A firefighter truck can hold 3000 gallons of water. A firefighter can deliver 160 gallons of water every 2 minutes. How long wil
1 answer:
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Given two points. we can find the equation of a line passing through the points
The formula to be used is:
where
=>
The next step is to cross multiply
=>
Divide both sides by 6 and make x the subject
x=3
Answer:
=2
Step-by-step explanation:
We have to make the fractions equal so we can add them
1 ×4= 1
×3=
1+
=2
Answer:
The person invested $3500 at 7% and $2500 at 5%
Step-by-step explanation:
We can say that because the investment is equal both in one as in another, where x is the income from the investment.
Solving the equation we have:
Then to get the incomes:
At 7%:
And at 5%:
Finally we can demonstrate the answer because the income at 7% + income at 5% are 3500+2500=$6000