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Andre45 [30]
3 years ago
15

Can I solve i dunno it :)​

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
5 0
How Long Is The Book?

550 pages.

Its 550 pages, because if you know that he reads 55 pages an hour, then you can multiply the number of pages her reads in an hour by 4 hours. That's 220. Then he will still need 330, just add them together and you will get 550.

How Long Did It Take Naoya to read the entire book?

10 hours.

You know it takes him 4 hours to read 220, and you also know there's 550 pages. And you also know, he can only read 55 pages an hour, so just divide 550 ÷ 55.
MatroZZZ [7]3 years ago
3 0
1. 550 pages left

55×4=220+330=550

2. 10 hours

330÷55=6+4=10
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Evelyn has $524.96 in her checking account. She must maintain a $500 balance to avoid a fee. She wrote a check for $32.50 today.
postnew [5]

Answer:

You answer would be $7.54

Step-by-step explanation:

You need to subtract 32.50 from 524.96. That would be 492.46. Then subtract 492.46 from 500. Hope that helps!!

4 0
3 years ago
−4x+7y=20<br> y=3x+15<br> ​Solve the system of equations.
Dmitry_Shevchenko [17]

Answer:

(x, y)=(-5, 0)

5 0
3 years ago
I need help on this, if anyone knows how to do this can you help me out pls
ASHA 777 [7]
<h3>Answer:  (3, 0)</h3>

=================================================

Explanation:

Let's isolate x in the first equation.

x-2y = 3

x = 3+2y

Then we'll plug this into the second equation

Afterwards, solve for y.

2x + 4y = 6

2(3+2y)+4y = 6

6+4y+4y = 6

8y+6 = 6

8y = 6-6

8y = 0

y = 0/8

y = 0

Use this to find x.

x = 3+2y

x = 3+2(0)

x = 3

The solution is therefore (x,y) = (3, 0)

If you were to graph both lines, then they would intersect at the location (3,0).

-----------------------------

Checking the answer:

Plug x = 3 and y = 0 into the first equation.

x-2y = 3

3-2(0) = 3

3 - 0 = 3

3 = 3 that works

Repeat for the other equation

2x+4y = 6

2(3) + 4(0) = 6

6 + 0 = 6

6 = 6 that works as well

Both equations are true when (x,y) = (3,0).

The solution is confirmed.

6 0
3 years ago
What is the mean and MAD of 12,16,15,11,31
Dmitry_Shevchenko [17]

Answer:

The mean is 17.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which set of numbers may represent the lengths of the sides of a triangle?
Nataly [62]

Answer:

B. (5,12,13)

Step-by-step explanation:

The only answer with two side lengths that are greater than the largest side length.

3 0
2 years ago
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