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3 years ago

3y -7y + 18x + y + 21x + 9 - 13 Simplify the expression

Mathematics

1 answer:

Leviafan [203]3 years ago

7 0

Answer:

-3y+39x-4

Step-by-step explanation:

3y minus 7y plus y is -3y. 18x plus 21x is 39x. 9 minus 13 is -4

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ivolga24 [154]

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62 shows up one more time than all the other numbers, and so 62 is your answer.

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vovangra [49]

Answer:

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Step-by-step explanation:

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2 years ago

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3 years ago

A model rocket is launched with an initial velocity of 200 ft per second. The height h, in feet, of the rocket t seconds after t

Solnce55 [7]

Answer:

2.10 s, 10.40 s.

Step-by-step explanation:

We know that the height of the rocket is given by the function:

$h=-16t^2+200t$

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$t=\frac{-b+-\sqrt{b^2-4ac} }{2a}$

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3 years ago

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The best and most correct answer among the choices provided by the question is the third choice.

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