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liraira [26]
3 years ago
14

In September, Jerry read for 2/5 of an hour every day for 20 days. How many

Mathematics
1 answer:
Effectus [21]3 years ago
7 0

Answer:

Step-by-step explanation:

- 2/5 of an hour is equal to 24 min

- 24 times 20 is 480 minuets during September

- 480 minuets is 8 hours

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Line l and line m are straight lines. What is the measure of angle y?
qwelly [4]

Answer: 190

Step-by-step explanation:

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3 years ago
A 5-gallon jug of cleaning solution contains 6% bleach. How much pure water should be added to it to dilute to 4% bleach?
mihalych1998 [28]
Let's bear in mind that 5 gallons with a solution of 6% bleach, contains some water plus some bleach, how much bleach?  well, is just 6% of 5 gallons or namely (6/100) * 5 gallons, or 0.30 gallons.

if we use "x" gallons of water, well pure water has no bleach, so is 0% bleach, and it has a (0/100) * x or 0x gallons of bleach.

the mixture will be say "y" gallons, and is 4% bleach, so (4/100) * y is 0.04y gallons in the mixture of bleach.

\bf \begin{array}{lcccl}
&\stackrel{gallons}{quantity}&\stackrel{\textit{\% of bleach}}{amount}&\stackrel{\textit{gallons of bleach}}{amount}\\
&------&------&------\\
\textit{pure water}&x&0.00&0x\\
\textit{6\% solution}&5&0.06&0.3\\
-----&------&------&------\\
mixture&y&0.04&0.04y
\end{array}
\\\\\\
\begin{cases}
x+5=\boxed{y}\\
0x+0.3=0.04y\\
---------\\
0.3=0.04\left( \boxed{x+5} \right)
\end{cases}
\\\\\\
0.3=0.04x+0.2\implies 0.1=0.04x\implies \cfrac{0.1}{0.04}=x\implies 2.5=x
3 0
3 years ago
Prove that these two triangles are congruent.
fredd [130]

Answer:

thank for the pointshhhhfgtf5ttctctx4dd5y8hhousjshs

6 0
3 years ago
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erastovalidia [21]

Answer

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Step-by-step explanation:

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3 years ago
Sarah counts the stamps in his collection. Steven has three more than twice as many stamps as Sarah. if Sarah has n stamps, writ
kondaur [170]

Answer:

3x2=6

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steven has three times as much as sahrah so she is going to have 6 stamps

6 0
3 years ago
Read 2 more answers
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