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kvasek [131]
2 years ago
13

Rebecca is a Texas resident and she plans to attend Texas Tech for all 4 years of college. She has a yearly

Mathematics
1 answer:
LenKa [72]2 years ago
6 0

Answer:

To complete $m dollars that will suffice Rebecca for her college education, she needs $(m - 60,000).

Step-by-step explanation:

Suppose Rebecca needs $m to complete her four-year college education, given that she has a yearly scholarship of $10,000, she would have $10,000 × 4 = $40,000 for the four years she would spend in college.

With her savings of $20,000, she has $20,000 + $40,000 = $60,000 in total.

To complete the required $m dollars for her college, she needs $(m - 60,000).

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Today only, a sofa is being sold at a 15% discount. The sale price is $782. What was the price yesterday?
PtichkaEL [24]

Answer:

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Step-by-step explanation:

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3 years ago
Sarah needs 30 liters of a 25% acid solution how many liters of the 10% and the 30% acid solutions should she mix to get what sh
sweet-ann [11.9K]

Answer:

7.5 L of 10% solution and 22.5 L of 30% solution

Step-by-step explanation:

Volume of 10% solution plus volume of 30% solution = total volume of 25% volume.

x + y = 30

Acid in 10% solution plus acid in 30% solution = total acid in 25% solution.

0.10 x + 0.30 y = 30 × 0.25

0.10 x + 0.30 y = 7.5

Solve the system of equations, using either substitution or elimination.  I'll use substitution:

x = 30 − y

0.10 (30 − y) + 0.30 y = 7.5

3 − 0.10 y + 0.30 y = 7.5

0.20 y = 4.5

y = 22.5

x = 30 − y

x = 7.5

Sarah needs 7.5 L of 10% solution and 22.5 L of 30% solution.

8 0
3 years ago
Read 2 more answers
Help me. The last person who answered this question just asked me for personal info.... so please just answer the question...
Lelechka [254]

Answer:

Step-by-step explanation:

so the least common denominator is 12, so:

multiply 3/4ab by three, which equals: 9/12ab

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3 0
2 years ago
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