$\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\quad 
\begin{cases}
r=radius\\
h=height\\
------\\
r=1.25\\
h=5
\end{cases}\implies V=\pi \cdot 1.25^2\cdot 5$

4 0

3 years ago

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Marcus bought 2 candy bars for $0.79 each, a drink for $1.49, and a bag of chips for $3.29. Sales tax was included. How much mon

Oksana_A [137]

Answer:

Marcus spent $6.36.

Step-by-step explanation:

First off, the fact that tax is included makes it easier for you, you don't need to worry about any multiplying!

Alright, so, he bought 2 candy bars for $0.79 EACH - that's 2 * $0.79 = $1.58.

Next, a drink for $1.49 and a bag of chips for $3.29. That's $1.49 + $3.29 = $4.78.

Now you add those two numbers up: $1.58 + $4.78 = $6.36.

Therefore, Marcus spent $6.36!

7 0

3 years ago

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Please solve this question

oee [108]

Answer:

$\frac{1}{81}$

Step-by-step explanation:

Using the rule of exponents

$a^{-m}$ ⇔ $\frac{1}{a^{m} }$

Evaluating from the inside parenthesis outwards

$(-\frac{1}{3}) ^{2}$ = - $\frac{1}{3}$ × - $\frac{1}{3}$ = $\frac{1}{9}$ , then

$(\frac{1}{9}) ^{-2}$ = $\frac{1}{9^{-2} }$ = 9² = 81 , then

$(81)^{-1}$ = $\frac{1}{81}$

4 0

3 years ago