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Naya [18.7K]
2 years ago
13

Which expression is equivalent to -5(2n - 4) + n?

Mathematics
1 answer:
ser-zykov [4K]2 years ago
8 0

Answer:

A. -9n + 20

Step-by-step explanation:

First, distribute -5 to all terms within the parenthesis:

-5(2n - 4) + n

(-5 * 2n) + (-5 * -4) + n

-10n + 20 + n

Simplify. Combine like terms:

(-10n + n) + 20

(-9n) + 20

A. -9n + 20 is your answer.

~

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How to solve 8/x^2-1=6/x+1
NARA [144]
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3 years ago
What is 7 and 1/2 minus 3/4
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Answer:

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8 0
2 years ago
30 points pls helppp
Phoenix [80]

Answer:

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Step-by-step explanation:

from equation,

y - y1 = m( x - x1)

given x1=2, y1= -1

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substitute

y - (-1) = 3( x - 2)

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3 0
2 years ago
The range of the function f(k) = k2 + 2k + 1 is {25, 64}. What is the function’s domain? {5, 8} {-5, -8} {3, 8} {4, 7} {4, 8}
Savatey [412]
The range is the ouutput from inputing the input
basically
25=k²+2k+1 and 64=k²+2k+1
the values that satisfy both equations (not at the same tim) are the valuess that are the domain
solve each
25=k²+2k+1
minus 25 both sides (or recognize the perfect square trinomial, but anyway)
0=k²+2k-24
factor
0=(k+6)(k-4)
set to zero
k+6=0
k=-6
k-4=0
k=4
k=-6 or 4

64=k²+2k+1
minus 64 both sides
0=k²+2k-63
facor
0=(k-7)(k+9)
set to zer
k-7=0
k=7
k+9=0
k=-9
k=-9 or 7



so the domain has the numbers
-9,-6,4,7
it seems we only want the positive square roots so
answer is {4,7} is the domain
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3 years ago
Who would be taller kim 56.03 or alexa 56.3
erma4kov [3.2K]
I think Alexa would be since .3 is a larger number than .03
8 0
3 years ago
Read 2 more answers
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