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3 years ago

Please answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Mathematics

1 answer:

Anna11 [10]3 years ago

4 0

Answer:

1 and 2 are rectagles and 3 is not

Step-by-step explanation:

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Consider the given rectangle with heightequals4timeswidth. Let x be the width of the rectangle. Write an expression for the per

Salsk061 [2.6K]

Answer:

<h3>The expression for the perimeter P is $P=\frac{784+h^2}{2h}$ feet.</h3><h3> Area=49=lx square feet ( here $x=\frac{h}{4}$ )</h3>

Step-by-step explanation:

Given that rectangle with height equals 4times width.

It can be written as

$h=4\times width$

Let x be the width of the given rectangle

Therefore $h=4\times x$

$h=4x$

$\frac{h}{4}=x$

Rewritting the above equation we get

$x=\frac{h}{4}$

<h3>To write an expression for the perimeter P of the given rectangle :</h3>

Also given that area of the rectangle is 49 square feet.

Area=49 square feet.

We know area of rectangle = lw square units.

<h3>Therefore area=49=lx square feet ( here area=49 and w= $x=\frac{h}{4}$ )</h3>

Rewritting we get

lx=49 square feet.

$l=\frac{49}{x}$

$=\frac{49}{\frac{h}{4}}$

$l=\frac{49\times 4}{h}$

<h3> $l=\frac{196}{h}$ feet</h3><h3>Perimeter P $=2(l+w)$ units </h3>

$P=2(\frac{196}{h}+\frac{h}{4})$

$P=\frac{2(196)}{h}+\frac{2(h)}{4}$

$=\frac{392}{h}+\frac{h}{2}$

$=\frac{392(2)+h^2}{2h}$

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3 years ago

WILL MARK BRAINLIEST (50 PTS)

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How do u subtract (3x+5y-4)_(4×+11)

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If x square plus y square is equals 80 and xy is equals 12,find the value of (x-y)square

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