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klemol [59]
2 years ago
8

(A+) It takes a painter and his friend 8 hours to paint a room. If the painter was working alone, it would take him 12 hours les

s than if his friend was working alone. How long does it take the painter to paint the room by himself?
Mathematics
1 answer:
s2008m [1.1K]2 years ago
6 0

Answer:

24 hours

Step-by-step explanation:

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​Dolbear's law states the relationship between the rate at which Snowy Tree Crickets chirp and the air temperature of their envi
tia_tia [17]
I assume that if we write the equation in its mathematical form it will appear like this:
                                  T = 50 + (N - 40)/4
Substituting the value of T given,
                                  58 = 50 + (N-40)/4
The value of N from the generated equation above is equal to 72. Therefore, the Snowy Tree Crickets chirp 72 times per minute at a temperature of 58°F.
6 0
2 years ago
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the temperature in an experiment is increased at a constant rate over a period of time until the temperature reaches 0 degrees c
dsp73

Answer:

x = 28 (So it takes 28 hours for the temperature to reach 0°C.)

y = -70 (So the temperature when the experiment begins is −70°C.)

Step-by-step explanation:

To find the the x value, you remove the y value or replace it with 0.

0 = 5/2x - 70

Next you move the variable.

70 (2/5) = x           (multiply 70 by 2 to get 140 and divide that by 5)

And now you simplify to get:

28

To find the y value, you remove the x value or replace it with 0.

y =  0 - 70

And now you simplify to get:

-70

x = 28

y = -70

7 0
2 years ago
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What is the volume of a pyramid container if the area of its base is 100 square inches and its height is 5 inches
Gnoma [55]

Answer:

V≈166.67

Step-by-step explanation:

V=ABh

3=100·5

3≈166.66667

5 0
2 years ago
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Find the length of the hypotenuse. Round your<br> answer to the nearest hundredth.
sergij07 [2.7K]

Answer:

8.06

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + 7^2 = c^2

16 +  49 = c^2

65= c^2

Find the square root of 65

8.06

3 0
3 years ago
Find f(-3) if f(x) = x^2.
Serggg [28]

Answer:

9

Step-by-step explanation:

f(-3)=-3×-3

= (-)(-)9

=+9

- into - covert into positive when you have square on x

hopefully, it works for you

6 0
3 years ago
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