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3 years ago

Hey guys happy Tuesday ! I need some home work help ASAP work and answer pls love y’all ❤️

Mathematics

1 answer:

Strike441 [17]3 years ago

8 0

1. Multiply 5 by 2 since the piece is twice as long. That is 10.
Multiply 4 by 3 since the piece is 3 times as long. That is 12.
Her piece is 10 x 12.
2 sides of 10 & 2 sides of 12.
Multiply 10 & 12 by 2 to get 20 and 24. Add them together to get 44 inches, which is the perimeter.

2. Multiply 4 x 2 since length is twice width. That is 8.
Multiply 8 x 4 to get the area of the red paper. That is 32.
Multiply 3 x 7 to get the area of the blue paper. That is 21.
Subtract 21 from 32 to get the amount of red paper that wasn't covered up.
11 square cm were not covered up.

Hope this helps!

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Mr.marichal has quarters ,dimes,and pennies in a jar.he has twice as many quarters as oennies.he also has 5 more dimes than penn

liberstina [14]

He has 20 quarters, 15 dimes and 10 pennies.

Step-by-step explanation:

Let,

Quarters = x

Dimes = y

Pennies = z

We know that,

A quarter is 25 cents, dime is 10 cents and penny is 1 cent.

Total amount = $6.60 = 6.60*100 = 660 cents

According to given statement;

25x+10y+z=660 Eqn 1

x=2z Eqn 2

y=z+5 Eqn 3

Putting these values of x and y in Eqn 1

$25(2z)+10(z+5)+z=660\\50z+10z+50+z=660\\61z=660-50\\61z=610\\$

Dividing both sides by 61;

$\frac{61z}{61}=\frac{610}{61}\\z=10$

Putting z=10 in Eqn 2

$x=2(10)\\x=20$

Putting z=10 in Eqn 3

$y=10+5\\y=15$

He has 20 quarters, 15 dimes and 10 pennies.

Keywords: linear equations, substitution method

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago

Lillian had 2 two-liter bottles of soda, which she distributed equally between 10 glasses.

alexgriva [62]

Answers:

a. $\frac{2}{5}$ liters/glass

b. 0.4 liters/glass

c. 400 ml/glass

Explanation:

Part a:

We are given that two bottles each holding 2 liters of soda

This means that the total amount of soda = 2 * 2 = 4 liters

To get the amount of soda in each glass, we will simply divide the amount of soda by the number of glasses (given the number of glasses is 10)

Therefore:

Amount of soda in each glass = $\frac{4}{10} = \frac{2}{5}$ liters/glass

Part b:

We are now asked to express the amount in fraction. The simplest way to do this is to make the denominator a multiple of 10. The number of zeroes in the denominator will be equal to the number of digits after the decimal point

Therefore:

$\frac{2}{5}=\frac{4}{10}=0.4$ liters/glass