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3 years ago

If you could explain and answer I’d appreciate

Mathematics

2 answers:

statuscvo [17]3 years ago

8 0

I think the answer is 10. Normally 5-15 would be -10 but because of the absolute value bracket things (I don’t remember what they’re called) it would be the opposite of the negative number, so I think your answer is 10. I haven’t done these in a while

Cerrena [4.2K]3 years ago

4 0

Answer:

-10

Step-by-step explanation:

5 is lower than 15 so the answer must be negative

if 15 minus 5 is 10

then 5 minus 15 has to be 10

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Juan and Nina are in the Junior High Orchestra. As part of the orchestra they each have to learn two instruments. Juan is learni

larisa86 [58]

Answer:

Nina practiced the viola for 11.25 hours last week.

Step-by-step explanation:

Juan practiced the violin for 9 hours last week. For each 3 hours that he practices the violin, he practices 2.5 hours of cello. So

3h violin - 2.5h cello

9h violin - xh cello

$3x = 9*2.5$

$x = 7.5$

He practiced 7.5 hours of cello, the same as Nina.

For every 3 hours Nina spends practicing the viola she practices the cello for 2 hours. So:

3h viola - 2h cello

xh viola - 7.5h cello

$2x = 3*7.5$

$x = 7.5*1.5$

$x = 11.25$

Nina practiced the viola for 11.25 hours last week.

7 0

2 years ago

15Points!!<br> Factor completely.<br><br><br> 12x² +28x

Zigmanuir [339]

Answer:

4x(3x+7)

Step-by-step explanation:

$12x^2+28x\\12xx+28x\\\\4\cdot \:3xx+4\cdot \:7x\\4x\left(3x+7\right)$

4 0

2 years ago

These two scalene triangles are similar with a scale of 2:3

yarga [219]

Answer:

the answer is PQ/GH=3/2

Step-by-step explanation:

Here is the anwer hope you like it thanks

4 0

3 years ago

Jacob is working two summer jobs, making $10 per hour washing cars and making $8 per hour landscaping. In a given week, he can w

Burka [1]

Answer:

Step-by-step explanation:

Let x represent the number of hours that that he spent washing cars.

Let y represent the number of hours that that he spent landscaping.

In a week, he can work no more than 19 total hours. This means that

x + y ≤ 19- - - - - - - - - - - -1

Jacob is working two summer jobs, making $10 per hour washing cars and making $8 per hour landscaping. He must earn at least $170. This means that

10x + 8y ≥ 170 - - - - - - - - - -2

If Jacob worked 4 hours landscaping, it means that

x + 4 ≤ 19

x ≤ 19 - 4

x ≤ 15

Also,

10x + 8 × 4 ≥ 170

10x + 32 ≥ 170

10x ≥ 170 - 32

10x ≥ 138

10x ≥ 138/10

x ≥ 13.8

The minimum number of hours is 14

6 0

3 years ago

What was the total amount of water in the tank before it was drained

OlgaM077 [116]

Answer:

c is the correct option

Step-by-step explanation:

please mark me as brainlist

4 0

2 years ago

Read 2 more answers