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3 years ago

A cyclist travels at an average speed of 15 mph for 3 hours. How far did she travel in miles?

Mathematics

1 answer:

vazorg [7]3 years ago

7 0

Answer:

Step-by-step explanation:

3 hours × 15 miles/hour = 45 miles

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The multiplication table below can be used to find equivalent ratios.

Natasha_Volkova [10]

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Step-by-step explanation:

Becuse its k hgystdgshxygs

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3 years ago

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4 1⁄10 ÷ 1 1⁄2 plsss answerr now ..thankyou

Ronch [10]

Answer:

2 11/15

Step-by-step explanation:

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A point moves along the curve y = √ x in such a way that the y-component of the position of the point is increasing at a rate of

Eduardwww [97]

Answer:

The value of x component changes at a rate of $\frac{dx}{dt}=4\sqrt{x}$ units per second

Step-by-step explanation:

We are given that $y=x^{\frac{1}{2}}$

Differentiating on both sides with respect to time we get

$\frac{dy}{dt}=\frac{d\sqrt{x}}{dt}\\\\\frac{dy}{dt}=\frac{1}{2}x^{\frac{-1}{2}}(\frac{dx}{dt})\\\\\frac{dy}{dt}=\frac{1}{2\sqrt{x}}\frac{dx}{dt}$

It is given that $\frac{dy}{dt}=2units/sec$

Solving for $\frac{dx}{dt}$ we get

$\frac{dx}{dt}=\frac{dy}{dt}\times 2\sqrt{x}\\\\\frac{dx}{dt}=4\sqrt{x}$

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3 years ago

Find X and Y please explain

Alex777 [14]

In this diagram we see that 80 and 3x+4y are both vertical angles and vertical angles are congruent or always equal so we can set those two equations equal to each other then we can see that a line splits two angles making them supplementary (they equal 180 degrees) So we can have another equation, the two equations are:

3x+4y=80 and 3x+4y+7x-8y=180 (add like terms to simplify and get 10x-4y=180

Then use elimination to get rid of the y variables

10x-4y=180 (plus)

+3x+4y=80 (the negative 4 and positive 4 cancels each other out so you are left with:)

13x=160 (divide by x)

x=12.30769 which can be rounded to x=12.31

Then we have to plug in x into the first equation:

3(12.31) + 4y = 80

36.93 + 4y = 80 (subtract 36.93 from 80)

4y = 43.07 (divide)

y=10.7675 or rounded to 10.77

so x=12.31 and y=10.77

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3 years ago

A hot air balloon begins it's descent at a rate of 22 1/2 feet per minute.how long will it take for the balloons elevation to ch

Dovator [93]

It would take 14 minutes for the balloons elevation to change by 315 feet.

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3 years ago