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2 years ago

A rectangle is three times as long as it is wide if it's perimeter is 56cm.find the width of the rectangle

Mathematics

2 answers:

Zina [86]2 years ago

5 0

the length is 3W cm. THerefore, the perimeter is 2*(3W + W) = 8W = 56 So W = 7 cm.

Nataliya [291]2 years ago

3 0

Answer:

I'm answering the question that u have posted in comment.

Step-by-step explanation:

let the age of her daughter be x

now,

3x-6=36

3x=36-6

x=30/3

x=10

so, the age of her daughter is 10years.

hope it helps.

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$=\displaystyle2\int_{u=0}^{u=2\pi}\int_{v=0}^{v=3}(v^2+4)\,\mathrm dv\,\mathrm du+\int_{r=0}^{r=2}\int_{\theta=0}^{\theta=2\pi}r^3\,\mathrm d\theta\,\mathrm dr+\int_{r=0}^{r=2}\int_{\theta=0}^{\theta=2\pi}r(r^2+9)\,\mathrm d\theta\,\mathrm dr$
$=\displaystyle4\pi\int_{v=0}^{v=3}(v^2+4)\,\mathrm dv+2\pi\int_{r=0}^{r=2}r^3\,\mathrm dr+2\pi\int_{r=0}^{r=2}r(r^2+9)\,\mathrm dr$
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7 0

3 years ago

kenny6666 [7]

<span>△PQR is similar to △STU

</span>m∠R = m∠U = 96°

m∠Q = m∠T = 6

m∠P = 180 - ( 96 + 6)

m∠P = 180 - 102

m∠P = 78

answer

m∠P = 78

7 0

3 years ago

Read 2 more answers