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FromTheMoon [43]
2 years ago
9

Find the volume of this figure. round your answer to the nearest hundredth. if necessary

Mathematics
1 answer:
Shalnov [3]2 years ago
4 0
V=πr^2 h/3
Replace the given values in place of the expression
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A chemist wants to make 100 liters of a 44% acid solution. She has solutions that are 20% acid and 60% acid.
alexgriva [62]

the first solution is 20% acid, and say we'll be using "x" liters, so how many liters of just acid are in it?  well 20% of "x" or namely 0.2x.  Likewise for the 60% acid solution, if we had "y" liters of it, the amount of only acid in it is 0.6y.

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{liters of }}{amount}\\ \cline{2-4}&\\ \textit{1st solution}&x&0.20&0.2x\\ \textit{2nd solution}&y&0.60&0.6y\\ \cline{2-4}&\\ mixture&100&0.44&44 \end{array}~\hfill \begin{cases} x+y=100\\\\ 0.2x+0.6y=44 \end{cases}

x+y=100\implies y=100-x~\hfill \stackrel{\textit{substituting on the 2nd equation}}{0.2x+0.6(100-x)=44} \\\\\\ 0.2x+60-0.6x=44\implies -0.4x+60=44\implies -0.4x=-16 \\\\\\ x=\cfrac{-16}{-0.4}\implies \boxed{x=40}~\hfill \boxed{\stackrel{100-40}{y=60}}

7 0
2 years ago
explain why Shirley Chisholm was a political pioneer. __________________________________________________________________________
irga5000 [103]

Answer: She had already surprised everyone by becoming the first black woman in Congress after an upset victory in 1968. Then Shirley Chisholm signed up for work as a census taker in Brooklyn, where she represented a range of struggling neighborhoods.

It was a thankless task; many of the “enumerators” for the 1970 census quit because so many poor black and Hispanic residents refused to answer questions or even open the door.

Their distrust in government ran deep, The Times reported, with some fearing that giving up their personal information would lead to genocide.

Ms. Chisholm, a daughter of immigrants from Barbados who studied American history with the zeal of a woman determined to shape it, understood such sentiments. She also embodied what was needed to bring those New Yorkers into the fold. It wasn’t pontificating. It wasn’t condescending, or scolding; it required the same charm and resolve she showed first as an educator, then as a politician.

“I do not see myself as a lawmaker, an innovator in the field of legislation,” she wrote in her 1970 autobiography, “Unbought and Unbossed.” “America has the laws and the material resources it takes to insure justice for all its people. What it lacks is the heart, the humanity, the Christian love that it would take.”

8 0
3 years ago
Jessica packed 1-inch cubes into a box with a volume of 144 cubic inches how many layers of 1-inch cubes did Jessica pack
Rasek [7]
144 is your answer!!!
8 0
3 years ago
the local bakery uses 1.75 cups of flour in each batch of cookies. the k bakery used 5.25 cups of flour this morning
dolphi86 [110]
5.25
- 1.75
--------
=3.50

the k bakery used 3.50 more cups of flour than the local bakery.
3 0
3 years ago
2x-y+z=9 x+y-2z=-1 -x+2y+2z=-5
slega [8]
X=3
Y=-2
Z=1

Hope this helps.

3 0
3 years ago
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