3 years ago

A notebook has a perimeter of 36 inches. It’s area is 80 square inches. What are the dimensions of the notebook

1 answer:

7 0

Let's call he width of the notebook w and the length l

w*l=80

2(w+l)=36
w+l=18
w=18-l

(18-l)*l=80
-l^2+18*l-80=0
l=8 or 10

Therefore, the notebook is 8 by 10 inches

You might be interested in

What is the value of z in 5z=80z*-1/3

Nataliya [291]

The answer to the question is
Z=0

7 0

3 years ago

The distance between two schools,A and B is 2 km.A market is situated a third of the distance from A to B.How far is the market

bekas [8.4K]

Answer:

$\frac{4}{3}$

Step-by-step explanation:

Find distance between B and market: |B-M|=|M-B|

Distance between A and B: $|A-B| = 2$ , call this equation (1)

Distance between A and market $|A-M| = \frac{1}{3} |A-B|=\frac{2}{3}$ , call this equation (2)

Solve (1) - (2)

$|A-B-A+M| = 2-\frac{2}{3} \\|M-B|=|B-M|=\frac{4}{3}$

3 0

2 years ago

PLS I'LL MARK YOU BRAINLIST

expeople1 [14]

so.. the option c is correct

c= -6

8 0

2 years ago

Read 2 more answers

What is the y-intercept of the function f(x) = –2/9 + 1/5

dolphi86 [110]

The equation has no X variable so whatever that adds up to becomes the y-intercept.

- 2/9 + 1/5 >> - 10/45 + 9/45 = - 1/45

Your y-int is - 1/45 or (0, - 1/45)

4 0

2 years ago

Jane noticed as she was doing her morning run that a 12 m flagpole cast a 18 m shadow. A tree was casting a 36 m shadow. The tre

Vika [28.1K]

The tree was 30 meters long

7 0

3 years ago