Describe how the equation y equal left parenthesis x minus 2 right parenthesis to the power of 2 plus 5 transforms the graph of a basic parabola y equal x to the power of 2 .

Answer:

5.5 grams

Step-by-step explanation:

i did it on study island

A clue that would help to find the speed of the current is that the rate of Chan's rowing in still water is 8 mph.

Concept of Boat and Stream:

This concept comprises of 4 terminologies:

• Stream: Flowing water of the river is stream.

• Upstream: Direction of the boat is opposite to the flow of stream.

• Downstream: Direction of the boat is with the flow of stream.

• Still Water: Considering no movement of water, hence zero speed.

Given:

Speed of Chan's boat in stillwater = 8 mph

Time taken by Chan to row upstream from his house to the park = 3 h

Time taken by Chan to row downstream from the park to his house = 2 h

we have to find the speed of the current.

Let the speed of the current be v.

We know, Speed = Distance / Time

⇒ Distance = Speed × Time

Now, the distance between the house and the park is constant, hence the distance travelled upstream and downstream will be constant.

For upstream, speed of the boat is calculated as:

⇒ Speed = (speed of the boat in still water) - (speed of the current)

⇒ Speed = (8 - v)

Hence, distance is:

⇒ Distance = (8 - v) × 3              …(1)

Similarly for downstream, speed of the boat is:

⇒ Speed = (speed of the boat in still water) + (speed of the current)

⇒ Speed = (8 + v)

Distance will be:                          

⇒ Distance = (8 + v) × 2             …(2)

Now since the distance is equal we can equate the equation (1) and (2).

⇒ (8 - v) × 3 = (8 + v) × 2

⇒ 24 - 3v = 16 + 2v

⇒ 5v = 8

⇒ v = 1.6 mph

Hence, the speed of the current is 1.6 mph.

Here, we can observe that to solve this problem we need the time taken to cross along each stream and the speed of the boat in the still water.

The option: Chan rows from house to the park on Wednesday, gives information about the the distance travelled by the boat and it is  constant and cannot be used to deduce the speed of the current.

The option: The entire trip takes five hours, is not used anywhere to solve the problem, instead the separate times to cross each stream was required. Hence this option was also not sufficient.

Therefore, the rate of Chan's rowing in still water is 8 mph, is the clue that helps to solve this word problem.

Learn more about the Boat and Stream Concept here: brainly.com/question/16712505?referrer=searchResults

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Answer:

its A

Step-by-step explanation:

i literally just took the test

Answer:

Everything except 21/40. That is your ratio. The denominator always

-3X+4=16

Subtract 4 from each side.

-3x+4-4=16-4

-3x=12

Divide each side by -3.

x=-4

I hope this helps!