What is 2187 divided by 9 to the power 3?

Answers

Answer 1

Answer: no, you have to do exponents first.
9×9×9=729
2187÷729=3

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You sell pies at a farmers' market for $7.50 each. A group of 5 kids wants to pitch in equal1y to share one of your pies. How much will each of them need to pay to buy a whole pie together?

Answers

its 5 divided my 7.50 since each decided to pitch in to help by the pie

Since they all want to pay the same thing, all you have to do is divide $7.50 by 5 to get your answer, which is $1.50

What's the value of X

Answers

$(x+1)^2 -(x-1)^2 = 32 \n \nx^2+2x+1 -(x^2-2x+1)=32\n \nx^2+2x+1-x^2+2x-1=32\n \n 4x =32\ \ / :4 \n \nx=(32)/(4)\n \nx=8$

All the busy-work is on the left side.

1). Take care of the (x+1)² . . .

(x + 1)² = x² + 2x + 1

2). Take care of the (x-1)² . . .

(x - 1)² = x² - 2x + 1

The problem says that (the first expression) minus (the second expression) is 32 .

(x² + 2x + 1) - (x² - 2x + 1) = 32

Can you handle this ?
Only one more touchy point to take care of . . . removing the second parentheses.
Since there's a negative sign before it, that changes the sign of everything inside:

(x² + 2x + 1) PLUS (- x² + 2x - 1) = 32

Now you can just erase all the parentheses:

x² + 2x + 1 - x² + 2x - 1 = 32

Now I'm just going to write the things on the left side in a different order,
without changing anything:

x² - x² + 2x + 2x + 1 - 1 = 32

Isn't that neat ? ! ?
What you have now is:

4x = 32

Divide each side by 4 :

x = 8

Just watch how slick that works:

(x + 1)² - (x - 1)² = ?

(x + 1) = 9 (x - 1) = 7

(9)² - (7)² = 81 - 49 = . . . . . . . . 32 !

спасибо
Удачи

F(x) = 2x2 + 1 what is f(x) when x = 3 ?

Answers

Answer:

2x^2 +1 (x=3)

2(3)^2 +1

6^2 +1

36+1

Please help me in this with the steps.

Answers

Answer:

P is at (2, 7), and Q is at (6, 11).

The midpoint of PQ is at (4, 9), calculated as follows:

((2 + 6)/2, (7 + 11)/2) = (8/2, 18/2) = (4, 9)

2x+3y=3 and 3x-2y=11 what is the solution to the system

Answers

2x + 3y = 3
3x - 2y = 11

( 2x + 3y = 3 ) *3
6x + 9y = 9

( 3x - 2y = 11 ) * 2
6x - 4y = 22

subtract those two equations
13y = -13
y = -1
x = 3

Evaluate the function using the values.

Answers

Answer:

Blank 1: 3

Blank 2: 31

Step-by-step explanation:

f(x) = 2x + 7

Plug x as -2

2(-2) + 7

-4 + 7

= 3

Plug x as 12

2(12) + 7

24 + 7

= 31

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