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Maurinko [17]
3 years ago
8

Which expressions are equivalent? a. 3x-7y and -7y + 3x

Mathematics
1 answer:
Helga [31]3 years ago
8 0
The expressions which equivalent are letter A, 3x-7y and -7y+3x, because the order of the factor do not change the product or the final answer.
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There are 20 students in my class. Each student needs: .2 cups, 2 plates, 1 party hat and a pair of earphones. My teacher has 2
garik1379 [7]

Answer:

Simple, no. This would not be enough.

Step-by-step explanation:

This is because you mentioned that there are 20 students and each of them needed 2 plates. So, there would need to be at least 40 plates. Forks seem irrelevant in this question but if the teacher has 8 plates in 1 box and another 8 in the second box, that would sum up to 16 plates that are available. And the fact that the box doesn't even include the other items, should hint the lack of items available for the students.

This question seemed worded differently. But tried my best. :)

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2 years ago
A ball is thrown into the air with a velocity of 33 ft/s. Its height, in feet, after t seconds is given by
meriva

Answer:

velocity at t=1 is 1 ft/s

Step-by-step explanation:

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by substitution t=1 in v(t) equation we get

33-32=1 ft/s

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2 years ago
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aleksley [76]
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