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FrozenT [24]
2 years ago
6

Need help. pls help. i suck at math. math is a no no for me. help me pls.​

Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
5 0

Answer:

A5#A

Step-by-step explanation:

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Of the following approximate conversions of Fahrenheit into Celsius, which is most accurate?
asambeis [7]

Answer:

its B

Step-by-step explanation:

7 0
3 years ago
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
In 3 stores the same detergent is on special. Which store offers the Best Buy? explain
nikklg [1K]
$12.48/6= $2.08 
$14.42/7= $2.06 
$10.35/5= $2.07 
So you are looking for the best deal. 
The best deal would be: 
B.) 7 bottles for $10.35 
Hope that helps!! 
Have a wonderful day!! 
7 0
3 years ago
Answer these 3 questions ASAP pls..
matrenka [14]
That’s the answers hope this helps.

7 0
3 years ago
Find the measure of the are or central angle indicated. Assume that lines which appear to be
Alina [70]

9514 1404 393

Answer:

  ?° = 153°

Step-by-step explanation:

The measure of an arc is the same as the measure of the central angle it subtends. The arc is marked 153°. The central angle (?°) has that same measure.

  ?° = 153°

5 0
3 years ago
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