The point (-3,4) is reflected across the x-axis. What is the coordinates of its new location?

A model of the Saturn V rocket has a scale of 1 inch = 12 feet. If the model rocket is 30 inches tall, how tall was the actual S

Basile [38]

Answer:

360 feets

Step-by-step explanation:

Given :

Scale : 1 inch = 12 feets

This means 1 inch on paper (model) represents 12 feets in real life

If the model height = 30 inches ;

The actual height of the Saturn V rocket will be :

1 inch = 12 feets

30 inch = x

x = (30 * 12)

x = 360 feets

Actual height = 360 feets

4 0

3 years ago

Find the length of the missing side, rounded to the nearest-tenth. 11 9

KatRina [158]

Answer:

11=10 9 =10 because 5 or more is bring the number up but 4 or lest it rest

8 0

3 years ago

Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt.

qwelly [4]

Answer:

A)

$\displaystyle \frac{dy}{dt}=-\frac{33}{8}$

B)

$\displaystyle \frac{dx}{dt}=\frac{3}{2}$

Step-by-step explanation:

x and y are differentiable functions of t, and we are given the equation:

$xy=6$

First, let's differentiate both sides of the equation with respect to t. So:

$\displaystyle \frac{d}{dt}\left[xy\right]=\frac{d}{dt}[6]$

By the Product Rule and rewriting:

$\displaystyle \frac{d}{dt}[x(t)]y+x\frac{d}{dt}[y(t)]=0$

Therefore:

$\displaystyle y\frac{dx}{dt}+x\frac{dy}{dt}=0$

A)

We want to find dy/dt when x = 4 and dx/dt = 11.

Using our original equation, find y when x = 4:

$\displaystyle (4)y=6\Rightarrow y=\frac{3}{2}$

Therefore:

$\displaystyle \frac{3}{2}\left(11\right)+(4)\frac{dy}{dt}=0$

Solve for dy/dt:

$\displaystyle \frac{dy}{dt}=-\frac{33}{8}$

B)

We want to find dx/dt when x = 1 and dy/dt = -9.

Again, using our original equation, find y when x = 1:

$(1)y=6\Rightarrow y=6$

Therefore:

$\displaystyle (6)\frac{dx}{dt}+(1)\left(-9)=0$

Solve for dx/dt:

$\displaystyle \frac{dx}{dt}=\frac{3}{2}$

5 0

3 years ago

Can people help me please to find the volume about question number 10 please and tell me the answer step by step please I need h

Alecsey [184]

#10
Volume of a cylinder: $\pi$ r²h

Plug the numbers in.

$\pi$ 3²15 = 424

The volume of the pipe is 424 cm³.

7 0

4 years ago

What is the value of the coins?

nikitadnepr [17]

Answer:

220 cents, $2.20

Step-by-step explanation:

Count the amount of QUARTERS there are.

7 quarters.

The next coin in the photo is a dime.

4 dimes.

The next coin in the photo is a penny.

5 pennies.

Quarters are worth 25 cents, dimes are worth 10 cents, and pennies are worth 1 cent.

25(7) + 4(10) + 5(1) = v (the total value)

25 * 7 = 175 cents

4 * 10 = 40 cents

5 * 1 = 5 cents

175 + 40 + 5 = v

175 + 40 = 215 cents

215 + 5 = 220 cents

The value of all of those coins is 220 cents, or $2.20.

5 0

3 years ago