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Schach [20]
3 years ago
14

Tomas got 3/4 of the questions correct on an exam. There were 24 questions on the exam. What number of questions did Tomas get c

orrect?
Mathematics
1 answer:
Airida [17]3 years ago
7 0

Answer:

18 questions

Step-by-step explanation:

In order to get the answer you have to multiply 3/4 by 24.

(3/4)(24) = 18

Therefore, Tomas got 18 questions correct.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

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One antifreeze solution is 20% alcohol. Another antifreeze solution is 12% alcohol. How many liters of each solution should be c
katrin [286]
Use this systems of equations to solve:

x = first antifreeze
y = second antifreeze

\left \{ {{.2x + .12y = .18(15)} \atop {x + y = 15}} \right.

Isolate y.

x + y = 15
Subtract x from both sides.
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Substitute y into the other equation.

.2x + .12(-x + 15) = .18(15)
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.2x - .12x + 1.8 = 2.7
Subtract 1.8 from both sides.
.08x = .9
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Substitute x in the equation that we isolated y in.

y = -11.25 + 15
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3 years ago
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<h3><em>Hope I helped you!</em></h3><h3><em>Success!</em></h3>
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Step-by-step explanation:

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