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3 years ago

-3(x+n)=x solve for x

Mathematics

1 answer:

garik1379 [7]3 years ago

3 0

Answer: x = (-n/2)

Step-by-step explanation:

-3(x+n)=x Problem:

-3x-n=x Distributive property

-n=2x Add 3x to both sides

2x=-n Switch equation around to make it easier to look at

x= -n/2 Divide by 2 on each side

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Step-by-step explanation:

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3 years ago

The area of a trapezium is 800 cm2

svlad2 [7]

Answer:

The distance between the parallel sides is 20cm.

Step-by-step explanation:

Area of a trapezoid:

$A=\frac{a+b}{2}\times h$

where a and b are the 2 bases, and h is the height. The value we're trying to find here is the height.

3 of the 4 variables in this equation are already given:

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a = 48

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Just plug those in and solve for h:

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viktelen [127]

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3 years ago

A bag contains nine red balls, four green balls, and fifteen yellow balls. What is the probability of pulling out one red ball?

Aleksandr [31]

Answer:

32.1%

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Step-by-step explanation:

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3 years ago

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