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lara31 [8.8K]
3 years ago
7

(3x – 5 – 7x2) – (–2 + 6x2 – 5x)

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

8x-13x²-3

Step-by-step explanation:

you first have to work with the negative sign and the brackets by multiplying the negative sign by everything in the second brackets

3x-5-7x²+2-6x²+5x

then group the like terms

3x+5x-7x²-6x²+2-5

8x-13x²-3

I hope this helps

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Answer: number 3 is 32 number 4 is 40 minutes

Step-by-step explanation:You see in number 3 it says a millipede has 14 more legs than a caterpillar. Also it states the total of the legs are 46. This means you must subtract. 46-14 is equal to 32. And for number 4 it states the total time of all her classes are 1 hour and 10 minutes. The yoga class is 30 minutes longer. This means you must subtract those 30 minutes from the 1 hour and 10 minutes. 1 hour and 10 minutes- 30 minutes is equal to 40 minutes. This is the answer.

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3 years ago
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If y varies directly as x and y = 3 when x = - 9, then find x when y = 5.
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Step-by-step explanation:

The equation for direct variation is

y = kx

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3 = k(-9)

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The equation is then

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Multiply each side by -3

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Step-by-step explanation:


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