3 years ago

What is the value of n in the equation: 7n +14 = -21? *

Mathematics

2 answers:

eduard3 years ago

6 0

The answer is N = -5

AysviL [449]3 years ago

4 0

Answer:

n= -5

Step-by-step explanation:

im pretty sure thats right

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Use a number line to solve 235-123

Tems11 [23]

The answer is 112 on the number line

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3 years ago

Factor completely<br> -2x^4+6x^3+8x^2

vlada-n [284]

Answer:

-2x²(x + 1)(x - 4)

Step-by-step explanation:

Hello!

Factor:

$-2x^4 + 6x^3 + 8x^2$
$-2x^2(x^2 - 3x - 4)$ Take out GCF

Think: What numbers add up to -3 and multiply to -4?

Answer: -4 and 1

Continue:

$-2x^2(x^2 - 3x - 4)$
$-2x^2(x^2 - 4x + x - 4)$
$-2x^2(x(x - 4) + 1(x - 4))$ Factor by Grouping
$-2x^2(x + 1)(x - 4)$

The complete factored form is -2x²(x + 1)(x - 4)

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2 years ago

bill can paint a room in 6 hours, but bills father could do it in four. if the two work together, how long would it take them to

aleksley [76]

Answer:

3 hrs thats my anwser

Step-by-step explanation:

brainliest if right

3 0

4 years ago

A hall has 22 rows of chairs there are 18 chairs in each row how many extra rows of chairs are needed to seat 468

Alex

Answer:

Total chairs = 18×22= 396

so no. of extra chairs need = 468-396 = 72

Now( 72/18) rows = 4 rows

Therefore 4 more rows are needed here

Hope it helps you

7 0

3 years ago

Read 2 more answers

in the figure below cef is an equilateral triangle. points b,c and e are collinear;points a,c and f are collinear; g=40 degrees

Serhud [2]

The answer is 80 degrees hope it helps

6 0

3 years ago