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Naya [18.7K]
2 years ago
5

How many gallons of a 80% antifreeze solution must be mixed with 60 gallons of 30% antifreeze to get a mixture that is 70% antif

reeze?
Mathematics
1 answer:
Alchen [17]2 years ago
8 0
Let x be the number of gallons.

(x)(80%) + (60)(30%) = (x+60)((70%)

0.8x + 18 = 0.7x +42

0.8x - 0.7x = 42-18

0.1x = 24

and x = 240 Gal.

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goblinko [34]
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The nth term of the sequence is n^2 + 20 <br> How many terms in the sequence are less than 50
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Answer:

5 terms

Step-by-step explanation:

nth term of the sequence =n^2 + 20

an= n^2 + 20

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Hence, terms in the sequence are less than 50 are first 5 terms

6 0
2 years ago
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