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olasank [31]
4 years ago
9

Mary is preparing for her college entrance exams in a practice test she answered 12 problems in 30 minutes at this rate how many

questions can she expect to answer in 100 minutes
Mathematics
1 answer:
kap26 [50]4 years ago
6 0

Answer:

40 problems in 100 minutes

Step-by-step explanation:

This is a ratio problem.

You first divide 30 minutes by three to get how many problems she can do in 10 minutes. What you do to one side you do to the other side. So then, you should have 4 problems in 10 minute. Then, you multiply 10 by 10 and 4 by 10 to get 40 problems in 100 minutes.

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You have to pay to fix the sink. They are charging you $75 for parts and
Alika [10]

Answer: y = 20x+75

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

The cost (y) must be equal to the product of the cost per hour of installation (20) and the number of hours that it takes (x); plus the fixed cost of parts and installation (75).

Mathematically speaking:

y = 20x+75

Feel free to ask for more if needed or if you did not understand something  

4 0
3 years ago
Two angles are vertical. One angle is by degrees and the other angle
Liono4ka [1.6K]

Answer:

Supplementary angles are two angles whose measures add up to 180 degrees. ... Supplementary angles are two angles whose measures add up to 180° . The two angles of a linear pair , like ∠1 and ∠2 in the figure below, are ... If the measure of the angle is twice the measure of the other, find the measure of each angle.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Teaser has 38 point she divides the coins equally among her self and her three brothers how many coins does each person get are
Serhud [2]

Answer:

Each person including Teaser will get 9.5 coins.

Step-by-step explanation:

Teaser has 38 points

There is

-Brother 1

-Brother 2

-Brother 3

-Teaser

38 divided by 4

= 9.5

Therefor each will get 9 1/2 coins.

Please leave a good rating if this helped :)

-Adam

7 0
4 years ago
20<br> X<br> 40°<br> solve for x
kirza4 [7]
Could you please formulate you answer better? So we can get a bette understanding
8 0
3 years ago
Solve for x, Show your work: 1/2 (16 - x) = -12 (x + 7)
soldi70 [24.7K]
You have to get rid of 1/2 by multiplying it by its recriprocal which is like this:
1) 1/2 x 2/1 which equals to zero and you do the same to the other side.
2) -12 x 2/1 = -24x then multiply-24x with 7 which equals -168.
16-x= -24x -168
3) subtract 16 to the other side and subtract 24x with x
23x= -184
4) divide by 23 to isolate x and you get -8
5) x=-8
6 0
3 years ago
Read 2 more answers
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