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3 years ago

The sum of two numbers is 36 . one number is 3 times as large as the other. what are the numbers?

1 answer:

8 0

X= one number
3x= the other number

Add the two numbers together.

x + 3x= 36
4x= 36
x= 9

Other Number
=3x
=3(9)
=27

ANSWER: The numbers are 9 and 27.

Hope this helps! :)

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80% of what(?) games is 32 games..?

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Answer=40 games

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80% 100%

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divide both sides by 80
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Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

6 0

2 years ago

Which is the equation of a line parallel to the line with the equation y= 1/4x +2

natta225 [31]

Answer:

Any line with slope 1/4 like y=1/4x -5.

Step-by-step explanation:

Parallel lines never cross and therefore have the same exact slope. Since slope intercept form is y=mx+b and m is slope, then y=1/4x+2 has a slope of 1/4. Any line with a slope of 1/4 will be parallel. Example: y=1/4x - 5

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2 years ago