Ask question

Ask question

All categories

3 years ago

14

The Blue Plane travels at a constant speed of 120 miles per hour. If it travels for 2 1/2 hours to get to Pennsylvania how far d

id it go?

2 answers:

Oduvanchick [21]3 years ago

7 0

Answer:

The answer is 300 miles

Step-by-step explanation:

120x2=240

120x .5= 60

240+60=300

Masteriza [31]3 years ago

5 0

Monas no se JR ponervqtw637837465738293646647384959757595 nvdaJo9’42º deañuf9eq’

You might be interested in

10 A seal pup gains 28% of its birth weight each

slava [35]

Answer:

WEIGHT

550 to 880 pounds

LIFESPAN

25 to 35 years

LENGTH

7.5 to 10 feet

THREATS

Entanglement, harassment, chemical contaminants, oil spills and energy exploration, vessel and vehicle interactions

REGION

New England/Mid-Atlantic

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Solve the formula for the indicated variable.

Leya [2.2K]

The given expression is

$T = \frac{3U}{E}$

In this expression we have to solve for U.

First we have to get rid of E from the denominator, and for that, we have to multiply both sides by E, that is

$TE= 3U$

Now we need to get rid of 3, and for that, we have to divide both sides by 3, that is

$U = \frac{TE}{3}$

6 0

4 years ago

A parallelogram has a base of 16 cm and a height of 4 cm What is the area of the parallelogram.

Mazyrski [523]

Answer:

64 cm^2

Step-by-step explanation:

The area of a parallelogram is found by using the formula: A= b*h

Where A is the area, b is the base, and h is the height.

A = 16 * 4

A = 64

6 0

3 years ago

Read 2 more answers

Select the correct answer

soldi70 [24.7K]

Answer:

The Expression h(-7) represents the output of h corresponding to the input of -7

Step-by-step explanation:

7 0

3 years ago

You are given the polar curve r = e^θ

galina1969 [7]

The tangent to $r(\theta)=e^\theta$ has slope $\frac{\mathrm dy}{\mathrm dx}$ , where

$\begin{cases}x(\theta)=r(\theta)\cos\theta\\y(\theta)=r(\theta)=\sin\theta\end{cases}$

By the chain rule, we have

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\frac{\mathrm dy}{\mathrm d\theta}}{\frac{\mathrm dx}{\mathrm d\theta}}$

and by the product rule,

$\dfrac{\mathrm dx}{\mathrm d\theta}=\dfrac{\mathrm dr}{\mathrm d\theta}\cos\theta-r(\theta)\sin\theta$

$\dfrac{\mathrm dy}{\mathrm d\theta}=\dfrac{\mathrm dr}{\mathrm d\theta}\sin\theta+r(\theta)\cos\theta$

so that with $\frac{\mathrm dr}{\mathrm d\theta}=e^\theta$ , we get

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{e^\theta\sin\theta+e^\theta\cos\theta}{e^\theta\cos\theta-e^\theta\sin\theta}=\dfrac{\sin\theta+\cos\theta}{\cos\theta-\sin\theta}=-\dfrac{1+\sin(2\theta)}{\cos(2\theta)}$

The tangent line is horizontal when the slope is 0; this happens for

$-\dfrac{1+\sin(2\theta)}{\cos(2\theta)}=0\implies\sin(2\theta)=-1\implies2\theta=-\dfrac\pi2+2n\pi\implies\theta=-\dfrac\pi4+n\pi$

where $n$ is any integer. In the interval $0\le\theta\le2\pi$ , this happens for $n=1,2$ , or

$\theta=\dfrac{3\pi}4\text{ and }\theta=\dfrac{7\pi}4$

i.e at the points

$(r,\theta)=\left(e^{3\pi/4},\dfrac{3\pi}4\right)$

and

$(r,\theta)=\left(e^{7\pi/4},\dfrac{7\pi}4\right)$

8 0

3 years ago