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3 years ago

The length of a rectangle is five times the width. Find the AREA of the rectangle if the perimeter is 72

Mathematics

1 answer:

iren2701 [21]3 years ago

5 0

Answer:

180cm²

Step-by-step explanation:

Width = x

Length = 5x

x + x + 5x + 5x = 12x

72/12 = 6

x = 6

Width = 6

Length = 30

6 x 30 = 180cm²

*Please put your answer to the right unit (e.g. m, cm, etc.)

Please mark as Brainliest, thank you!

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Y is inversely proportional to x, when Y = 2, x = 4.

irina [24]

Answer:

Constant of proportionality is y divided by x. y is 2 and x is 4. 2 divided by 4 is 1/2.

Let me know if that is correct.

Step-by-step explanation:

6 0

3 years ago

I’m confused someone explain please

Naya [18.7K]

Answer:

3(x - 12)(x + 2)

Step-by-step explanation:

Given

3x² - 30x - 72 ← factor out 3 from each term

= 3(x² - 10x - 24) ← factor the quadratic

Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (- 10)

The factors are - 12 and + 2 , since

- 12 × 2 = - 24 and - 12 + 2 = - 10 , thus

x² - 10x - 24 = (x - 12)(x + 2) and

3x² - 30x - 72 = 3(x - 12)(x + 2)

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2x%7D%20%2B%2012%20%3D%20x%20%2B%208%20" id="TexFormula1" title=" \sqrt{2x} + 12

Helga [31]

First note that $x\ge0$ ; otherwise $\sqrt{2x}$ is undefined as long as we're only looking for real solutions.

We can write

$\sqrt{2x}+12=x+8$
$\sqrt{2x}=x-4$
$2x=(x-4)^2$
$2x=x^2-8x+16$
$x^2-10x+16=0$
$(x-8)(x-2)=0$

$\implies x=8,x=2$

4 0

3 years ago

The graph of f(x) = x2 is shifted 3 units to the right to obtain the graph of g(x). Which of the following equations best descri

alexgriva [62]

Answer:

$g(x)=(x+3)^2$

Step-by-step explanation:

$f(x) = x^2$

The graph is shifted 3 units to the right

$(x+3)^2$

$g(x)=(x+3)^2$

5 0

3 years ago

Read 2 more answers

Can someone help me please?

Molodets [167]

-2 should be correct. It is an input for that given graph.

5 0

3 years ago