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AlekseyPX
3 years ago
14

PLEASE HELP URGENT!!!!!! WILL GIVE BRAINLIEST!!!! MATH!!!!

Mathematics
2 answers:
max2010maxim [7]3 years ago
4 0
What’s your question?
Arisa [49]3 years ago
3 0

Answer:

ok

Step-by-step explanation:

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Am I right for number 3
Kazeer [188]

Answer:

Yes

Step-by-step explanation:

Great job on your work! Hope you get a good grade! :)

4 0
4 years ago
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What is -15.7 - (-8.2)?
cestrela7 [59]

Answer:

-7.5

Step-by-step explanation:

I used a calculator

8 0
3 years ago
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A large cylindrical cooler is 2 (1 )/2 feet high and has a diameter of 1 1/2 feet. It is filled 3/4 high with water for athletes
Ivahew [28]
So.. if hmm check the picture below, the radius is half that diameter

thus \bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\qquad 
\begin{cases}
h=height\\
r=radius=\frac{diameter}{2}\\
----------\\
h=2\frac{1}{2}\to \cfrac{5}{2}\\
diameter=1\frac{1}{2}\to \cfrac{3}{2}\\
r=\cfrac{\frac{3}{2}}{2}\to \cfrac{3}{4}
\end{cases}\implies V=\pi \left( \cfrac{3}{4} \right)^2\cfrac{5}{2}
\\\\\\
V=\pi \cdot \cfrac{9}{16}\cdot \cfrac{5}{2}\impliedby \textit{how much is }\frac{3}{4}\textit{ of that?}
\\\\\\
\cfrac{3}{4}\left( \pi \cdot \cfrac{9}{16}\cdot \cfrac{5}{2} \right)

simplify that away

now.. that's how much is in the cooler in cubic feet though, not in gallons

notice, our units were in feet, thus our volume is also in feet, just cubics

so. to know how many gallons, simply divide that by 231

\bf \cfrac{\frac{3}{4}\left( \pi \cdot \frac{9}{16}\cdot \frac{5}{2} \right)}{231}\quad gallons

4 0
4 years ago
For part of a science experiment, Andre adds 0.25 milliliters of dye to 12.3 milliliters of water. How many milliliters does the
sergiy2304 [10]

Answer:

12.55 milliliters

Step-by-step explanation:

0.25+12.3=12.55

Good luck!

5 0
3 years ago
The value of the expression 4 square root of 81^3 is ______.
Paladinen [302]

Answer:

If its written as the fourth root of (81^3) the answer is 27.

6 0
4 years ago
Read 2 more answers
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