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3 years ago

Find the percent of decrease if 110 is decreased to 88 A) 125% B)80% C)20%

Mathematics

2 answers:

il63 [147K]3 years ago

6 0

C is correct which is 20%

stich3 [128]3 years ago

4 0

Hey there! I'm happy to help!

We have 110 minus a certain percent of 110 equals 88. Let's call this percent p and solve.

110-110p=88

We subtract 110 from both sides.

-110p=-22

We divide both sides by 110.

p=0.2

Therefore, the percent decrease is C) 20%.

Have a wonderful day! :D

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Charlie purchased calculators for his math club after school. The total cost was $325 for 25 calculators. Write an equation to r

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Answer:

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Step-by-step explanation:

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vampirchik [111]

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3 years ago

What is the equation of the line with an x-intercept of -1 and a y-intercept of 2?

iragen [17]

Answer:

y = 2x + 2

Step-by-step explanation:

The general form

is;

y = mx + b

where m is the slope and b is the y-intercept

so we have;

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To get m, substitute the point (-1,0)

So we have

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3 years ago

The combined area of two squares is 45 square centimeters.each side of one square is twice as long as the side of the other .wha

serg [7]

Formula of square area
a = s²
thus, area of the first square could be written as s₁² and area of the second square could be written as s₂²

First, write an expression in the form of equation system
An expression for "The combined area of two squares is 45 square centimeters" is:
⇒ s₁² + s₂² = 45 (first equation)
An expression for "Each side of one square is twice as long as side of the other" is:
⇒ s₁ = 2s₂ (second equation)

Second, solve the equation system by substitution method.
⇒ We could substitute 2s₂ to s₁ (second equation) in the first equation in order to find the value of s₂
s₁² + s₂² = 45
(2s₂)² + s₂² = 45
(2²)(s₂)² + s₂² = 45
4s₂² + s₂² = 45
5s₂² = 45
s₂² = 45/5
s₂² = 9
s₂² = 3²
s₂ = 3

⇒ Substitute the value of s₂ to the second equation in order to find the value of s₁
s₁ = 2s₂
s₁ = 2(3)
s₁ = 6

The length of each side of the larger square is 6 centimeters

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4 years ago

Mt. McKinley, which is the highest elevation in North America, is 20,320 feet above sea level. Death Valley, which is the lowest

Llana [10]

Answer:

20,602 feet is the difference in height between the top of Mt. McKinley and the bottom of the Death Valley.

Step-by-step explanation:

Given:

Mt. McKinley, which is the highest elevation in North America, is 20,320 feet above sea level.

Death Valley, which is the lowest elevation in North America, is 282 feet below sea level.

Now, to find the difference in height between the top of Mt. McKinley and the bottom of the death valley.

Height of Mt. McKinley above sea level = 20,320 feet.

Height of Death Valley below sea level = 282 feet.

Now, to get the difference in height between the top of Mt. McKinley and the bottom of the Death Valley by adding both the heights:

$20320+282$

$=20602\ feet.$

Therefore, 20,602 feet is the difference in height between the top of Mt. McKinley and the bottom of the Death Valley.

5 0

3 years ago