PLEASE HELP ITS DUE TONIGHT, IM CONFUSED

Mathematics

2 answers:

djverab [1.8K]3 years ago

7 0

Perimeter = (x+2) + x + (x+2) + x
Perimeter = 4x + 4

Area = x(x+2)
Area = x^2 + 2x

wlad13 [49]3 years ago

7 0

Answer:

this may or may not help ya :/

<em>perimeter of a rectangle = 2 × ( length + breadth)</em>

= 2 ×( x + 2 + x )

= 2 ( 2x + 2)

= 4x + 4 units

<em>area of a rectangle = length × breadth </em>

= (x + 2) × x

= x² +2x Sq. units

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Paul can install a 300 hundred square foot hardwood floor in 18 hours. Matt can install the same floor in 22 hours. How long wou

Vadim26 [7]

ANSWER

Paul and Matt will take
$9.9 \: \: hours$
to install the floor working together.

EXPLANATION

First, calculate Paul's rate, which is

$= \frac{1}{18}$

Next, calculate Matt's rate, which is,
$= \frac{1}{22}$

Let us assume that, Paul and Matt took
$x \: hours$
to do the work together.

Then, the rate of working together is,

$= \frac{1}{x}$

Now, add the individual rates and equate to the rate of working together to form an equation that will help us solve for x.

$\frac{1}{18} + \frac{1}{22} = \frac{1}{x}$

Simplify the left hand side

$\frac{11 + 9}{198} = \frac{1}{x}$

$\frac{20}{198} = \frac{1}{x}$

We reciprocate both sides to get (You could have also done cross multiplication).

$\frac{198}{20} = \frac{x}{1}$

$x = 9.9 \: hours$