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oksano4ka [1.4K]
3 years ago
12

The height of a triangle is 7m less than it’s base the area of the triangle is 30m^2 what is the length of the base what is the

height of the triangle
Mathematics
1 answer:
Ksju [112]3 years ago
3 0
If you know the base and area of the triangle, you can divide the base by 2, then divide that by the area to find the height. To find the height of an equilateral triangle, use the Pythagorean Theorem, a^2 + b^2 = c^2.
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Is anyone willing to help me with this? I tried adding this and still no answer. Please help..
GaryK [48]

Answer:   C. (-4, -2)

<u>Step-by-step explanation:</u>

First, eliminate one of the variables and solve for the remaining variable:

2x - 5y = 2      →    3(2x - 5y = 2)      →     6x - 15y = 6

3x + 2y = -16   →  -2(3x + 2y = -16)    →  <u> -6x - 4y = 32</u>

                                                                     -19y = 38

                                                                         y = -2


Next, replace "y" with -2 into either of the original equations to solve for x:

2x - 5y = 2

2x - 5(-2) = 2

2x + 10 = 2

2x         = -8

 x          = -4

                                       x = -4,  y = -2

<u>Check:</u>

Plug in the x- and y-values into the other original equation:

3x + 2y = -16

3(-4) + 2(-2) = -16

-12  +  -4     = -16

      -16         = -16   \checkmark

3 0
4 years ago
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Ket [755]
Y = -5/3x + 5
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8 0
3 years ago
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Mariulka [41]
Hello!

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So 4/5 of 20.5  is 16.4. 

Hope this helps  :))
5 0
4 years ago
PLEASE HELP ME! THANK YOU!
Elza [17]

9514 1404 393

Answer:

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Step-by-step explanation:

The average rate of change is the slope of the line between the two points. You can see from the graph that the slope is ...

  slope = rise/run = -5/2

The average rate of change on the interval is -5/2.

7 0
3 years ago
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