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slega [8]
3 years ago
10

Can you guys help me with this question? thanks

Mathematics
1 answer:
ohaa [14]3 years ago
5 0

Answer:

136

Step-by-step explanation:

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Two families are shopping for a camping trip. The first family buys 3 flashlights and 4 sleeping bags at a cost of $118. The sec
Sliva [168]

Answer:

3x +4y = 118

5x+6y =180

y= $25

Step-by-step explanation:

Let x = the cost of a flashlight

Let y = the cost of a sleeping bag

3x +4y = 118

5x+6y =180

Multiply the first equation by -5

-5(3x +4y) = -5*118

-15x -20y = -590


Multiply the second equation by 3

3(5x+6y) =3*180

15x + 18y = 540

Add the modified equations together.

We are using elimination to eliminate the variable x

-15x -20y = -590

15x + 18y = 540

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

-2y = -50

Divide by -2

-2y/-2 = -50/-2

y =25

Each sleeping bag costs $25

7 0
3 years ago
Read 2 more answers
ABC ~ ADE; find x <br> Pls help!!
Lubov Fominskaja [6]

Step-by-step explanation:

  • If ABC~ADE
  • then DE~BC

\sf \rightarrowtail \: 2x + 3 = 15 \\  \sf \rightarrowtail \: 2x = 15 - 3 \\  \sf \rightarrowtail \: 2x = 12 \\  \sf \rightarrowtail \: x =  \frac{12}{2}  \\  \sf \rightarrowtail \: x = 6

8 0
2 years ago
Choose the correct way to write a comparison of seven-twelfths and ten-twelfths.
ra1l [238]

Answer:

ok so lets work this out

Step-by-step : 10/12 is closer to 12 than 7/12  soooo its not any of the ones that have these (:) and 10 is bigger than 7 so its

7/12 < 10/12

3 0
2 years ago
70% of the 100 students in a middle school cafeteria bought their lunch. Some of the students that bought there lunch leave the
Fittoniya [83]
600 because 60 percent of 100 is 600
5 0
3 years ago
Read 2 more answers
Brad walked 2.5 miles in 5/6 of an hour.how fast does he walk per hour
Lelu [443]

Answer:

Rate or speed=3 Miles per hour

Step-by-step explanation:

Brad walked 2.5 miles in 5/6 of an hour.

Distance covered by Brad = 2.5 miles

Distance covered by Brad= 2 1/2 miles

Distance covered by Brad= 5/2 miles

Time taken to cover the distance = 5/6 of an hour

His rate of walking or how fast he walks is determined by the formula

Rate or speed= distance/time

Rate or speed=( 5/2)/(5/6)

Rate or speed= (5/2)*(6/5)

Rate or speed=6/2

Rate or speed=3 Miles per hour

6 0
3 years ago
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