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Paul [167]
3 years ago
7

During strenuous work a human body generates about 2,400 BTUs of body heat per hour. If 7 bodybuilders are in a gym that is 20 f

t × 25 ft × 12 ft lifting weights, how many BTUs per cubic foot do they produce in 3 hours? (to the nearest tenth) A) 2.8 BTUs/ft3 B) 8.4 BTUs/ft3 C) 33.7 BTUs/ft3 D) 100.8 BTUs/ft3
Mathematics
1 answer:
Vlad [161]3 years ago
3 0
The answer is b) 8.4
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SHOW ALL WORK PLEASE
Ainat [17]

Answer:

1. 14%

2. 98%

3. 52%

4. 13%

5. 39%

6. 28%

7. 20%

8. 37%

9. 17%

10. 19%

Step-by-step explanation:

To get a percentage divide the small number by the big number and then multiply by 100.

1. 28/200 = 0.14 * 100 = 14

2. 931/950 = 0.98 * 100 = 98

3. 364/700 = 0.52 * 100 = 52

4. 13/100 = 0.13 * 100 = 13

5. 273/700 = 0.39 * 100 = 39

6. 161/575 = 0.28 *100 = 28

7. 200/1000 = 0.2 * 100 = 20

8. 68/400 = 0.37 * 100 = 37

9. 68/400 = 0.17 * 100 = 17

10. 95/500 = 0.19 * 100 = 19

5 0
3 years ago
What is the area of a shaded segment with an area of 12 and an arch angle of 60
Scorpion4ik [409]
<span>Let A = the area of the whole circle
Let S = the area of the shaded portion</span><span>
The shaded area is a portion of the circle that is determined by the ratio of the shaded sector to the whole circle of 360 degrees, or
 S = (60/360) </span>× <span>A = ( 1 / 6 ) </span>× 12 = 2 ;
3 0
3 years ago
-4 + 4 <br> Same signs? <br> Different sign?<br> Add/Subtract?
marin [14]

Answer:

Step-by-step explanation:

-4 is negative 4 witch is less then 4. -4 +4 =0

4 0
3 years ago
Read 2 more answers
For his car Jason paid 91.48 per speacker for 3 speackers and 92.55 per tire for 5 tires with 8 100 bills . How much did Jason g
Svetach [21]

Answer:

1 speaker is $91.48

3 speakers = $91.48 × 3

= $274.44

1 tire is 9$2.55

5 tires = $92.55 × 5

= $462.75

8, 100 bills = $800

The cost for the 3 speakers and 5 tires = $274.44 + $462.75

= $737.19

Therefore, the change that Jason got was = $800 - $737.19

= $62.81

5 0
3 years ago
How many x-intercepts are in y=3x^2+5?
Pepsi [2]

Answer:

There are no x-intercepts.

Step-by-step explanation:

To find an x intercept we have to find where y = 0

So set the equation equal to zero

0 = 3x^{2} +5

-5 = 3x^{2}

x = \sqrt{\frac{-5}{3} }

Since the number under the radical is negative, we know there are no real solutions, and therefore there are no x-intercepts.

This is shown on the graph.

3 0
3 years ago
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