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3 years ago

Please help! (Please do not answer with links or “idk but good luck”) 2(4z + 9) = 34

Mathematics

2 answers:

Zina [86]3 years ago

6 0

Answer: z=2

Step-by-step explanation:

Shtirlitz [24]3 years ago

3 0

Z = 2

Distribute: 8z + 18 = 34
Then subtract 18 from both sides
8z = 16
Divide both sides by 8 to isolate z

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I WILL GIVE BRAINLIEST!!!

zimovet [89]

Not equivalent to any of the given expressions.

Step-by-step explanation:

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3 years ago

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James and Sarah went out to lunch. The price of lunch for both of them was $60. They tipped their server 10% of that amount.

kvasek [131]

Answer:

$66

Step-by-step explanation:

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Hope this helps plz mark brainliest :D

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2 years ago

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Minchanka [31]

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3 years ago

Luis works 45 hours and earns 10 an hour. How much money would he earn in 3 weeks.

daser333 [38]

Answer: $1,350

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3 years ago

Express p in terms of q if

Irina-Kira [14]

$p=x^2+\dfrac{1}{x^2}\\\\p=\dfrac{x^4}{x^2}+\dfrac{1}{x^2}\\\\p=\dfrac{x^4+1}{x^2}\qquad(*)$

$q=x+\dfrac{1}{x}\\\\q=\dfrac{x^2}{x}+\dfrac{1}{x}\\\\q=\dfrac{x^2+1}{x}\qquad\text{square both sides}\\\\q^2=\left(\dfrac{x^2+1}{x}\right)^2\\\\q^2=\dfrac{(x^2+1)^2}{x^2}\qquad\text{use}\ \ (a+b)^2=a^2+2ab+b^2\\\\q^2=\dfrac{(x^2)^2+2(x^2)(1)+1^2}{x^2}\\\\q^2=\dfrac{x^4+2x^2+1}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+\dfrac{2x^2}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+2\qquad\text{subtract 2 from both sides}\\\\q^2-2=\dfrac{x^4+1}{x^2}\\\\\text{From (*) we have}\\\\\boxed{p=q^2-2}$

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3 years ago