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Semmy [17]
3 years ago
5

Make t the subject of the formula 2(a + t) = 5t + 7

Mathematics
2 answers:
cupoosta [38]3 years ago
8 0

Answer:

t \:  = ( \frac{2a - 7}{3} )

Step-by-step explanation:

2a+ 2t = 5t + 7

2a - 7 = 5t - 2t

2a - 7 = 3t

t = answer

snow_lady [41]3 years ago
3 0

Answer:

Step-by-step explanation:

2a + 2t = 5t + 7

2a - 7  =  3t

t =  (2a = 7) / 3

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A pharmacist has a 12% solution and a 20% solution of boric acid. How much of each should she use to make 80 grams of a 15% solu
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Step-by-step explanation:

If x = the amount of 12% and y = the amount of 20%, then x + y = 80

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We can solve the first equation for x or y. Let's do x.

x = 80 - y

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Answer:

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