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GaryK [48]
3 years ago
13

Adelle solved the equation 4x/7 -6= -20 as shown. Fill in the correct justification for each step. [ Look at the picture. Please

only answer if you know the answer to my question. No Plagiarism. Will Mark Brainliest​

Mathematics
1 answer:
grigory [225]3 years ago
7 0

Answer:

2)add both sides by 6

3) multiply both sides by 7

4)divide both sides by 4

Step-by-step explanation:

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System :substitution<br><br> Y=x+9 <br> 3x+8y=-5
OlgaM077 [116]
3x + 8(x + 9) = -5
3x + 8x + 72 = -5
11x + 72 = -5
11x + 72 - 72 = -5 - 72
11x = -77
11x/11 = -77/11
x = -7

All you have to do for this equation is to substitute the y in the second equation with what y equals to. Then you distribute and combine like-terms. 
7 0
3 years ago
Read 2 more answers
Eight less than the product of a number and three (algebraic expression)
PtichkaEL [24]
Answer: 3a - 8

The product of ‘a number’ and 3 could be written as 3 x a or 3a

Eight less than 3a means 3a minus 8 or 3a - 8
8 0
3 years ago
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Which is the outlier in this set of values?<br> 17 20 19 10 15 19 14 0 11 16
Musya8 [376]

Answer:

Zero is the outlier.

Step-by-step explanation:

the rest of the numbers are all two-digit numbers while zero is one digit and farther away on a number line.

hope i helped!

8 0
3 years ago
Given the measures of the sides of a triangle below, which set could form a right
scoray [572]
B.

(9)^2 + (12)^2 = 225

Square root of 225 gives you 15 !!

We found it by applying Pythagorean’s theorem which only applies to right triangles.

Hope it help !!
6 0
3 years ago
A dog owner wants to use 200 ft of fencing to enclose the greatest possible area for his dog. he wants the fenced area to be rec
Fiesta28 [93]
Perimeter (P) = 2 · Length(L) + 2 · Width (W) → P = 2L + 2W
Solve for either L or W (I am solving for L).
200 - 2W = 2L
(200 - 2W)/2 = L
100 - W = L

Area (A) = Length (L) · Width (W)
              = (100 - W) · W
              = 100W - W²

Find the derivative, set it equal to 0, and solve:
dA/dW = 100 - 2W
     0    = 100 - 2W
     W  = 50

refer to the equation above for L: 
100 - W = L
100 - 50 = L
        50  = L

Dimensions for the maximum Area are 50 ft x 50 ft
5 0
3 years ago
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