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anzhelika [568]

2 years ago

15

Probability & Statistics

1 answer:

NikAS [45]2 years ago

5 0

Answer: the median is 3

Step-by-step explanation:

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A Crane Lifts a load of 4000N to a height of 20m in 5 seconds. Calculate the power of the Crane in horse power

Digiron [165]

Answer:

2.54379284 hp.

Step-by-step explanation: Torque is defined as the engines rotational force. First we find the distance = m in equation- then we use the formula Power = work/time = 16.7/ 5 = 3.34 and Horsepower formula is given by. Horsepower = (Torque × Speed) / 5252. HP = (3.34 × 4000) / 5252. HP = 13360/5252. HP = 2.54379284 hp.

Given : W=4000 m=? h=20 m

Time of operation t =5 s

Work done in lifting a box W=mgh= ? ×12×20=4000 = m = 4000/240=16.6666667 = 16.7KG

Power required P= W/t = w/p = 120000/120 =1000 watts We divide 60/5 = 120 then divide by 10 = 12 (being g)

3 0

2 years ago

Eight people were asked what the balance of their checking account at the beginning of this past week was and how much it increa

TEA [102]

Billy because she has has has beginning balance

6 0

2 years ago

Read 2 more answers

Ashley has two jobs: mowing lawns and babysitting. She earns $9 per hour mowing lawns (x) and $7 per hour babysitting (y). She a

SpyIntel [72]

Answer:

The correct answer is 9x + 7 y $\geq$ 147 where Ashley works for x hours as lawn mower and y hours as babysitter per week.

Step-by-step explanation:

Ashley works in two different jobs namely mowing lawns and babysitting.

Let Ashley mow lawn for x hours and babysit for y hours in a week.

Ashley's earning for every hour she mow is $ 9. Total earning mowing lawn is $ 9x.

Ashley earns $7 for every hour she babysit. Total earning babysitting is $ 7y.

Total earning per week $ (9x + 7y).

Ashley's earning per week is at least $147.

∴ The required inequality to describe the above case is 9x + 7 y $\geq$ 147.

6 0

2 years ago

Read 2 more answers

John needs 7 gallon bottles of water to fill 90water balloons how many gallon bottles of water does John need to purchase to fil

Allushta [10]

Answer:

11 bottles

Step-by-step explanation:

make a proportion because if you're using the same rate proportions can show that it's equal

$\frac{7}{90} = \frac{x}{140}$

cross multiply

$7 *140$ $= 980$

divide the answer by 90 to find x

$980/90= 10.8$

round to 11 because you can't have 10.8 bottles

8 0

2 years ago

What does -5+y/6=-7 in one step equation form ?

max2010maxim [7]

Answer: y= −12

Step-by-step explanation:

8 0

2 years ago