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3 years ago

15

the more aerobic exercise (for example, running) a person does, the more endurance he or she will have. true or false? the amoun

t of endurance is a function of the amount of aerobic exercise. a. true b. false

1 answer:

sammy [17]3 years ago

3 0

I believe the answer is A.True

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What are the prime factors of 4,725

PtichkaEL [24]

Prime factors of 4,725 are 3, 5 and 7

5 0

3 years ago

If x² + xy – 3y = 3, then at the point (2, 1), dy/dx

Scilla [17]

Answer:

A

Step-by-step explanation:

We have the equation:

$x^2+xy-3y=3$

Take the derivative of both sides with respect to x:

$\frac{d}{dx}[x^2+xy-3y]=\frac{d}{dx}[3]$

Implicitly differentiate:

$2x+y+x\frac{dy}{dx}-3\frac{dy}{dx}=0$

Solve for dy/dx:

$\frac{dy}{dx}(x-3)=-2x-y\\$

Divide:

$\frac{dy}{dx}=-\frac{2x+y}{x-3}$

To find dy/dx at (2, 1), substitute 2 for x and 1 for y. So:

$\frac{dy}{dx}_{(2, 1)}=-\frac{2(2)+1}{2-3}=-\frac{5}{-1}=5$

Hence, our answer is A.

4 0

3 years ago

A small aircraft flies a 2160-mi round trip in a 45 mi/h wind. Find the average rate of speed for the trip if the aircraft can f

jok3333 [9.3K]

9514 1404 393

Answer:

216 mi/h

Step-by-step explanation:

The time for the trip with the wind is ...

(1080 mi)/(225 +45 mi/h) = 4 h

The time for the trip against the wind is ...

(1080 mi)/(225 -45 mi/h) = 6 h

The average speed for the entire round trip is ...

(2160 mi)/(4 +6 h) = 216 mi/h

8 0

2 years ago

3/2^x=12 solve for x Two step equations

cricket20 [7]

Here’s the Answer for this equation

3 0

3 years ago

Please help. I’ll mark you as brainliest if correct!

beks73 [17]

Answer:

x and y can have many values

Step-by-step explanation:

-24x - 12y = -16

Then: 24x + 12y = 16

We know: 6x + 3y = 4

X and Y can have a lot of valoues.

6x + 3y = 4

3 ( 2x + y) = 4

2x + y= 4/3

2x+y= 1.333...

6 0

2 years ago