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3 years ago

9

{ 5x - y = 5 { 5x - 3y = 15 solve the system using substitution

2 answers:

Iteru [2.4K]3 years ago

8 0

Answer:

Not sure sorry,but can you please help me on the following:

Step-by-step explanation:

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the squares share one side with the rectangle. The total area of the constructed figure is 120 cm2. What is the perimeter of the rectangle?

yulyashka [42]3 years ago

5 0

Answer:

Step-by-step explanation:

How nice question 7s it

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It take Mr. Branches 5 hours to rake the leaves. If his son joins him in the work, they can rake the leaves in 3 hours. How long

insens350 [35]

Answer: 7 $\frac{1}{2}$ hours

<u>Step-by-step explanation:</u>

Dad: $\frac{1}{5}$

Son: $\frac{1}{x}$

Together: $\frac{1}{5}$ + $\frac{1}{x}$ = $\frac{1}{3}$

$\frac{1}{5}$ (15x) + $\frac{1}{x}$ (15x) = $\frac{1}{3}$ (15x)

3x + 15 = 5x

<u> -3x </u> <u>-3x </u>

15 = 2x

<u> ÷2</u> <u>÷2 </u>

7.5 = x

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3 years ago

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What is equation of the following line ?

scZoUnD [109]

Answer:

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Step-by-step explanation:

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3 years ago

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5 to the power of 2 subtracted by 2 and added by 7

QveST [7]

Answer:

30

Step-by-step explanation:

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3 years ago

Solve the inequality and graph <br>2(-6n-5)<-3(4n+2)<br>thanks!

Mekhanik [1.2K]

Answer:

All real numbers are solution for the inequality.

Step-by-step explanation:

Given expression:

$2(-6n-5)$

Solving the inequality.

Using the distribution.

$(2(-6n))+(-2(-5)$

$-12n-10$

Adding $12n$ to both sides.

$-12n+12n-10$

We have,

$-10$

The above statement is always true and thus the inequality has all real number solutions.

The number line graph for the inequality can be shown.

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3 years ago

A lamp pole with a height of 10 ft casts a shadow of 3 ft. What is the height of a building that casts a shadow of 15 ft at the

seraphim [82]

Answer:

4.5

Step-by-step explanation:

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3 years ago