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Zigmanuir [339]
3 years ago
6

Which problem could be solved by evaluating the expression 7 x (-3)?​

Mathematics
2 answers:
Tasya [4]3 years ago
6 0

Answer:

The answer is -21

Step-by-step explanation:

To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)

NNADVOKAT [17]3 years ago
5 0

Answer:

C: A cold front comes in and causes the temperature to drop 3 degrees every hour. What is the change in temperature after 7 hours?

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Step-by-step explanation:

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taurus [48]

The brick will fall to the ground after 9 secs.

<h3>What are quadratic equations?</h3>

Given the equation for height as a function of time is  h(t) = -16t2 + 1,296

The height of the brick on the ground is h(t) = 0. Substitute h(t) = 0 into the equation as shown:

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Subtract 1296 from both sides

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Learn more on equations here: brainly.com/question/13763238

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