ACT Practice PT50

The lengths of the sides of a triangle are 3 consecutive even integers. If the perimeter of the triangle is 36 centimeters, what is the length in centimeters of the shortest side?

• 7

• 8

• 10

• 12

• 14

Tags

CCSS.6.EE.C.9

So far, a student has earned the following scores on four 50-point quizzes during this marking period: 40, 37, 44, and 42. What score must the student earn on the fifth quiz to earn an average quiz score of 42 for the 5 quizzes?

• 42

• 45

• 47

• 49

• The student cannot earn an average of 42

Tags

CCSS.7.EE.B.3

• 125

• 130

• 132

• 143

• 163

Tags

CCSS.HSA.APR.A.1

For all real numbers x, how many values of x are odd prime numbers less than 20?

• 3

• 5

• 6

• 7

• 8

Tags

CCSS.5.OA.B.3

How many different, real number, prime factors does the number 120 have?

• None

• 2

• 3

• 8

• 10

Tags

CCSS.4.OA.B.4

What is the least common multiple of 30, 40, and 50?

• 1200

• 800

• 600

• 400

• 50

What is the x-intercept of the line that contains the points (-2, 3) and (4, 1) in the standard (x, y) coordinate plane?

Answer explanation

Remember the x-intercept is the x-value when the y-value is 0. You could eliminate the three choices that have something other than 0 for y.

That left either (7, 0) or (1/2, 0). If you graph the two points, you'd quickly see it would not cross the x-axis at (1/2, 0).