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In-s [12.5K]
3 years ago
8

Can someone help me !!

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

x = 15

Step-by-step explanation:

Create the proportion: 5/7 = x/21

Multiply both sides by 21: 15 = x

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6636=3<br> 8118=4 <br> 2212=0<br> 8688=?<br> 5971=?
pochemuha
6636 has 3 circle so 6636=3
8118 has 4 circle so 8118=4
2212 has 0 circle so 2212=0
8688 has 7 circle 8688=7
5971 has 1 circle 5971=1
6 0
2 years ago
10x+9=4x -9 solve <br><br> please help
Neporo4naja [7]

Answer:

x = -3

Step-by-step explanation:

To solve this, you need to isolate the variable x, this means only one side of the equation should have the variable x. To do this, you need to do the opposite operation from what's given (if it's addition, use subraction; if it's multiplication, use division; these work vise versa)

  • Subtract 9 from both sides of the equation. This gives you 10x = 4x - 18.
  • Subtract 4x from both sides of the equation. This gives you 6x = -18.
  • Divide both sides by 6. This gives you x = -3

The final answer is x = -3

7 0
3 years ago
The Beechcraft 1900D is a commuter airplane with a fuel capacity of 665 gallons. The function that represents how the amount of
nalin [4]

Given:

The  function that represents how the amount of fuel changes as a function of distance flown is

f(x)=-0.9x+665

where x represents miles flown, and f(x) represents the amount of fuel remaining.

To find:

The rate of change for this scenario.

Solution:

The slope intercept form of a linear function is

y=mx+b        ...(i)

Where, m is the slope or rate of change and b is the y-intercept.

We have,

f(x)=-0.9x+665        ...(ii)

On comparing (i) and (ii), we get

m=-0.9

Therefore, the rate of change for this scenario is -0.9. It means, the amount of fuel in the airplane is decreasing by 0.9 gallons per mile.

8 0
3 years ago
A line that includes the points (-10, 6) and (-9, h) has a slope of -8. What is the value of h?
Nutka1998 [239]
H=4
Hope this helps you !!!!
7 0
3 years ago
Find the value of PT PT = 5x + 3 and TQ 7x - 9
77julia77 [94]
Is there anything more to this question? Like are PT and TQ equal?
5 0
3 years ago
Read 2 more answers
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