Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week. Is she correct? Show your work to justify your decision

Answers

Answer 1

Answer: The best way to solve this problem is to use the 'rule of three":

If 15% correspond to 100%

then 18% correspond to X%

We notice that both lines are in the following proportion:

(15) / (100%) = (18) / (X%)======> X%= (18 x 100%) / 15= 6/5 = 1.2 =120%

Answer 2

Answer:

Answer:

Maxine is incorrect.

Step-by-step explanation:

18 - 15 = 3 3/15 = 0.2 0.2(100) = 20.

20% is the percent of increase. 120% would be the total of both combined. Since we are only looking for how much more, it would be 20%.

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Please help work is due tomorrow. Thanks

(−7.9 + (−3.4)) + (8.2 + 2.1)

Answers

the answer is -1, when adding both sides.

By how much is 5/8 greater than 1/4 of 1/2

Answers

the answer is five percent

1/4 of 1/2 is 1/8 so 5/8 is 1/2 greater then 1/4 of 1/2.
Hope this helps.

Here are the scores that Jenna has received on her seven quizzes what is the upper quartile

Answers

The upper quartile is 18

Answer:

The answer for the upper quartile is 18

Acellus sux

Step-by-step explanation:

What is times as much as 0.3

Answers

i guss its 00.3 if anyone has another answer then ok because i dont realy know

I need you to be more specific with your questions

What is the solution for the system of equations x+y=2 and x-y=4

Answers

x+y=2 (label equation one)
x-y=4 (label equation two)

y=-x+2 (equation one rearranged, label this equation equation three)

sub 3 into 2
x-(-x+2)=4
x+x-2=4
2x-2=4
2x=6
x=3
sub x=3 into equation one

3+y=2
y=-1

therefore x=3 and y=-1

I nedd help I wll give branlieness to the best answer

Answers

Answer:

Step-by-step explanation:

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