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2 years ago

15

Subtract −7n+2 from 2n−1 . What is the answer? A.−5n+1 B.9n−3 C.9n + 1 D.−9n+3

2 answers:

damaskus [11]2 years ago

8 0

Answer:

9n−3

Step-by-step explanation:

Ludmilka [50]2 years ago

3 0

Make sure that the subtraction is set up in the correct order. We are subtracting -7+2 FROM 2n-1.

(2n-1) - (-7n+2)

Distribute the negative.

(2n-1) + (7n-2)

Combine like terms.

9n - 3

The answer is B.

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How do you solve this math problem-2(x+3y)=18

ss7ja [257]

Greetings!

Solve for <em>x</em>.
$-2(x+3y)=18$
Distribute the Parenthesis. <em>How?</em> Multiply all of the terms inside the parenthesis by the number outside the parenthesis.
$(-2)*x+(-2)*3y=18$
$-2x-6y=18$
Add 6y to both sides.
$(-2x-6y)+6y=(18)+6y$
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Divide both sides by -2.
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The Answer Is:
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Step-by-step explanation:

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Arlecino [84]

Answer:

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Step-by-step explanation:

Retrieving data from the original question:

$f(x)=x^{2}+8\:over\:[-1,4]$

1) Calculating the first derivative

$f'(x)=2x$

2) Now, let's work to find the critical points

Set this

$2x=0\\x=0$

0, belongs to the interval. Plug it in the original function

$f(0)=(0)^2+8\\f(0)=8$

3) Making a table x, f(x) then compare

x| f(x)

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4) The absolute maximum value is 24 at x=4 and the absolute minimum value is 8 at x=0.

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