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elena-14-01-66 [18.8K]
3 years ago
11

HELP QUICK will mark brainliest

Mathematics
2 answers:
slamgirl [31]3 years ago
7 0

Answer:

A

Step-by-step explanation:

(5x4) - 6 / 2 = x

Klio2033 [76]3 years ago
3 0

Answer:

OMGGG UHHH ITS EITHER A OR C B IS ELIMINATED IT WOULDN'T MAKE SENSE TO ADD PARENTHESIS

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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

Hence, the answer is D) 3x^2 - 12.

3 0
3 years ago
Which is the value of this expression when a=5 and k=-2
Zinaida [17]

Answer:

Option C is correct.

Step-by-step explanation:

We are given the expression:

(\frac{3^2a^{-2}}{3a^{-1}})^k

The value of a =5 and k = -2

Putting the values and solving

=(\frac{3^2*5^{-2}}{3*5^{-1}})^-2\\=(\frac{3^{2-1}}{5^{-1+2}})^-2\\=(\frac{3^{1}}{5^{1}})^-2\\\\=(\frac{3}{5})^-2\\if \,\,a^{-1} \,\,then\,\, 1/a\\=\frac{(3)^{-2}}{(5)^{-2}}\\ Can\,\,be\,\,written\,\,as\\\\=\frac{(5)^{2}}{(3)^{2}} \\=\frac{25}{9}

Option C is correct.

3 0
3 years ago
If the diameter of a circle is 2.5 inches what is the circumference of the circle
disa [49]

Answer:

7.85 inches

Step-by-step explanation:

4 0
3 years ago
) A certain amount has been divided into two parts in the ration ∶ . If the first part is ₹ 600 find i) the second part ii ) the
Colt1911 [192]

Answer:

shuavxc m

Step-by-step explanation:

jbscjpuzxrtvsuixjnndnk

5 0
2 years ago
Which combination of numbers in this group has the highest value? 4 + (-4), 4*|-2|, -4 * |2|, | -4 | * (-2), 4 + 2
Tamiku [17]
4+(-4)=4-4=0
4*|-2|=4*2=8
-4*|2|=-4*2=-8
|-4|*(-2)=4*(-2)=-8
4+2=6
the highest is 8 or 4*|-2|
6 0
3 years ago
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