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olya-2409 [2.1K]
3 years ago
10

Complete the following statement: f(3)=_____

Mathematics
1 answer:
victus00 [196]3 years ago
4 0
Using this equation, f(3) = 23.

In order to find the value of f(3), we need to take the f(x) equation and put 3 everywhere we see x. Then we follow the order of operations to solve. So, let's start with the original. 

f(x) = 2x^2 + 5sqrt(x - 2) 

Now place 3 in for each x. 

f(3) = 2(3)^2 + 5sqrt(3 - 2)

Now square the 3.

f(3) = 2(9) + 5 sqrt(3 - 2)

Do the subtraction inside of the parenthesis. 

f(3) = 2(9) + 5sqrt(1)

Take the square root

f(3) = 2(9) + 5(1)

Multiply. 

f(3) = 18 + 5

And add. 

f(3) = 23

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What is the result when 1/8x - 2 5/7 is subtracted from 3 1/4x + 7 1/14
g100num [7]
Let's break it down:
We need an LCM, a least common multiple, so it's easier to subtract
3 1/4x + 7 1/14
-
1/8x - 2 5/7

3 1/4 is equivalent to 3 2/8     
2 5/7 is equivalent to 2 10/14

3 2/8x + 7 1/14        or you can break it down to two parts also
-                               3 2/8x - 1/8x = 2 1/8x
1/8x - 2 10/14          7 1/14 - (-2 10/14) = 9 11/14
------------------           - - = +
2 1/8x + 9 11/14
 


5 0
3 years ago
Help please someone i need help!!
ycow [4]

Answer:

c= 7

Step-by-step explanation:

6 0
2 years ago
Please help me with this ​
Ahat [919]
B, x=1

Explanation
14+7=21

8 0
3 years ago
Read 2 more answers
Mary spent half of her allowance going to the movies. She washed the family car and earned 6 dollars. What is her weekly allowan
chubhunter [2.5K]
X is her allowance

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5 0
3 years ago
10*80+(609-78)-10^2<br> help pls
Inga [223]
To solve this you will be needing to use PEMDAS! 
Parenthesis exponents multiply divide add subtract!
So first parenthesis...
609-78=531
So now we write the problem like this
10*80+531-10^2
Now exponents
10^2 is a exponent so that =10*10 which = 100
So we write it out again like this:  10*80+531-100
Now we need to multiply from left to write
So 10*80=800
Re-write it:
800+531-100
So now we need to add from left to write
800+531=1331
1331-100=1231
So your answer is 1231.
Does this help any?
6 0
3 years ago
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