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2 years ago

Can you please answer number 82

Mathematics

1 answer:

hichkok12 [17]2 years ago

8 0

A.) the answer is 2x+y+7
b.)the answer is 2x+7y-9
c.)the answer is 24x+48
d.)the answer is 24x+6
e.)the answer is 5x+9

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Flying with the wind a plane went 198 mph. Flying into the same wind the plane only went 162 mph. Find the speed of the plane in

olganol [36]

Answer: speed of plane in still air is 180 miles per hour

speed of the wind is 18 miles per hour

Step-by-step explanation:

Flying with the wind, the plane went 198 miles per hour. This means if was flying in the same direction with the wind. This is same as the speed in still air because there was no opposition from the wind.

Flying into the same wind the plane only went 162 mph. This means that the plane flew against the wind

Let x = the speed of the plane

Let y = the speed of the wind

when flying with the wind,

x + y = 198 - - - - - - -1

When flying against the wind,

x - y = 162 - - - - - - - -2

Subtracting equation 2 from equation 1,

y - - y = 198 - 162

2y = 36

y = 36/2 = 18 miles per hour

x = 198 - y = 198 -18

x = 180 miles per hour

4 0

3 years ago

Help me please thank you so much

VikaD [51]

The third one down, I think!!!!

3 0

3 years ago

Two cargo ships are sailing a direct course into harbor. Ship A is 22 miles from harbor. Ship Bis sailing into harbor on a cours

s344n2d4d5 [400]

Answer:

The distance of ship B from the Harbor is 32.26 miles

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced Equations.

I have added a visual aid of the problem. As we can see the courses of both ship to the harbor forms a triangle with ship B being the hypotenuse. Since we are given the distance of the course for ship A and the angle between both ships, we can use this information with the <u>COSINE operator</u> to solve for the length of the course of ship B.

$cos(x) = \frac{adjacent}{hypotenuse}$

$cos(47) = \frac{22miles}{hypotenuse}$ .... flip both fractions.

$\frac{1}{cos(47)} = \frac{hypotenuse}{22miles}$ .... multiply both sides by 22

$\frac{22mi}{cos(47)} = hypotenuse$

$32.26mi = hypotenuse = B$

So the distance of ship B from the Harbor is 32.26 miles

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

3 0

3 years ago

$46 shoes; 2.9% tax some one please help me and i'm new in this site

ZanzabumX [31]

If you would like to know the value of the 2.9% tax, you can calculate this using the following steps:

2.9% tax of $46 shoes = 2.9% * 46 = 2.9/100 * 46 = $1.334

If you would like to know what is the whole price you have to pay for the shoes (including the tax), you have to add $46 and $1.334:

$46 + $1.334 = $47.334

8 0

3 years ago

2x - 3y = 16

KIM [24]

Answer:A

Step-by-step explanation:

8 0

3 years ago

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