Question

What is the value of 5.7 × 108?
a. 5,700,000,000
b. 5.70000000
c. 570,000,000
d. 57,000,000 User: Which of the following has a value of 84?
a. 83
b. 512
c. 4,096
d. 32 User: What is the prime factorization of 1,260?
a. 2 × 3 × 5 × 6 × 7
b. 2 × 3 × 5 × 7
c. 4 × 5 × 7 × 9
d. 2 × 2 × 3 × 3 × 5 × 7 User: Which of the following is a composite number?
a. 139
b. 29
c. 91
d. 13

Answer 1

The value of 5.7 x 10⁸ is 570,000,000 CHOICE C.

The value of 8⁴ is 8 * 8 * 8 * 8 = 4,096 CHOICE C.

Prime factorization of 1,260

1260 ÷ 2 = 630
  630 ÷ 2 = 315
  315 ÷ 3 = 105
  105 ÷ 3 =  35
    35 ÷ 5 =    7

2 x 2 x 3 x 3 x 5 x 7 CHOICE D.

Composite numbers are numbers that have more factors other than 1 and itself.

91 / 1 = 91
91 / 7 = 13      CHOICE C. 91 is a composite number.