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3 years ago

Please help no links

Mathematics

1 answer:

Nina [5.8K]3 years ago

8 0

Answer:

x=5 y=-6

Step-by-step explanation:

3x+y=9 ------eqn1

y=4-2x -------eqn2

using substitution

put y=4-2x into eqn1

3x+4-2x=9

x=5

put x=5 into eqn2

y=4-2(5)

y=4-10

y=-6

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Steps to solve: 28x - 12 + 2x - 4 - x

Musya8 [376]

Let's simplify by step

28x-12+2x-4-x

28x+-12+2x+-4+-x

Combine like terms

28x+-12+2x+-4+-x

(28x+2x+-x)+(-12+-4)

29x+-16

= 29x-16

I hope that's help !

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3 years ago

A store manager paid $95 for an item and set the selling price at $116.85. What was the percent markup?

Neporo4naja [7]

We have been given that a store manager paid $95 for an item and set the selling price at $116.85. We are asked to find the percent mark-up.

We will use percent increase formula to solve our given problem.

$\text{Percent increase}=\frac{\text{Final}-\text{Initial}}{\text{Initial}}\times 100\%$

$\text{Percent increase}=\frac{\$116.85-\$95}{\$95}\times 100\%$

$\text{Percent increase}=\frac{\$21.85}{\$95}\times 100\%$

$\text{Percent increase}=0.23\times 100\%$

$\text{Percent increase}=23\%$

Therefore, the mark-up will be 23% and option 'b' is the correct choice.

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3 years ago

The height of Mountain Pis 1,086 feet. The height of Mountain Q is 4 times the

Afina-wow [57]

Answer:

4,344 feet

Step-by-step explanation:

Mt. P is 1,086 feet tall. It says that Mt. Q is 4 times that. 1,086 x 4 is 4,344.

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2 years ago

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dem82 [27]

Answer:

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Step-by-step explanation:

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4 years ago

HELP ME OUT WITH THIS PLEASE I GIVE BRAINLIST and 100 points ❤️

Harman [31]

Answer:

incorrect length is 12.5

actual length is 11

12.5-11

1.5

1.5/12.5 ×100

20%

Step-by-step explanation:

hope it helps

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3 years ago

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