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dezoksy [38]
3 years ago
9

Find the height, round to the nearest hundredthArea is 72units squared ​

Mathematics
1 answer:
salantis [7]3 years ago
4 0

Answer:

\large\boxed{h=10\dfrac{2}{7}}

Step-by-step explanation:

The formula of an area of a triangle:

A=\dfrac{bh}{2}

We ahve b = 14 and A = 72. Substitute:

72=\dfrac{14h}{2}             <em>multiply both sides by 2</em>

144=14h          <em>divide both sides by 14</em>

h=\dfrac{144}{14}\\\\h=\dfrac{144:2}{14:2}\\\\h=\dfrac{72}{7}\\\\h=10\dfrac{2}{7}

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Please can someone help?
alexandr402 [8]

Hey there! :)

Answer:

(5, -2), or x = 5 and y = -2.

Step-by-step explanation:

We can solve the two equations algebraically by eliminating a variable:

2x + 5y = 0

3x - 4y = 23

Eliminate the x variable by finding the least common multiple and multiplying both equations:

3(2x + 5y = 0)

2(3x - 4y = 23)

Distribute and subtract the bottom equation from the top:

6x + 15y = 0

6x - 8y = 46

------------------

0x + 23y = -46

23y = -46

y = -2.

Plug in y into an equation to solve for x:

2x + 5(-2) = 0

2x - 10 = 0

2x = 10

x = 5. Therefore:

The solution to this equation is (5, -2), or x = 5 and y = -2.

5 0
3 years ago
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Factor completely x2 - 8x + 16.
Deffense [45]

Answer:

(X - 4)(x - 4)

Step-by-step explanation:

x2 - 8x + 16

What two numbers multiply to 16 and add to -8

-4 * -4 = 16

-4 +-4 = -8

(x-4) (x-4)

(x-4)^2

6 0
2 years ago
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mezya [45]
Your answer is 0.45 I think
7 0
3 years ago
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At SMS, 25% of the teachers teach math. If there are 50 math teachers, how many teachers are there all together at SMS?
algol [13]

Answer:

200

Step-by-step explanation:

25 percent is known to be 1/4 of a number, so if 50 teachers represent 1/4 of all the teachers, that means that in order to get a full number, we must multiple 50 by 4 in order to get all 100% of the teachers.

By doing 50x4, we can conclude that 200 teachers teach at the school (aka 100% of all teachers)

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3 years ago
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Write as a fraction in simplest form<br> .56 =
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Answer:

14/25

Step-by-step explanation:

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