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Delicious77 [7]
3 years ago
6

I’m so confused I need help please!!

Mathematics
2 answers:
shutvik [7]3 years ago
6 0

Answer:

5. 9 8. 2\sqrt{10}

Step-by-step explanation:

a²+b²=c²

so for #5 12²+b²=15²

144+b²=225 (subtract 144 from both sides)

b²=81

b=9

For #8

9²+b²=11²

81+b²=121 (subtract 81 from both sides)

b²=40

b=\sqrt{40}

\sqrt{40}=

2\sqrt{10}

spayn [35]3 years ago
6 0
What they said !!!!!!!^
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valentina_108 [34]
  • Answer:

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  • Step-by-step explanation:

<em>38 = 2×19</em>

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7 0
3 years ago
Given the functions, fx) = x - 8 and g(x) = x2 + x - 1, perform the indicated operation. When applicable, state the domain
adell [148]

Answer:

A

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(fg)(x) = f(x) × g(x)

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x(x² + x - 1) - 8(x² + x - 1) ← distribute both parenthesis

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4 0
3 years ago
Use 3.14 for r. Round your answers to
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I think its A........ I don't really know.

Step-by-step explanation:

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