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dalvyx [7]
3 years ago
15

A plane flies 630 miles with the wind in the same time that it takes to fly 455 miles against the wind. If this plane flies at t

he rate of 270 mph in still air what is the speed of the wind
Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0
The speed of the windo is 217 mph in still air
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Consider the line y=-5/9x+6
Arlecino [84]

Answer:

See below in bold.

Step-by-step explanation:

Use the point-slope form of a straight line

y - y1 = m(x - x1)

Here m = -5/9 , x1 = 9 and y1 = -3:, so

y - -3 = -5/9(x - 9)

y + 3 = -5/9x + 5

y = -5/9x + 2  is the equation parallel to the given line.

The  line perpendicular to the given line will have a slope of - 1 / -5/9

= 9/5 so its equation is

y  + 3 = 9/5(x - 9)

y = 9/5x - 81/5 - 3

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What is a polygon with four right angles and four sides
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a square ///////////

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Read 2 more answers
-4-7=? I dont really understand
Anit [1.1K]

-4 + -7= -11

When adding  negative numbers if the are both negative then you add them. When you have a negative and a positive you subtract.  In this problem they just took out the plus sign.

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3 years ago
Given the same triangle from part C, if line segment AB measures 12 inches and line segment BC measures 5 inches what is the mea
exis [7]

Answer:

4.615 in

Step-by-step explanation:

Triangle ABC and ABD are similar because they have two corresponding congruent triangles that is right angle and ∠A. Triangle ABC and BCD are similar because they have two corresponding congruent triangles that is right angle and ∠C. Therefore Triangle ABC, ABD and BCD are similar. Since they are similar, then their sides are proportional in length.

In triangle ABC, using Pythagoras theorem:

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AC² = 12² + 5²

AC² = 144 + 25 = 169

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AC = √169 = 13 in

Using similar triangle for ΔABC and ΔABD:

\frac{AC}{AB}= \frac{BC}{BD} \\\\\frac{13}{12}=\frac{5}{BD}\\\\BD=\frac{12*5}{13}\\ BD=4.615\ in

5 0
3 years ago
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