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Monica [59]
4 years ago
12

Assume that y varies inversely with x if y = 4 when x = 4 find y when x = 2​

Mathematics
1 answer:
ANEK [815]4 years ago
3 0

When two variables varies inversely with each other, their product is always constant.

Since y = 4 when x = 4, their constant product is 16.

So when x = 2, y = 8.

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The following graph represents the distance a commercial airplane travels over time, at cruising speed and an altitude of 35,000
ANEK [815]

Answer:

see the explanation

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Let

x ----> the time in hours

y ----> the distance in miles

<em>Find the value of k</em>

For the point (4,2268)

k=\frac{2,268}{4}=567\ mph

The slope represent the speed of the airplane

so

The linear equation is

y=567x

Part 1 :

The point (0,0) represents the starting point of the aircraft, when the time and distance are equal to zero. The cruising starts when time t = 0.

Part 2 :

The  point  (4, 2268) represents the plane after 4 hours of cruise , and shows it has traveled a distance of 2268 miles after 4 hours

3 0
3 years ago
Help please I need it please please help me in it
Snezhnost [94]

Answer:

115.08

Step-by-step explanation:

6 0
3 years ago
What is the surface area of the<br> rectangular prism below?
Vikki [24]

To Find Surface Area:

So Surface area is found according to this equation SA=2lw+2lh+2hw

6and 1/2 times 2 is 13 that would be the 2 sides

then you do 3 times 6 1/2 which is 19 1/2, which is the top and bottom

finally you do 3 times 9 1/5 which is 27 3/5.

Now since 1/2 and 1/5 are not the same, we find the LCM or Least Common Multiple, which is 10 so 1/2 is multiplied by 5 which is 5/10 and 3/5 is multiplied by 2 which makes 6/10.

Adding 5/10 and 6/10 is 11/10 or 1 1/10

13+6+9=28

28+1 1/10 = 29 1/10

and finally because we did surface area it is 29 1/10 CM^2

__________________________________________________________

To Find Volume:

The Equation used to find volume is l*w*h

The Length is 6 1/2

Height is 9 1/5

width is 3

First, lets again convert the fractions

5/10 and 6/10

6 5/10 times 9 6/10 is 62.4

62.4 times 3 is 187.2

The .2 and be put into 2/10 or 1/5  so the FINAL answer is 187 1/5

Another way to check this is

6*9*3=162

1/5*1/2

Hope this helped :)

~Ukiahsmith1

5 0
3 years ago
What is the slope of the line below?<br> (4,5)<br> (-2,2)
Irina18 [472]

Answer:

1/2 or one half

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
19.27 - (- 42.1)= subtract
Damm [24]

Answer:

61.37

Step-by-step explanation:

when you subtract twice you are essentially adding

so

19.27 + 42.1 is that you are doing

and that is

61.37

8 0
2 years ago
Read 2 more answers
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