3 years ago

If x = 11. Solve: 3(x - 6) =

Mathematics

1 answer:

Vlada [557]3 years ago

4 0

3(11-6) (substitution)
3(5) =15

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Answer:

$x = \frac {53} {45}$

Step-by-step explanation:

Step 1: Combine on the right side

$90x = 81 + 25$

$90x = 106$

Step 2: Divide both sides by 90

$\frac {90x} {90} = \frac {106} {90}$

$x = \frac {106/2} {90/2}$

$x = \frac {53} {45}$

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Answer:

x=7cm.

Step-by-step explanation:

A=1/2(a+b)h.

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3 years ago

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AleksandrR [38]

Hey there, we are going to use two formula's, the first formula is A=πr², and the second formula is d=2r. Now, we can solve for a, A=1/4πd²=1/4*π*6²=28.27433cm², Therefore, the answer is 28.26 cm 2

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