Evaluate the expression shown 8(12+15)+4

Mathematics

2 answers:

JulsSmile [24]3 years ago

6 0

The answer to your answer is 220 after evaluating this expression. Hope i helped out.

elixir [45]3 years ago

3 0

220 is the correct answer.

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How do I solve this

anastassius [24]

$\bf \cfrac{x+2}{x^2+6x-7}$ so, that function is "defined", ok, what values of "x" are not in the domain, namely, what values can "x" take on and not make the function "undefined", well, you know, if we end up with a 0 at the denominator, like $\bf \cfrac{x+2}{0}$ then, we'd have an "undefined" expression...so... any values of "x" that make the denominator 0, are not really the ones we want, and thus they'd be excluded from the domain.

so, hmm which are those? let's check, let's set the denominator to 0, and solve for "x".

$\bf x^2+6x-7=0\implies (x+7)(x-1)=0\implies x=
\begin{cases}
-7\\
1
\end{cases}
\\\\\\
\textit{let's check, } x=-7\quad \cfrac{(-7)+2}{(-7)^2+6(-7)-7}\implies \cfrac{-5}{49-42-7}\implies \cfrac{-5}{0}
\\\\\\
x=1\quad \cfrac{(1)+2}{(1)^2+6(1)-7}\implies \cfrac{3}{1+6-7}\implies \cfrac{-3}{0}$

7 0

3 years ago

Simplify 7 to the power of 8 x 7 to the power of 3 x 7 to the power of 4 divide 7 to the power of 9 x 7 to the power of 5

Lemur [1.5K]

You can get the app Air Math I have the app and it helps a lot

7 0

2 years ago

Three times a number subtracted from the product of fifteen and the reciprocal of a number

ASHA 777 [7]

To write the problem out as an equation, let 'n' equal your number.

(15 x 1/n) - 3n

5 0

3 years ago