the length of a rectangle is 4cm langer than the width. the perimeter is 80cm. what is the length and the width?

1 answer:

4 0

Let us assume the width of the rectangle = x cm
Then
The length of the rectangle = (x + 4) cm
It is already given that
Perimeter of the rectangle = 80 cm
Now we also know the formula for perimeter of a rectangle
Perimeter = 2 ( length + width)
80 = 2 (x + 4 + x)
80 = 2 (2x + 4)
80/2 = 2x + 4
40 = 2x + 4
Dividing both sides by 2 we get
20 = x + 2
20 -2 = x
x = 18
Then
Width of the rectangle = 18 cm
Length of the rectangle = (18 + 4) cm
= 22 cm
So the rectangle has a length of 22 cm and a width of 18 cm.

You might be interested in

PLEASE HELP THIS IS OVERDUE PLEASEEEE

notsponge [240]

Difference of squares makes (x+3)(x-3)/(x+3)
The x+3’s cancel out
Answer is x-3

8 0

3 years ago

viva [34]

Please read "Step-by-step" if you're having trouble

Answer:

x²(1- $\frac{1}{4}$ $\pi$ )

Step-by-step explanation:

Each side of the cookie dough is x long, since there is no given number, the diameter of the plate is also x, its as long as the square is wide, making the radius 1/2x.

The area of the cookie dough is x², the area of the plate is 1/4 $\pi$ x².

You have the equation x²- $\frac{1}{4}$ $\pi$ x²the equation has a Greatest Common Factor of x² so your factored equation is x²(1- $\frac{1}{4}$ $\pi$ )

8 0

4 years ago

HELP IS APPRECIATED <3

Lemur [1.5K]

Answer:

x = -7

Step-by-step explanation:

1/2x - 3 = 3/2x + 4

~Add 3 and subtract 3/2x to both sides

-1x = 7

~Divide -1 to both sides

x = -7

Best of Luck!

6 0

4 years ago

Definition population of a town is 4,300, and it grows with a doubling time of 10 years. What will the population be in 8 years?

alexgriva [62]

The population of the town would be 6450.

8 0

4 years ago

What is the maxium number of right angles that can be contained in a triangle

alekssr [168]

Answer:

Step-by-step explanation:

A triangle can only have one right angle.

3 0

2 years ago