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Len [333]
3 years ago
6

Hurry please thank you!

Mathematics
2 answers:
VLD [36.1K]3 years ago
8 0

Answer:

A, B, D

Step-by-step explanation:

marshall27 [118]3 years ago
4 0

Answer:

A, B, D

Step-by-step explanation:

All of them have the same letter

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Evaluate 2/3-1/6
ladessa [460]
C 1/2 were gonna get it equivalent so 2/3 equals 4/6-1/6 that equals 3/6 and 3/6= 1/2 hope this helped
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On a test with 25 problems, grace got 88% correct.How many promblems did Grace get right.?
Fantom [35]
p\%=\dfrac{p}{100}\\-------------\\88\%=\dfrac{88}{100}=0.88\\\\88\%\ of\ 25\ is\ equal\ 0.88\cdot25=22\\\\Answer:\fbox{22}
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Convert large numbers into scientific notation 4.65 x 10^4=
Vikentia [17]
46,500 if I am not wrong.

Hope this helps!
:D
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3 years ago
Read 2 more answers
Convert 4.5 in to a fraction
jenyasd209 [6]

Answer:

9/2

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2. Multiply top and bottom by two: 9/2

6 0
3 years ago
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A pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters o
ladessa [460]
X = amount of the 18% solution

y = amount of the 40% solution

we know the 18% solution has only 18% of alcohol, the rest is maybe water or something, now, how many liters is 18%?  well, 18% of anything is just (18/100) * anything, so, 18% of x is just (18/100) *x or 0.18x, and that's how many liters are there.

likewise, how many liters are there in the 40% solution?  well, (40/100) * y, or 0.4y, that many.

we know the mixture has to yield 10 liters at 20% alcohol, how many liters of only alcohol is that?  well, (20/100) * 10, or 2 liters.

\bf \begin{array}{lccclll}
&\stackrel{liters}{amount}&\stackrel{alcohol~\%}{quantity}&\stackrel{liters}{alcohol}\\
&------&------&------\\
\textit{18\% solution}&x&0.18&0.18x\\
\textit{40\% solution}&y&0.40&0.4y\\
------&------&------&------\\
mixture&10&0.20&2
\end{array}

\bf \begin{cases}
x+y=10\implies \boxed{y}=10-x\\
0.18x+0.4y=2\\
----------\\
0.18x+0.4\left( \boxed{10-x} \right)=2
\end{cases}
\\\\\\
0.18x-0.4x+4=2\implies -0.22x=-2
\\\\\\
x=\cfrac{-2}{-0.22}\implies x=\cfrac{100}{11}\implies x=9\frac{1}{11}

how much of the 40% solution?  well y = 10 - x
3 0
3 years ago
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