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snow_tiger [21]
3 years ago
6

Soulutions for 20-4u

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
3 0

The question seems incomplete

stiks02 [169]3 years ago
3 0

Answer:

u = 5

Step-by-step explanation:

20-4u = 0

4u = 20

u = 5

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If one side of a square is increase by 10 units, the area of the rectangle formed is 3 times the area of the square. Find the ar
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Answer:

75 square units

Step-by-step explanation:

(x+10)x=3x^2

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10x=2x^2

5x=x^2

x=5

Plugging in 5 into either of the initial equations yields the answer.

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3 years ago
What are the solutions to the following system of equations? Select the correct answer below.
Black_prince [1.1K]
(a). 8x + y = 20, where (b). y = x2 - 2x + 4
So where y is in equation (a), substitute in the value of y in (b). 
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Get rid of the 4 on both sides (since what you do to one side, you must do to the other)
8x + 4 - 4 = 20 - 4
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Get rid of the 8 to leave x on its own
8x ÷ 8 = 16 ÷ 8
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So now that you have x, find y but substituting in the value you just found (2) into one of the starting equations. 
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y = 20 - 16 = 4
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5 0
3 years ago
Read 2 more answers
Select the expressions that are equivalent to 4(m+9).
Marianna [84]

Answer:

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Step-by-step explanation:

4(m+9)

4m+9

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3 years ago
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