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Anika [276]
3 years ago
13

A triangle with an area of 202.5 has a height that measures 15 find its base

Mathematics
1 answer:
Papessa [141]3 years ago
8 0
The area = 1/2 * base * height

202.5 = 1/2 *  base * 15

measure of the base =  202.5 / (1/2 * 15)

=   27 answer
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Which expression is equivalent to (x^2 -8) - (-2x^2+4)?​
Phoenix [80]

Answer:

D) 3x^2 - 12

Step-by-step explanation:

Using PEMDAS;

There is no need to evaluate the part of the equation (x^2 - 8) because is no need to, as it is already in its simplest form.

We must evaluate the part of the equation continuing with, "- (-2x^2+4)," as it is not in its simplest form.

Evaluating "- (-2x^2+4)":

Step 1: Distributing the negative

Once distributing the negative symbol amongst the values within the parenthesis according to PEMDAS, we get "2x^2 - 4" as the product.

Step 2: Consider the rest of the equation to evaluate

Since the part of the equation is still in play here as it is a part of the original equation to be solved, we must evaluate it as a whole to get the final answer.

Thus,

x^2 -8 + 2x^2 - 4 = ___

*we can remove the parenthesis as it has no purpose, since it makes no difference.

Evaluating for the answer, we get,

x^2+2x^2 + (-8 - 4) = 3x^2 - 12

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3 0
3 years ago
−7/8 −(−5/6) ​ in simplest form
svp [43]

Answer:

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Step-by-step explanation:

-7/8 - (-5/6)

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-7/8 + 5/6

Get a common denominator

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-42/48 + 40/46

-2/48

-1/24

3 0
2 years ago
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