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Ostrovityanka [42]
3 years ago
11

Find the value of x, which makes the area of this triangle equal 72.

Mathematics
2 answers:
Ghella [55]3 years ago
5 0
Area of a triangle=1/2(base x height)
Area=72, Base=8, Height=2x-3
Plug it in.
72=1/2(8 x (2x-3))
72=1/2(16x-24)
72=8x-12
84=8x
x=10.5
sveticcg [70]3 years ago
5 0
Area=1/2 times base times height
height=2x-3
base=8

area=72
72=1/2 times (2x-3) times 8
72=(2x-3) times 4
divide both sides by 4
18=2x-3
add 3 to both sides
21=2x
divide both sides by 2
21/2=x
x=21/2=10.5
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Answer:

+ 16

Step-by-step explanation:

x² - 8x = - 10

to complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 4)x + (- 4) = - 10 + (- 4)²

x² - 8x + 16 = - 10 + 16

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2 years ago
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Step-by-step explanation:

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3 years ago
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bixtya [17]

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6 0
2 years ago
If the hypotenus is 41 inches, and one of the legs is 40 inches what is the length of the other Leg
andre [41]
You find the answer through the Pythagorean theorem

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b = ?
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i hope you found this helpful!
7 0
3 years ago
Which expression shows a sum of five terms? (3 points)
Sav [38]

Answer:

5 + x + 5 + x + x

Step-by-step explanation:

We are given 4 expressions and we have to determine which expressions shows a sum of five terms.

We use the process of elimination:

5(x + 5)

=5x+25  (distributing 5)

This contains sum of only two terms, <u>eliminate</u>.

5x

It contains only 1 term, <u>eliminate</u>.

5 + x + 5 + x + x

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5.

Only contains 1 term, <u>eliminate</u>.

With this said, were left with:

5 + x + 5 + x + x

Which is the correct answer! :)

6 0
2 years ago
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