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4 years ago

Simplify. 3(x-5) -7x

Mathematics

2 answers:

posledela4 years ago

5 0

3(x-5) -7x
Use distributive property
3x - 15 - 7x
Combine like terms
Final Answer: -4x - 15

ira [324]4 years ago

3 0

-4x-15
I think that is the answer

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3 years ago

Find two numbers whose sum is 114 and the difference is 58. (written as an equation please)

diamong [38]

$⇒$

x + y = 114

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Add the equations downward:

2x + 0y = 172

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Answer: The two numbers are 28 and 86.

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3 years ago

A "child has six blocks, three of which are red and three of which are green". How many patterns can shemake by placing them all

makvit [3.9K]

Answer: There are 20 ways and 1680 ways respectively.

Step-by-step explanation:

Since we have given that

Total number of blocks = 6

Number of red blocks = 3

Number of green blocks = 3

So, Number of patterns she can make by placing them all in a line is given by

$\dfrac{6!}{3!\times 3!}\\\\=20$

If there are 3 white blocks

so, total number of white blocks becomes 9

So, Number of total pattern she can make by placing all nine blocks in a line is given by

$\dfrac{9!}{3!\times 3!\times 3!}\\\\=1680\ ways$

Hence, there are 20 ways and 1680 ways respectively.

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