy-coordinate system, if (r, s) and (r + 2, s + t) are two points on the line defined by the equation y = 4x + 5, then t = ?
（A）4 （B） 5 （C） 8 （D） 9 （E） 11
Correct Answer: C
The ratio of boys to girls in a math class is 4 to 5. If there are 18 students in the class, how many are boys
（A） 2 （B） 4 （C） 8 （D） 12 （E） 13
Correct Answer: C
The highest and lowest test scores of five students in Mr. Canyon's science class are listed below. Which student had the greatest range of scores?
(F) Alicia (G) Brandon (H) Cleo (J) David (K) Emily
Correct Answer: K
More ACT Math Exam Questions
- 1
If pq+ 12 = 3p+ pr,and q– r= 7, what is the value of p?
- 2
The highest and lowest test scores of five students in Mr. Canyon's science class are listed below. Which student had the greatest range of scores?
- 3
Every week, Donald records the amount of mileage that has accumulated on his truck. On Monday, Donald recorded that he had driven 16,450 kilometers. After a week of deliveries, his new recording was 18,130 kilometers. He drove for thirty hours during that week. What was his average driving speed during that week to the nearest kilometer per hour?
- 4A formula for calculating simple interest is I = Pr, were I is the interest earned in dollars, P is the principal or original investment, and r is the fixed rate of interest. If the amount of interest earned is $2.25 and the interest rate is 3%, what is P?
- 5
Given triangle CDE (shown below) with a right angle at point E, what is the length of leg DE?
