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Lelu [443]
3 years ago
15

Please explain this, I have no idea how to do it!

Mathematics
2 answers:
Art [367]3 years ago
8 0

Answer:

t=40.5

Step-by-step explanation:

T likely stands for time. but I suspect you haven't given us the full question because the piece you gave us doesn't determine what T stands for. either way, t is your variable. could be substituted for x or any other variable.

t2=81

isolate t

/2

t= 81/2

t= 40.5

inn [45]3 years ago
7 0

Answer:

t = 9

Step-by-step explanation:

t² = 81

√t² = √81

t = 9

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Step-by-step explanation:

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2 years ago
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weeeeeb [17]

Answer:

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Step-by-step explanation:

4x-3+2x+21=60            4(7)-3                  2(7)+21

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5 0
3 years ago
Explain (1+y)^2 how does it turn into 1+2y+y^2 ? i don't understand
Greeley [361]
I will show you the steps on how you get that answer and if you have any questions after that let me know and I'd be more than happy to help answer them for you.
The first step for solving (1 + y)² is to use the equation (a + b)² = a² + 2ab + b² to expand the expression.
1² + 2 × 1y + y²
1 raised to any power equals 1,, so remove the power.
1 + 2 × 1y + y²
Calculate the product of 2 × 1y.
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Finally,, use the commutative property to reorder the terms.
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Let me know if you have any further questions.
:)
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Step-by-step explanation:

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