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Gala2k [10]
3 years ago
13

Someone answer this asap pls

Mathematics
2 answers:
Dmitry [639]3 years ago
8 0

Answer:

3.0

Step-by-step explanation:

bekas [8.4K]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

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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
Mary sells fruit with four of her friends. If the earnings are divided evenly, how
nignag [31]

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let the total money earned be x

since each of them get equal share, therefore :

\qquad \tt \dashrightarrow \:5 \times 30 = x

\qquad \tt \dashrightarrow \:x =  \$150

And here, we used <u>Total earning</u> as the variable in the problem ~

So, correct choice is D

5 0
2 years ago
Read 2 more answers
Graph the equation y = -1/4x + 2
valkas [14]

Answer:

y - intercept: 2 slope: down 1(-1), right 4(40

Step-by-step explanation:

5 0
3 years ago
At a yard sale,Dan bought a used lawnmower for $60. that was 30% of what the mower cost when it was new. What was the original p
Ivanshal [37]

Answer:

30/100 X $60= $18.

The original price will be $60 + $18 = $78.

4 0
3 years ago
3.) If y vanes inversely as x, and y = 9 when x = 4, find y when x =12
natali 33 [55]

Answer:

y= 36

Step-by-step explanation:

if y varies directly as x, and y=9 when x=4, find y when x=16

.

When you see "direct variation" think:

y = kx

.

To find k, use "y=9 when x=4":

y = kx

9 = k(4)

9/4 = k

 

.

so, our equation is:

y = (9/4)x

.

now, we can answer:

find y when x=16

y = (9/4)x

y = (9/4)(16)

y = (9)(4)

y = 36

5 0
3 years ago
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