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Scilla [17]
2 years ago
7

Five notebooks cost $20 at this rate how much would 4 notebooks coat?

Mathematics
2 answers:
Andrews [41]2 years ago
7 0

Answer:

16

Step-by-step explanation:

$20/5notebooks=$4 each

4$*4notebooks=16$

vagabundo [1.1K]2 years ago
3 0

Answer:

$16

Step-by-step explanation:

if 5=20 then 20÷5=4 and 4x4=16

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Zola is thinking of a number. If the number is divided by 7.5, the quotient is 62. what is zolas number?
____ [38]
Okay, so I would multiply 62*7.5 to get 465.

To check the solution, make sure it follows the rules as in the word problem.

If you divide 465 by 7.5 you do get 62, so the solution is 465.

Mathematically, the equation would be

x
-     = 62
7.5
I would multiply x/7.5 by 7.5/1 (to cancel it out) and 62/1  by 7.5 which is basically the same solution as above.

4 0
3 years ago
Read 2 more answers
There are 412 students and 20 teachers taking buses on a trip to a museum. Each bus can seat a maximum of 48. Which inequality g
marissa [1.9K]

Answer:

10  buses are needed.

9  buses will only be able to take 468 people.

Explanation:

There are  461  +  20  =  481  people altogether needing transport.  Each bus can take at most 52 people.  The number of buses needed =   482  ÷  52. 482  ÷  52  =  9.25  buses.  You might be tempted to round down to 9 buses (because of the 2 that follows the decimal)  However, if there are 9 buses,   9  ×  52  =  468  people can be taken  There will still be   13  people to be transported.  This is an example of where you need to round UP to the next whole number.   10  buses are needed.  In reality it means that not all the buses will be full, but 10 buses are needed to ensure that everyone gets a ride to the museum.

7 0
3 years ago
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What are the roots of the equation x 2-10x+21=0
horrorfan [7]
So factoring this would be:
(x-7)(x-3)
so the solution set is 
{7, 3} 
I'm not sure if this is what you were asking, if it wasn't, I'll edit it.
3 0
3 years ago
12) The product of three integers x, x + 2, and x – 5 is 240? What are the integers?
Alexxx [7]

Answer:

D.

Step-by-step explanation:

x(x+2) (x-5) -240

put that on a graph calculator and the x=8

x=8

x+2=10

x-5=3

7 0
2 years ago
The solution of absolute value equation I x - 4 | =6 is...
marin [14]
Can I get brainliest ?
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2 years ago
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