Last option is the correct answer.
Step-by-step explanation:
Given that
Let x stand for the solution a and y stand for the solution B
So,
According to statement that
30 gallons have to be made
Solution A contains 29 percent bromine => 0.29x
Solution B contains 53 percent =>0.53y
And the mixture of 30 gallons contains 45% bromine
Following equations will be used for solving the problem
Hence,
Last option is the correct answer.
Keywords: Equations, Variables
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Answer:
Step-by-step explanation:
First one is 0.066 cents and the second is is 15.266 dollars
Answer:
A series of prime numbers starting with 9?
The answer is y = 2x + 3.
x - Kay's age
y - Jane's age
m - Mary's age
<span>Jane is 3 years older than Mary: y = m + 3
</span><span>Mary is twice as old as Kay: m = 2x
</span><span>
y = m + 3
m = 2x
Substitute m in the first equation:
y = 2x + 3
</span>
<u>What do we know so far</u>:
*we converted the number of laps into improper fractions
<u>We want to know the number of laps in an hour</u>
⇒ so we must find the rate which ⇒ lap/hour
<u>So William can run</u> ⇒ <u>10 laps in one hour</u>
Hope that helps!
