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Thepotemich [5.8K]

3 years ago

5

−8x+6−2=−12 what is x?

2 answers:

butalik [34]3 years ago

6 0

Answer:

(f+g)(x) = f(x) +g(x)

= (7x^3 −2x−12) +(−3x^3 -8x^2 +10x)

= x^3(7 -3) +x^2(-8) +x(-2+10) +(-12)

= 4x^3 -8x^2 +8x -12

Corresponds to selection C.

Step-by-step explanation:

zubka84 [21]3 years ago

4 0

Answer: x=2

Step-by-step explanation:

have a good day! :)

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X + 7y = 21<br> x + 4y = 15<br> Solve the simultaneous equations

Mariulka [41]

<u>Answer</u>:

x = 7, y = 2

<u>Explanation</u>:

equations given:

x + 7y = 21

x + 4y = 15

make "x" the subject:

x + 7y = 21

x = 21 - 7y .........equation 1

x + 4y = 15

x = 15 - 4y .......equation 2

Solving both the equations simultaneously:

15 - 4y = 21 - 7y

-4y + 7y = 21 - 15

3y = 6

y = 6 ÷ 3

y = 2

If y is 2

Then x = 21 -7y;

x = 21 - 7(2)

x = 21 - 14

x = 7

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adelina 88 [10]

$96

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How do you figure out the reciprocal of a numer? E.g 5, 2/7 and 1&2/5 ??

eimsori [14]

You need to multiply 1 and 5 plus 2.
and for 5 2/7 it would be 5 times 7 plus 2.

So...
5 2/7= 37/7

1 2/5= 7/5

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