Please help. This test is very important.

1 answer:

4 0

1. (−2/3) (16)
Enter your answer as a fraction, in simplified form.

answer: -32/3

2. What is the product of −2 1/2 and −3 1/3 ?
answer: 25/3

3. Divide.

−24/7
answer: -3 3/7

Enter your answer as a mixed number, in simplified form.

4. A running cheetah begins to slow down. For each meter the cheetah travels, its speed changes by −3.4−3.4 kilometers per hour. The cheetah travels a total of 21.5 meters.

What is the total change in the cheetah's speed during this time?
A. 73.1
B. 71.9
C. -71.9

answer: D. -73.1

5. Multiply.

(−0.64) (−2.5)

answer: 1.6

Enter your answer as a decimal.

6. Christopher recorded the low temperature each day for 1 week and recorded his results in this table.

Day Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Low −5 °F −8 °F −6 °F −8 °F −3 °F 2° F 7° F
What is the average low temperature for the week?
answer: -3

7.Divide.

5/6÷−2/3
answer: -5/4 or - 1 1/4 (mixed #) or -1.25 (decimal)

8. Jerry measured and timed the descent of a diving bell spider in a large fish tank. The spider reached a position 4 1/2 inches below the surface of the water after descending at a constant rate for 1 1/2 seconds. Jerry recorded this as −4 1/2 inches.

What is the position of the spider relative to the surface after 1 second?
answer: -3

9. Divide.

(3 3/4) ÷ (−2 1/2)

Enter your answer as a mixed number, in simplified form.
answer: -1 1/2

10. Miko’s restaurant bill was $16. She used the expression 1.18(16) to find the total cost including an 18% tip.

Which expression is equivalent to the amount Miko paid?

answer: 16 + 0.18(16)

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