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solong [7]
3 years ago
7

Plz help me with this math ​

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
5 0

Answer:

$68.13

Step-by-step explanation:

$7.29x3=$21.87

$5x2=$10.00

$21.87 + $10.00=$31.87

$100.00-$31.87=$68.13

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The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprin
Rashid [163]

The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprinkler was 15 L per hour. The water output rate for the Perry family's sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 1850 L . How long was each sprinkler used

Answer:

Hours of use of sprinkler by Lewis family is 30 hours.

Hours of use of sprinkler by Perry family is 35 hours.

Step-by-step explanation:

Let W = hours of use by Lewis family

65 - W = hours of use by Perry family

Then;

15W + 40*(65 - W) = 1850

15W + 2600 - 40W = 1850

(15 - 40)W = 1850 - 2600

-25W = −750

W = 750/25 = 30

Therefore;

W = 30

65 - W = 65 - 30 = 35

Hence,

Hours of use by Lewis family is 30 hours.

Hours of use by Perry family is 35 hours.

3 0
3 years ago
What is the solution to this equation? 2x+2=10
mrs_skeptik [129]
X=4 ........................................
8 0
2 years ago
Read 2 more answers
Determine the slope of the line segment<br> A.) 2<br> B.) 5<br> C.) 1/2<br> D.) 5/3
ohaa [14]

up 5

over to the right 3

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5/3

Choice D

6 0
3 years ago
Please help me solve this step by step please :(
Ratling [72]

Answer:

B) 60.21 ft²

Step-by-step explanation:

Area of a triangle = 1/2bh

You can‘t used mixed measurements (feet and inches), so you have to convert each length to inches

8’6”=102’

14’2”=170’

Now find the area

1/2 x 102 x 170 = 8670 in²

This is one of the answers, but the quetion asks how many quart feet you need.

So, convert it back to feet.

8670 x 0.06944444444 = 60.2083333

(You could also have converted the two lengths to feet. 8’6” = 8.5 ft.  14’2” = 14.16666666.  This way would probably have been faster.

1/2 x 8.5 x 14.166666 = 60.20833333)

3 0
2 years ago
Please someone help quickly thank you very much
Tema [17]

Answer:

I think the answer is 81.

Step-by-step explanation:

Vertical angles are congruent.

x + 3 = 84

  - 3  = -3

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

x = 81

3 0
3 years ago
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