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3 years ago

X+21+3x+9 solve for x

Mathematics

1 answer:

frez [133]3 years ago

7 0

Answer:

This is not an equation. It is an expression, you can't solve for x in an expression

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3 years ago

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3 years ago

What is the distributive property of 6(5-9)

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3 years ago

−9x (5x+4 ) +10 (x+3) can someone please solve his for me thank u step by step please i really need to find out how to do it

Ivahew [28]

Answer:

-45 $x^{2}$ -26x+30

Step-by-step explanation:

So first you let's divide this equation into three parts.

Part one -9x(5x+4)

Step one: you have to distribute the -9x to the numbers in the parentheses. That would leave us with a -9x*5x = -45 $x^{2}$ and -9x*4 = -36x
Step two: Put the answers together. That would leave us with -45 $x^{2}$ -36x.

Part two 10(x+3)

Step one: you have to distribute the 10 to the numbers in the parentheses. That would leave us with a 10*x = 10x and 10*3 = 30
Step two: Put the answers together. That would leave us with 10x+30

Part three solve

Step one: combine and put together what you have solved for. That would leave us with a -45 $x^{2}$ -36x+ 10x+30
Step two: combine like terms. The like terms here are -36x and 10x. When you combine them you would get -26x.
Step three: Write the equation in standard form. Therefore the answer is -45 $x^{2}$ -26x+30.

Let me know if anything is confusing!

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3 years ago

HJ = 18 and MN = 28. Solve for LK

Brut [27]

Answer:

LK = 38

Step-by-step explanation:

MN is the midsegment, and the midsegment is the average length of the top and bottom, so:

$\frac{18 + LK}{2} =28$

solve for LK:

$18+LK=56\\\\LK=38$

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3 years ago

X+21+3x+9 solve for x​

X+21+3x+9 solve for x