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Svetach [21]
3 years ago
15

Answer correctly please please please for BL

Mathematics
1 answer:
sweet [91]3 years ago
6 0

Answer:

its 12

Step-by-step explanation:

plz mark as brainliest

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A set of pulleys is used to lift a piano with a mass of 102 kg. The piano is lifted 3 meters in 1 minutes. How much power is use
agasfer [191]

Answer:

50.031 watts

Step-by-step explanation:

Formula

Power = Force * distance / time

The units are critical

distance = meters

time = seconds

force = newtons = kg * m / s^2

Solution

F = m * a

a = 9.81

m = 102 kg

F = 102 * 9.81 = 1000.62 Newtons

T =  minute = 60 sec/min * 1 min

T = 60 seconds

d = 3 meters

Power = 1000.62 * 3 / 60

Power = 50.031

3 0
3 years ago
Help me please! First answer and correct gets brainlist!
faust18 [17]

Answer:

Step-by-step explanation:

4(a)

2,1  2,2  2,3  2,4  2,5 2,6

on the first role u have 16.6667%

second would be 33.3333%

3 0
3 years ago
Find the area of the shaded region if the dimensions of the unshaded region are 20ft x 35ft . use 3.14 for π as necessary.
Westkost [7]

Area of the shaded region is 1397.46 square feet.

<h3>what is area of shaded region?</h3>

The area of the shaded region is the difference between the area of the entire polygon and the area of the unshaded part inside the polygon. The area of the shaded part can occur in two ways in polygons. The shaded region can be located at the center of a polygon or the sides of the polygon.

We are to find the area of the shaded region. For that, we will divide the figure into smaller shapes, find their areas separately and then add them up.

From the given figure, we can see that there are two semi circles or say one whole circle if we combine them at the ends while 2 rectangles at the top and bottom.

Radius of circle = \frac{20+7+7}{2} = 17

Area of circle = \pi r^{2}

                      = \pi( 17)^{2}

                      = 907.92 square ft.

Area of rectangles =2×(l×b)

                              = 2×20×35

                              = 490 square ft

Then,

Area of the shaded region = 907.92 +490

                                            = 1397.46 square ft

Hence,Area of the shaded region is 1397.46 square ft.

To learn more about area of shaded region from the given link:

brainly.com/question/12930222

The above question is not complete.

#SPJ4

8 0
2 years ago
Someone helpp commonn
vitfil [10]

Answer:

Step-by-step explanation:

⁷

3 0
3 years ago
How do I evaluate 2x to the 4 power + 2x to the 3 power when x = 7
lutik1710 [3]
First, you want to multiply 2 times 7 which is 14 then do 14 to the 4th power which is 38,416, then add that by 14 to the third power which is 2,744, so then you will get 41,160 which is your answer.
8 0
3 years ago
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