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3 years ago

8

A plane traveled 1176 miles to Phoenix and back. The trip there was with the wind. It took 14 hours. The trip back was into the

wind. The trip back took 28 hours. What is the speed of the plane in still air? What is the speed of the wind?

1 answer:

Lubov Fominskaja [6]3 years ago

5 0

The plane travels at 60 mph and the wind is blowing at 20 mph.

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Please help this is hard math

Rainbow [258]

Answer:

$y=-4x+2$

Step-by-step explanation:

First we find the slope of the line AB passing through the point (2,0)
line AB is perpendicular to the line $y=\frac{1}{4}x-3$ , this equation is slope intercept for, which is $y=mx+b$ so our m or slope is $\frac{1}{4}$
Since the slope of line AB is perpendicular to $m=\frac{1}{4}$ then we use the equation $slope of line1\times slopeofline2=-1$ , so what do we multiply $\frac{1}{4}$ by to get -1? -4 right, so that's the slope of line AB with the point (2,0)
Now line CD is parallel to line AB, that means it has the same slope as AB, so slope of CD is -4
So we make the equation $y-y_1=m(x-x_1)$ so m= -4 and our point is (-1,6)
$y-(6)=-4(x-(-1)\\y-6=-4x-4\\y=-4x-4+6\\y=-4x+2$ thats the equation of line side CD

6 0

3 years ago

Read 2 more answers

What is the area if a triangle with a base of 7x and a height of 8x expresssed as a monomial

Ede4ka [16]

Answer:

Step-by-step explanation:

$Area=\frac{1}{2}*b*h\\\\=\frac{1}{2}*7x*8x\\\\=7x*4x\\\\=28x^{2}$

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3 years ago

Bianca bought 3 pounds of hard candies at the candy store if each pound of hard candy cost $2.90 and she paid with a twenty doll

Ksivusya [100]

Answer:

11.30$

Step-by-step explanation:

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3 years ago

Same this for me but 6,912 and 288 please help

Svetllana [295]

Answer:

what is the question

Step-by-step explanation:

Questions for answers

4 0

4 years ago

A line passes through (-1,7)and(2, 10)

kumpel [21]

Slope
m = (y2-y1)/(x2-x1)
m = (10 - 7)/(2 --1)
m = 3/3
m = 1

To find the equation
y = mx + b
m is slope
y = 1x + b
plug in one of the equations to solve for b
10 = 1(2) + b
10 = 2 + b
subtract 2 from both sides
8 = b

The equation is
y = 1x + 8
or you can write it as
y = x + 8

Hope this helps

3 0

3 years ago