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2 years ago

Please can someone help me answer this I’m having a hard time

Mathematics

1 answer:

alisha [4.7K]2 years ago

5 0

Answer:

so draw a diagram and draw like 8 cups with the flour. you would put under the cups

Step-by-step explanation:

8×2=(6×8

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If f(x) = 2x2 - x, find f(-3). 15 21 39

elixir [45]

I believe its 21 sorry if im wrong

5 0

3 years ago

Read 2 more answers

Jack drove to work in the morning at an average speed of 45 miles per hour. He returned home in the evening along the same route

Dmitry [639]

Answer:

Step-by-step explanation:

Let's say that the time it took him to get to work in the morning is t hours. Then the time it took him to get home in the afternoon must be 1 - t hours. We know that for any trip, distance equals rate times time or d = rt . That means that the distance he drove to work is given by , but we also know that the distance he drove to get home must be the same distance, because he took the same route (and, presumably, no one picked up him house and moved it while he was at work) so for the trip home we can say d = 30 × (1 - t) and since the distances are equal, we can say:

45t = 30 × (1 - t)

45t = 30 - 30t

45t + 30t = 30

75t = 30

t = 30/75

t = 2 /5 hour to drive to work at 45mph

Since , d = rt

d = 45 ×(2/5) = 18miles

8 0

3 years ago

Birthstones of students in your class qualitative Or quantitative??

Alik [6]

Quantitive since it can be counted

3 0

3 years ago

Find the work (in ft-lb) required to pump all the water out of a cylinder that has a circular base of radius 7 ft and height 200

Virty [35]

Answer:

work done is equal to 384279168 lb-ft

Step-by-step explanation:

The cylinder has a circular base of 7 ft.

The height of the cylinder is 200 ft

The weight density of water in the cylinder is 62.4 lb/ft^3

First, we find the volume of the water in the cylinder by finding the volume of this cylinder occupied by the water.

The volume of a cylinder is given as $\pi r^{2} h$

where, r is the radius,

and h is the height of the cylinder.

the volume of the cylinder = $3.142* 7^{2}*200$ = 30791.6 ft^3

Since the weight density of water is 62.4 lb/ft^3, then, the weight of the water within the cylinder will be...

weight of water = 62.4 x 30791.6 = 1921395.84 lb

We know that the whole weight of the water will have to be pumped out over the height of cylindrical container. Also, we know that the work that will be done in moving this weight of water over this height will be the product of the weight of water, and the height over which it is pumped. Therefore...

The work done in pumping the water out of the container will be

==> (weight of water) x (height of cylinder) = 1921395.84 x 200

==> work done is equal to 384279168 lb-ft

7 0

3 years ago

5x − 3y = −11 2x − 6y = −14

Digiron [165]

The answer is 2x-6y=-14 is the aswer

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3 years ago