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2 years ago

Showw the work need it fastt

Mathematics

1 answer:

iogann1982 [59]2 years ago

5 0

Answer:

it is also asking to find the total surface area.

Step-by-step explanation:

use the example

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The variable z varies jointly with x and y and inversely with v and w. Using the constant of variation,k, from the last problem,

antiseptic1488 [7]

Answer:

Step-by-step explanation:

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3 years ago

Rewrite the following radical term into rational exponent form. √x

bixtya [17]

Answer:

x¹/²

Step-by-step explanation:

Taking the square root of a number is the same as taking it to the power of one half.

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2 years ago

Whats 1+1 lol I need help

ryzh [129]

Answer:

Baby 1

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Mommy 1 and Daddy 1 have some fun, they had so much fun that they made baby 1

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2 years ago

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1. The table shows the relationship between y, the cost to rent a bicycle, and x, the amount of time the bicycle is rented in ho

Arlecino [84]

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Step-by-step explanation:

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3 years ago

You are wakeboarding on a river. You travel 2 miles downstream to a marina for supplies, and then you travel 3 miles upstream to

Zielflug [23.3K]

Let x represent the speed of of boat.

We have been given that the river current is 3 miles per hour.

The speed of boat upstream will be $x-3$ .

The speed of boat downstream would be $x+3$ .

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

We have been given that you travel 2 miles downstream to a marina for supplies, and then you travel 3 miles upstream to a dock.

We can represent this information in an equation as:

$\text{Time}=\frac{2}{x+3}+\frac{3}{x-3}$

Since the speed of the boat is 18 miles per hour, so we will substitute $x=18$ in above equation and solve for time.

$\text{Time}=\frac{2}{18+3}+\frac{3}{18-3}$

$\text{Time}=\frac{2}{21}+\frac{3}{15}$

$\text{Time}=\frac{2}{21}+\frac{1}{5}$

$\text{Time}=\frac{2\cdot 5}{21\cdot 5}+\frac{1\cdot 21}{5\cdot 21}$

$\text{Time}=\frac{10}{105}+\frac{21}{105}$

$\text{Time}=\frac{31}{105}$

$\text{Time}=0.295238095$

Since time is in hours, so let us convert our given time in minutes.

1 hour = 60 minutes.

$\text{Time}=0.295238095\times 60\text{ minutes}$

$\text{Time}=17.7142857\text{ minutes}$

Rounding to nearest tenth of minute.

$\text{Time}\approx 17.7\text{ minutes}$

Therefore, it will take approximately 17.7 minutes for the boat to take the trip.

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3 years ago