1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dvinal [7]
2 years ago
10

A human body that is performing light work generates about 650 BTUs of body heat per hour. If a room that is 10 ft × 12 ft × 9 f

t is being painted by 3 people, how many BTUs per cubic foot do they produce in 2 hours? (to the nearest tenth)
Mathematics
2 answers:
Helen [10]2 years ago
7 0
Your answer should be, BTU / cubic foot = 650 (4) (4) / 5000 = 2.08 BTU / ft^3, Hope this helps you! :D
Crazy boy [7]2 years ago
7 0

Answer:

1.5BTU/ft³( to nearest tenth)

Step-by-step explanation:

A human body generates 650BTus of heat per hour.

To get the amount of heat generated by a room with the dimension 10 ft × 12 ft × 9 ft

First we will find the volume of the room in cubic ft

Volume = length ×breadth × width

Volume = 10×12×9

Volume = 840ft³

This means 840ft³ produces 650Btu of heat by one body.

For 1ft³, amount of BTUs generated by the three person in an hour will be (640/840)BTU i.e 0.762BTU

Amount of heat in BTU/cubic feet generated in 2 hours will be

2 × 0.762BTU/ft³

= 1.524BTU/ft³

= 1.5BTU/ft³( to nearest tenth)

You might be interested in
2. An electronics store sold 1,500 CD's this year. The previous year, the store sold 990
Vera_Pavlovna [14]

Answer:

52%

Step-by-step explanation:

First, find the difference between this year's sales and the previous'. 1500-990=510.

Now we can divide 990 by 510 to find the percent increase. 510/990=0.515151515152, or 52%.

8 0
3 years ago
Read 2 more answers
taki has her back to a wall. she starts to walk straight forward. she stops and turns 133° to the right and walks back in this d
Nikitich [7]
I'd like to assume that the triangle is a right triangle and you solve for x so...

133 + c = 180   (supplementary property to find one angle of triangle)
          c = 47

x = 180 - 90 - 47 (int. angles of triangle = 180)
   = 90 - 47
   = 43

Therefore, x is 43 degrees
6 0
3 years ago
Explain how to identify A relative maximum and relative minimum of a function using key features
Vlad1618 [11]
Found this on google to help you out but it states “ Find the first derivative of a function f(x) and find the critical numbers. Then, find the second derivative of a function f(x) and put the critical numbers. If the value is negative, the function has relative maxima at that point, if the value is positive, the function has relative maxima at that point.”
4 0
3 years ago
The manager of a snack bar buys bottled water in packs of 35 and candy bars in packs of 20. Then, she sells the items individual
hoa [83]

Answer:

8 packs of bottled water and 14 packs of candy bars

Step-by-step explanation:

Provided,

Each pack of water bottles = 35 bottles

Each pack of candy = 20 candy

Since quantity of candy in each pack is small than quantity of water bottle in each pack, in order to have same quantity in numbers of both bottles and candies,

Purchase quantity of candy packs shall be more than the pack of water bottles.

Further, with this option 1 and 2 are not valid as candy packs are same or less than packs of water bottle.

In option 3 and 4, option 3 have smaller quantities as provided manager bought the least possible quantity.

Accordingly

Option 3

8 packs of water bottle = 8 \times 35 = 280 \ water\ bottles

14 packs of candy = 14 \times 20 = 280 \ candies

Since the quantities of water bottles and candies are same this is an opt answer.

6 0
3 years ago
Read 2 more answers
Using the traditional formula, a 95% CI for p1 − p2 is to be constructed based on equal sample sizes from the two populations. F
inn [45]

Answer:

49

Step-by-step explanation:

Given:

Width = 0.4

Let's take the z value of 95% which is = 1.96

Let's assume population proportion p1 and p2 = 0.5

For margin of error E, the relation between the width and margin of error is 2E.

i.e 2E = 0.4

E = 0.2

To find the sample size, n, let's use the formula :

n= \frac{z^2*(p_1(1-p_1) + p_2(1-p_2))}{E^2}

= \frac{1.96^2(0.5(1-0.5)+0.5(1-0.5))}{0.2^2}

= 48.02

≈ 49

8 0
3 years ago
Other questions:
  • F×v= 13,573,692,509 if f stands for 5837 then what is v?
    7·2 answers
  • Rename the number 760 hundreds
    15·1 answer
  • Trees are planted along a road it is to kilometers 50 m long 11 trees are planted at an equal distance apart along the road what
    10·1 answer
  • Out of 20 attempts, a basketball player scored 8 times. What percent
    13·1 answer
  • What is the answer to: <br> 1-x &gt;2x-2
    10·1 answer
  • Helppp!!! I have to determine the height of the sandbox
    15·1 answer
  • Solve for x: 2 logz 2x = 6
    13·1 answer
  • PLZ HELP CLICK THE PIC
    13·1 answer
  • What is a necessary step for constructing parallel lines?
    5·1 answer
  • X + 7y = 21<br> x + 4y = 15<br> Solve the simultaneous equations
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!