Paden pays $2.10 for 5 1/4 pounds of bananas. Alyssa pays $3.25 for 6 1/2 pounds of bananas. Which is a better buy?

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

What is 100,000 in words

lesya [120]

That's "one hundred thousand".

3 0

3 years ago

Read 2 more answers

10 to the second power times 16.29

aksik [14]

Answer:

1629

Step-by-step explanation:

10 to the second power = 100

100 x 16.29 = 1629

3 0

2 years ago

What value of n makes the equation true?

dybincka [34]

1(2x^9y^n) (4x²y^10)-8x^11 y^20

1

2

10

30

(2x^9y^n) (4x²y^10)-8x^11 y^20 i say the answer 1 or 10

1

2

10

30