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3 years ago

Which of the following represents "the difference between a number and eight is twenty-two"?

Mathematics

1 answer:

velikii [3]3 years ago

6 0

30(or x)-8=22 I don't know if that is one of the answers or not

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What is 31 100 simplified

ElenaW [278]

$\frac{31}{100}$ is already simplified because 31 is a prime number. A prime number has two factors, one and the number itself.

6 0

3 years ago

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To drive safely along a road, drivers need to maintain a speed of at least 50 miles per hour and at most 60 miles per hour. Writ

inessss [21]

3000 is the maximum speed

4 0

3 years ago

five percent of a batch of fuel was found faullty if 27 fuses were faulty how many were inspected the price of internet service

LenKa [72]

There are 540 fuses in total and the original price of the internet is $55.91

<h3>How to work with percentages?</h3>

a) We know that 5% of the fuses are faulty, and there are 27 faulty fusses, then we can write:

5% = 27

100% = x

We want to find x, to do that, we can write:

x = 27*(100%/5%) = 27*20 = 540

There are 540 fuses in total.

b) Now we know that the original price is P, and when we decrease it by 7%, then new price is $52.00

Then we can write:

$52.00 = P*(1 - 7%/100%)

$52.00 = P*(0.93)

$52.00/0.93 = P = $55.91

The original price is $55.91

If you want to learn more about percentages:

brainly.com/question/843074

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8 0

3 years ago

A rectangle is 4 times as long as it is wide. The perimeter of a rectangle is 50 cm. What are the dimensions of the rectangle?

marissa [1.9K]

We use the equation 2x+8x=50.

10x=50
x=5

The rectangle will be 20 cm long and 5 cm wide.

Hope this helps!

7 0

3 years ago

Read 2 more answers

System of equations 9x+8y=-19 ; 7x+9y=-12

klasskru [66]

Answer:

(-3,1)

Step-by-step explanation:

9x+8y=-19

7x+9y=-12

I'll assume the question is to find the solution to these equations. The solution will be the point (x,y) where the two lines intersect. The intersection is the one point that satisfies both equations (the smae value of (x,y) works in both.

We can either solve matematically of graph to find the intersection. I'll do both, and hope the answers are identical.

Matematically

Rearrange either equation to isolate one of the variables (either x or y). I'll take the second and isolate x:

7x+9y=-12

7x = -9y - 12

x = (-9y - 12)/7

Now use this definition of x in the other equation:

9x+8y=-19

9((-9y - 12)/7) + 8y = -19

(-81y - 108)/7 + 8y = -19

-81y - 108 + 56y = - 133

-25y = -25

y = 1

If y = 1, then:

9x+8y=-19

9x+8(1)=-19

9x = -27

x = -3

The solution is (-3,1)

Graphing

Graph both lines and look for the intersection. The attached graph shows the lines cross at (-3,1).

The solution, bu both approachjes, is (-3,1)

6 0

2 years ago