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Alona [7]
3 years ago
12

If p(x)=3x^2-4, what is p(8a)

Mathematics
1 answer:
vredina [299]3 years ago
3 0
We are tasked to solve the value of p(8a) in the expression p(x)=3x^2-4.
This means that what would find the value of the expression when x=8a. To solve this, we simply substitute the value of x in the expression.

p(x)=3x^2-4
p(8a)=3(8a)^2-4
p(8a)=3(64a^2)-4
p(8a)=192a^2-4

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Have to show all work
Natasha2012 [34]

Answer:

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Step-by-step explanation:

Pythagoras Theorem:

a^2 +b^2 = c^2

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b^2 =11^2 - 10^2

b^2 = 121 - 100

b^2= 21

the heigh = √21 = 4.58

Answer: 4.58 ft

6 0
3 years ago
832,651,097 help me<br> With problem #3
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Answer:

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3 years ago
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7 0
3 years ago
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gayaneshka [121]

Answer: x > 75-69.95; you need five dollars and five cents more for free shipping ($5.05)

Step-by-step explanation: i believe this is the correct answer because as long as you have 75 dollars or more, then you will be good so that’s how i got the inequality. to find this you just subtract the amount needed (75) by the amount you have and you get your answer. oh and to be clear x represents the amount needed for free shipping. i am not sure if i understood the problem correctly so i apologize if it is incorrect. i hope this helped and good luck!

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