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maksim [4K]
3 years ago
5

Make it correct.. please...

Mathematics
1 answer:
malfutka [58]3 years ago
6 0

Answer:

6.83, 7.03

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

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3 years ago
"Tim's lawn is 20 meters by 30 meters. If Tim can mow 8 square meters of grass per minute, how long will it take him to mow the
frosja888 [35]
One hour and a half
5 0
3 years ago
Francine applies the commutative property to the product. (−8/9)⋅(−13)⋅(18) Which expression illustrates the commutative propert
oksian1 [2.3K]

The commutative property implies that, the order of multiplication is not important.

(-\frac 89) \cdot (18) \cdot (-13) is true

Commutative property of multiplication states that:

If a \times b  = b \times a

The expression is given as:

(-\frac 89)\cdot (-13) \cdot (18)

To get the commutative expression, we simply change the position of each factor in the expression.

So, some possible equivalent expressions are:

(18) \cdot (-13) \cdot (-\frac 89)

(18)\cdot (-\frac 89) \cdot (-13)

(-13) \cdot (18) \cdot (-\frac 89)

There are several other equivalent expressions.

From the list of options;

(-\frac 89) \cdot (18) \cdot (-13) is true

Read more about commutative property at:

brainly.com/question/7037119

4 0
2 years ago
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Which operation will make the llower left element the largest?
algol [13]

Answer:

R2->R3

Step-by-step explanation:

3 0
4 years ago
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10/2x5 using order of operations
Jlenok [28]

Answer:

25

Step-by-step explanation:

10 / 2 = 5 x 5 = 25

7 0
3 years ago
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