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Alinara [238K]
3 years ago
13

Five books cost¢21. what is the price cost of seven similar books​

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
5 0

Answer:

Your answer should be $29.40

Step-by-step explanation:

If you divide 21 by 5 you get 4.2, so each book costs $4.20.

4.2 x 7 = 29.4

Therefore, your total cost for 7 books will be $29.40

I hope this helps!

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Find area and perimeter​
alisha [4.7K]

Answer:

Perimeter

P = P1+P2

P1 = 4a           P2=2(a+b)

P1=4*5           P2=2(3+5)

P1=20            P2=2*8

                     P2=16

P = 20+16

P=36

Area

A=A1+A2

A1=a^{2}                 A2=a*b

A1=5^{2}                 A2=3*5

A1=25                A2=15

A=25+15

A=40

5 0
3 years ago
I will mark you the brainiest for the correct answer, please be correct, Have a good day and take care, thanks. ( VIEW THE IMAGE
Gwar [14]
First error is that the legs are a and b so a should be x and b is 6 and c is 10 the second error is at the end they did not take the square root to get x by itself the real answer should be
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X^2 =64
X=8
6 0
3 years ago
The order pairs (1, 2), (2, 5), (3, 10), (4, 17), and (5, 26) represent a function. what is a rule that could represent this fun
LenaWriter [7]
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3 years ago
Twenty different books are to be put on five book shelves, each of which holds at least twenty books.
lapo4ka [179]
Hello There!

The total number of different arrangements is 10,628.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
8 0
3 years ago
Peter has $40.25 in his piggy bank. The amount is made up of an equal number of four coins. The coins could be 1c, 10c, 5c, 25c,
Crazy boy [7]

Answer:

Step-by-step explanation:

It’s made up of the 1 dollar coin , .50 cents coin, .25 cents coin, and the .10 cents coin. If you multiply each by 25 you get the exact value , so these coins make it up but there is exactly 25 of each

7 0
3 years ago
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