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Svetlanka [38]
3 years ago
8

Please help me on this

Mathematics
1 answer:
algol [13]3 years ago
4 0

Answer:

mean= 15.16

2/53

Step-by-step explanation:

addition of all the figures plus the next student divided by 6

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Please help!! Brainliest!!
meriva

Answer:

It's C.

Step-by-step explanation:

x + y + x + y + 3(y + 5)

= x + y + x + y + 3y + 15

= 2x + 5y + 15.

7 0
4 years ago
Evaluate f(9) given the function f(x)=3x2 – 11x - 21*
Blizzard [7]

Answer:

123

Step-by-step explanation:

The given function is :

f(x)=3x^2 - 11x - 21

We need to find the value of f(9). It can be done by putting x = 9 in the above function as follows :

f(9)=3(9)^2 - 11(9) - 21\\\\=243-99-21\\\\=123

So, the value of f(9) is 123.

3 0
3 years ago
What is the perimeter of a 81cm^2 area?
avanturin [10]
36 cm is the answer to your question
3 0
3 years ago
Use properties of exponents to complete the equivalent expression. (Take a look at the image).
kondaur [170]
The exponent would b 15



U just gotta solve it than u get 3375 than look for the square root of that and it’s 15over15
6 0
3 years ago
Renita's school is 2 miles from her house. She plans to leave 30 minutes before school and hopes to make it on time. How long wi
marishachu [46]

Answering is 20:

Step-by-step explanation:

Because it takes her 5 min for a half of mile so add it up and you get 20

8 0
3 years ago
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