3 years ago

(5x3)+(nx4)=5(3+4) is what

Mathematics

1 answer:

shepuryov [24]3 years ago

8 0

(5*3)+(n*4)=5(3+4)=?
15+4n=15+20
4n=15+20-15
4n=20
n=5

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Lilit [14]

Your answer is 110/119

11/17 Divided By 7/10

11 * 10

17 * 7

110/119

That number can't be simplified, so that is your final answer.

Best of luck,

- Ari -

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3 years ago

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The perimeter of a rectangular field is 328 yards. If the length of the field is 89 yards, what is its width?

miv72 [106K]

Set up an equation based on the information given

$89 + 89 + x + x = 328$

Combine like terms

$89 + 89 = 178$

$x + x = 2x$

$2x + 178 = 328$

Solve

$2x + 178 = 328$

$328 - 178 = 150$

$2x = 150$

$x = 75$

Answer

The width of the rectangular field is 75 yards.

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3 years ago

which ordered pair (x,y) is a solution to the given systems of linear equations? 3x+3y=-3 and -2x+y=2

Ulleksa [173]

3x+3y=-3
divide both sides by 3 for ease
x+y=-1

now eliminate x's
multiply that equation by 2 and add to other one

2x+2y=-2
-2x+y=2 +
0x+3y=0

3y=0
y=0

x+y=-1
x+0=-1
x=-1

(x,y)
(-1,0)

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3 years ago

Find the length of side x in simplest radical form with a rational denominator.

kaheart [24]

Answer:

We want x
We have a 30-60-90 triangle
So we get
$2 \sqrt{3}$

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3 years ago

Mike paid 2.94 in sales tax on an item that cost 42.00 before tax. At that rate how much would he pay in sales tax for an item t

Masteriza [31]

$4.06 in sales tax before tax for $58
7% of $42 = 2.94
7% of $58 = 4.06

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3 years ago

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