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3 years ago

PLEASE HELP IS THIS RIGHT??????????AND EXPLAIN PLZZ

Mathematics

1 answer:

Anit [1.1K]3 years ago

6 0

Add like terms

-4x+x=-3x
6-2=4

So the simplified term is 4-3x

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Calculate the mean of the set of boys and girls below:

makvit [3.9K]

Answer:

Boys: 21.22 Girls: 16.89

Answer: A

Step-by-step explanation:

Add all the data points and divide it by the number of the data points.

7 0

3 years ago

Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.

Lina20 [59]

Answer:

Step-by-step explanation:

Given:

$f(x) = 4x^2 - 3$

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

$f(3) = 4(3)^2 - 3$

$f(3) = 4(9) - 3$

$f(3) = 36 - 3$

$f(3) = 33$

To find f(9), replace x with 9 in the given function

$f(9) = 4(9)^2 - 3$

$f(9) = 4(81) - 3$

$f(9) = 324 - 3$

$f(9) = 321$

Average rate of change = $\frac{f(b) - f(a)}{b - a}$

Where,

$a = 3, f(a) = 33$

$b = 9, f(b) = 321$

Plug in the values into the formula for average rate of change.

$= \frac{321 - 33}{9 - 3}$

$= \frac{288}{6}$

$= 44$

Average rate of change = 44

3 0

3 years ago

Can somebody help me ???

Ann [662]

It is D because if you look at the graph every 5 years the acres decrease by 20

6 0

3 years ago

What is the absolute value of a number?

Nadusha1986 [10]

Answer:

All of the whole numbers

Step-by-step explanation:

absolute value" means to remove any negative sign in front of a number, and to think of all numbers as positive

4 0

3 years ago

Read 2 more answers

if a rental car costs Caden $35 for the day, plus $0.33 per mile and his total bill was $78, how many miles did he drive?

Digiron [165]

78-35= 43
43/.33= 130.30

130.3 miles

7 0

3 years ago