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Biblioteka

IM: 7.5.16: Representing Contexts with Equations (Practice)

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Posljednje ažuriranje over 1 year ago
12
1
Pitanje 1
1.

Match each situation to one of the equations.

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

-2x=-12

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The temperature was -12 degrees Celsius and rose to 2 degrees Celsius. What was the change in temperature?

-12+x=2

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The temperature was 2 degrees Celsius and fell to -12 degrees Celsius. What was the change in temperature?

2x=-12

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A swimmer dove below the surface of the ocean. After 2 minutes, she was 12 meters below the surface. At what rate was she diving?

2+x=-12

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A whale was diving at a rate of 2 meters per second. How long will it take for the whale to get from the surface of the ocean to an elevation of -12 meters at that rate?

1
1

Starting at noon, the temperature dropped steadily at a rate of 0.8 degrees Celsius every hour.

For each of these situations, write and solve an equation and describe what your variable represents.

1
Pitanje 2
2.

How many hours did it take for the temperature to decrease by 4.4 degrees Celsius?

1
Pitanje 3
3.

If the temperature after the 4.4 degree drop was -2.5 degrees Celsius, what was the temperature at noon?

Pitanje 4
4.

Kiran mixes \frac{3}{4} cups of raisins, 1 cup peanuts, and \frac{1}{2} cups of chocolate chips to make trail mix. How much of each ingredient would he need to make 10 cups of trail mix? Explain your reasoning.

Find the value of each expression.

1
Pitanje 5
5.

12+-10

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Pitanje 6
6.

-5-6

1
Pitanje 7
7.

-42+17

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Pitanje 8
8.

35--8

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Pitanje 9
9.

-4\frac{1}{2}+3

Pitanje 10
10.

The markings on the number line are evenly spaced. Label the other markings on the number line.

Kiran drinks 6.4 oz of milk each morning. How many days does it take him to finish a 32 oz container of milk?

1
Pitanje 11
11.

Write and solve an equation for the situation.

1
Pitanje 12
12.

What does the variable represent?