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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PLEASE HELP ME WITH THIS QUESTION ITS URGENT!!!

Alex Ar [27]

Start by distributing the exponent to each of the terms in $(2u)^{3}$ . This will become $2^{3} u^{3}$ , and $2^{3} =8$ . Now, the expression is:

$\frac{2u^{3} v^{2} }{8u^{3} * u^{2} }$ .

We can now simplify the bottom to read: $8u^{5}$ because when multiplying variables raised to an exponent, we add the exponents. The expression now looks like:

$\frac{2u^{3} v^{2} }{8u^{5} }$

The 2/8 simplifies to 1/4:

$\frac{u^{3} v^{2} }{4u^{5} }$

Now, we have two u terms on the top and bottom. When dividing variables raised to an exponent, we subtract the exponents. However, since 3-5=-2, the term will be on the bottom to avoid the negative exponent. The final answer is:

$\frac{v^{2} }{4u^{2} }$