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pogonyaev
3 years ago
12

Drew bought a chemistry book for $30. Later that book was marked down by 20%. By how much has that value been decreased? Btw ple

ase show work.
Mathematics
2 answers:
Fed [463]3 years ago
5 0
30 over 100 times 20= 6
so it decreased by 6 dollar
Ugo [173]3 years ago
4 0
<u>Solution:</u>

30 - (30*0.80) = 30 - 24 = 6

or you can do

30 * 0.20 = 6
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Question 1
777dan777 [17]

Answer:

There would be 94 tiles.

Step-by-step explanation:

The number of tiles is given by the following equation:

n = 6 + 4p

In which p is the current position.

How many tiles would there be in position 22?

This is n when p = 22. So

n = 6 + 4*22 = 6 + 88 = 94

There would be 94 tiles.

8 0
3 years ago
Camison's minnan gets 14 miles per gallon for city driving and 19 miles per gan
loris [4]

Answer:

<u>7 gallons were used for city driving and 17 gallons were used for highway driving</u>

Correct statement and question:

camison's minnan gets 14 miles per gallon for city driving and 19 miles per gallon for highway driving. At the beginning of the week, the 24-gallon tank was full. The family traveled 421 miles before running out of gas. How many gallons were used for city driving and  how many were used for highway driving?

Source:

Previous question found at brainly

Step-by-step explanation:

x = Gallons for city driving

24 - x = Gallons for highway driving

Miles drove before running out of gas = 421

Now let's solve for x, writing the following equation:

14x + 19 (24 - x) = 421

14x + 456 - 19x = 421

-5x = 421 - 456

-5x = - 35

x = -35/-5

x = 7 ⇒ 24 -x = 17

<u>7 gallons were used for city driving and 17 gallons were used for highway driving</u>

3 0
3 years ago
Sup community simplify this in 5 mins −5·(−a)·(−a)·(−4)·a thx 4 help!!!!1111!!!1!111
liraira [26]

Answer:

20a³

Step-by-step explanation:

Simply multiply:

-5(-4) = 20

-a(-a)(a) = a²(a) = a³

20a³

6 0
3 years ago
Read 2 more answers
Rafael must choose a number between 67 and 113 that is a multiple of, 2,4, and 5 . Write all the numbers that he could choose.
skelet666 [1.2K]
First, find out what the greatest common factor is between 2, 4, and 5. 

<span>This is 20. So any number divisible by 20 is also divisible by 2, 4, and 5. </span>

<span>Now we find the list of numbers that are multiples of 20 between 67 and 113. </span>

<span>The solutions are: </span>

<span>80 and 100.</span>
5 0
4 years ago
Abble is going out for pizza with her friends. For $60 total, they can buy p pizzas. Each
miskamm [114]

Answer:

Step-by-step explanation:

if Abble buy pizzas for 60 dollars

60/12=5

he can buy 5 pizzas

p=5

4 0
3 years ago
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