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frosja888 [35]
3 years ago
13

Help !! I'm being tired will mark brainlest!!!

Mathematics
2 answers:
Mariulka [41]3 years ago
4 0

Answer: a

it’s multiplication

Evgesh-ka [11]3 years ago
3 0

Answer:

I think it's associative property of multiplication.

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olga nikolaevna [1]
30 ft should be the answer
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Will give brainlyest to the first correct answer! Easy points
xenn [34]

Answer:

its most likely A

Step-by-step explanation:

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Solve the following system of equations.<br> 2x + 5y = -18 and y = -4x
andriy [413]

Answer:

x=1 and y= -4

Step-by-step explanation:

step one: plug -4x into y in thi]e first equation.

2x+5(-4)= -18

step two: solve for x

2x-20= -18

(add 20 to both sides to eliminate -20 on the right)

2x=2

(divide both sides by 2 to get x by its self)

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step 3: now that we found the value for x plug it in to either equation and solve for y

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7 0
3 years ago
Solve the proportion 35/30 = 28/?<br> A. 48<br> B. 23<br> C. 24<br> D. 46
koban [17]

Answer:

C. 24

Step-by-step explanation:

by algebra:

let "?" be x

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35 = (28/x) (30)   (multiply both sides by x)

35x = (28)(30)

35x = 840  (divide both sides by 35)

x = 840 / 35

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6 0
3 years ago
9) y = 7x - 20<br> 3x + 8y = 17<br> For substitution
xenn [34]
X=3
y=1
Use substitution method starting with the first equation substitute y in the second equation

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