Ask question

Ask question

All categories

adelina 88 [10]

3 years ago

7

The length of a rectangle is 4 units less than twice the width. What is the length if the area of the rectangle is 160 square un

its?
Enter your answer as a number, like this: 42

Do not enter any units.

1 answer:

11111nata11111 [884]3 years ago

3 0

A) L = (2*W) -4
B) L*W = 160
B) L = 160/W
Substituting that into A)
160/W = (2*W) -4
160 = 2W^2 -4W
2W^2 -4W-160 = 0
Width = 10
Length = 16

You might be interested in

A pound of chocolate costs 8 dollars. Kala buys p pounds. Write an equation to represent the total cost c that Kala pays.

ASHA 777 [7]

Answer:

8p=c

Step-by-step explanation:

For questions like this, it isn't asking for a numerical answer or anything complicated. It's mainly just using common sense and figuring out what you would do if you had actual numbers instead of variables. You would multiply the amount of pounds (p) by the cost per pound of $8, and that would be your answer (c). I hope I could help.

7 0

3 years ago

A chef has 2 blocks of butter. Each block weighs 1 pound. She cuts each block into fifths

Zepler [3.9K]

She would have 10 blocks of butter each weighing .20 pounds

5 0

2 years ago

To measure the height of a tree, a surveyor walked a short distance from the tree and found the angle of elevation was 43.9°, th

padilas [110]

Answer:

The height of the tree is H = 77.06 m

Step-by-step explanation:

From Δ ABC

AB = height of the tree

$\tan 43.9 = \frac{AB}{BC}$

$\tan 43.9 = \frac{h}{x}$

h = 0.9623 x ------- (1)

From Δ ABD

$\tan 37.6 = \frac{h}{20+ x}$

h = 0.77 (x + 20) ----- (2)

Equating Equation 1 & 2 we get

0.9623 x = 0.77 (x + 20)

0.9623 x = 0.77 x + 15.4

x (0.1923) = 15.4

x = 80.08 m

Thus the height of the tree is given by

H = 0.9623 x

H = 0.9623 × 80.08

H = 77.06 m

Therefore the height of the tree is H = 77.06 m

4 0

3 years ago

shusha [124]

Answer:

Step-by-step explanation:

The range would only include positive integers.

4 0

3 years ago

A driver of a car stopped at a gas station to fill up his gas tank. He looked at his watch, and the time read exactly 3:40 p.m.

mylen [45]

Answer:

2.675

Step-by-step explanation:

3 0

3 years ago