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arsen [322]
3 years ago
10

Solve x(x−5)+4(x−5)=0, for x.

Mathematics
2 answers:
Anna11 [10]3 years ago
7 0

Answer:

Step-by-step explanation:

x(x-5)+4(x-5)=0

x^2-5x+4x-20=0

x^2-1x-20=0

x^2-1x=-20

x^2=20/-1

x^2=20

square root of x^2=x

x=20

kherson [118]3 years ago
6 0
Here is your answer. Good luck!

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How to simply 7a+3(9+5a)?
makvit [3.9K]
To solve for this, we need to use the Distributive Property, which allows us to multiply the number/variable outside of the parenthesis by all numbers/variables inside of the parenthesis. Once we've done that, we can attempt to simplify the equation.
Our current equation is:
7a + 3(9+5a) = 0
Let's use the Distributive Property.
3(9 + 5a)
3(9) + 3(5a)
27 + 15a
Our current equation now is:
7a + 27 + 15a = 0
Combine like-terms.
15a + 7a = 22a
22a + 27 (If this is not being solved, THIS is your answer as an expression)
Subtract 27 from both sides
22a = -27
Divide both sides by 22 to get a.
a = -27/22.
If we are not solving for a, but getting an expression, your answer is:
22a + 27.
If we are solving for a, our answer is:
a = -27/22.
I hope this helps!
4 0
3 years ago
Which expression is equivalent to 4(7 + 8)?<br><br>A) 11+8<br>B) 11+12<br>C) 28+12<br>D) 28+32​
andreev551 [17]
To do this we take the outlier off the parenthesis (the 4) and multiply it by the two numbers inside the parenthesis...

4*7 + 4*8

28+32
7 0
3 years ago
Read 2 more answers
Graph the given function.
SpyIntel [72]

*<em>The graph has an asymptote at y = 0 and is increasing as x approaches positive infinity.*</em>

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4 0
2 years ago
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SashulF [63]

Answer:

B) 13

Step-by-step explanation:

Average age means to calculate mean:

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Mean = (104)/8

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5 0
2 years ago
15.
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7 0
3 years ago
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