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Karolina [17]
3 years ago
8

3t + 5sqrt(t) - 2 = 0 solve by using substitution

Mathematics
2 answers:
notsponge [240]3 years ago
3 0

Answer:

The answer is t=1/9

Step-by-step explanation:

If we substitute sqrt(t) = u, then we can write the equation as 3u^2+5u-2=0.

Using the <em>quadratic formula</em>, we can solve that <u>u = 1/3 and u = -2.</u>

We can go back to our original substitution and say that <em>sqrt(t) = 1/3</em>. The sqrt(t) can not be -2 because a <u>square root can not be negative.</u>

If we solve the equation sqrt(t) = 1/3, we get that t=1/9.

dlinn [17]3 years ago
3 0
This is something that I haven’t learned yet but I think the answer is 25
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