A parabola intersects the x-axis at x=3, equals, 3 and x=9.

Answers

Answer 1
Answer:

Answer: x is 6

Step-by-step explanation:

where a and b are x intercepts given to us.

So rewriting in factored form:

y = (x-3)(x-9)

so now you have to simplify it using the formula y=ax^(2)+bx-c

y= x^(2)- 12x+27

so with this formula x=(-b)/(2a) we can find the x coordinate

x=(-(-12))/(2(1))

and the answer would be 6


Related Questions

Howcan you use a strip diagram to convert 136 oz into c?
I don’t know the correct answer please
Find the square root of 529
Writing to Explain Suppose you have a 100-mL cup, you can a 500-mL cup. List two different waysmeasure exactly 1 L.
Simplify the expression. (–5a^5b^5)^2(a^3b^3)^5

What are the three consecutive odd integers that equal 111? After that, answer this:Are there 3 consecutive odd integers that equal 1111?

Answers

odd integers are 1 more than even ones
even intergers are represetned as 2n where n is a whole number
odd=2n+1
consecutive odd integers are 2 apart from each other so therefor the numbers are 2n+1,2n+1+2, 2n+1+2+2 or 2n+1, 2n+3, 2n+5
so they add up to 111
2n+1+2n+3+2n+5=111
add like terms
6n+9=111
subtract 9 from both sides
6n=102
divide both sides by 6
n=17
numbers are
2n+1,2n+3,2n+5
subsitute
2(17)+1=34+1=35
therefor since the other sare 2 more
35,37,39 are the numbers


are there 3 that equal 1111? solve and see if it is true
2n+1+2n+3+2n+5=1111
add like terms
6n+9=1111
subtract 9 from both sides
6n=1102
divide both sides by 6
n=183.666666666666
n is not whole so the answer is NO

answer are 35,37,39 and NO
x- the number

x
x+2
x+4
======(+)
3x+6=111
3x=105
x=35

the numbers are 35 37 39

the second problem has the same logic

x
x+2
x+4
=====(+)
3x+6=1111
3x=1105
x=368, (3) it's not an integer number

AND IT"S CORRECT EXCELLENCY!
TAKE A PIECE OF PAPER, A PEN AND DO IT FOR YOURSELF!
you don't need to write an essay for a simple math exercise

The area of this rectangle

Answers

The answer is 36 m.

This is really simple. To solve, multiply the length and the width and BAM! There's your answer. So for this problem, multiply 12 by 3 and don't forget to include the unit measurement.

12 * 3 = 36
Area = 36 m

Hope this helps! :)

What is the opposite of the rational number -7.8

Answers

The opposite of the number -7.8 is 7.8
Opposite numbers are the numbers with the same magnitude but different signs. so the opposite of the -7.8 is 7.8 :)))
i hope this is helpful
have a nice day

(4-3√3)(2-√3)???? (the question marks signal the gap between the question and then me starting to distribute)4(2-√3)-3√3(2-√3)
I get stuck here!! Please help

Answers


You have two binomials.  I would just FOIL them:

First:           4 x 2 = 8

Outside:  4 (-√3) = -4√3

Inside:   -3√3 (2) = -6√3

Last:   -3√3 (-√3) = 9

Addummup:  8  -  4√3  -  -6√3  +  9  =  17 - 10√3

(4-3√3)(2-√3)
(4 - 3√3)(2 - √3) -> 4 x 2 = 8
(4 - 3√3)(2 - √3) -> -3√3 x 2 = -6√3
(4 - 3√3)(2 - √3) -> 4 x -√3 = -4√3
(4 - 3√3)(2 - √3) -> -3√3 x -√3 = 3√3 x √3 = √9√3 x √3 = √27 x √3 = √81 = 9

∴ (4-3√3)(2-√3) = 8 - 6√3 - 4√3 + 9

8 - 6√3 - 4√3 + 9
= 17 - 6√3 - 4√3
= 17 + (- 6 - 4)√3
= 17 - 10√3

Without decimals, you cannot go any further.
Tell me if I was confusing at all :)

UPDATED... AGAIN...

A student needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. The function f(r) relates the area of the cardboard piece, in square inches, to the radius r in inches. Which of the following shows a reasonable domain for f(r)?7 < r < 14

154 < r < 616

all positive integers less than 7

all positive integers between 14 and 154

Answers

The area of the circle by definition is given by:
 f (r) =  \pi  * r ^ 2
 For f (r) = 154:
 154 =  \pi  * r ^ 2
 Clearing r we have:
 r ^ 2 = 154 / 3.14 r =  √(154/3.14)  r = 7
 For f (r) = 616:
 616 = \pi * r ^ 2
 Clearing r we have:
 r ^ 2 = 616 / 3.14 r = √(616/3.14) r = 14
 Answer:
 
a reasonable domain for f (r) is:
 
7 <r <14

Answer:

7 < r < 14

Step-by-step explanation:

Please help fast!! I'll rate,Thanks&Mark brainliest!1.
Which is a simplified form of the expression -4(n + 1) – (n + 2)?
A. 2n + 3
B. -3n – 2
C. -4n – 5
D. -5n – 6

2.Which is a simplified form of the expression 3a + 7 – a – 7?
A. 2a
B. 4a
C. 2a + 14
D. 4a – 14

3.Which is a simplified form of the expression -2(x – 9) – x?
A. -3x + 18
B. 3x – 18
C. x – 9
D. x + 18

4.Which is a simplified form of the expression -5(y – 2) – 7y?
A. –12y + 10
B. 2y – 10
C. -2y + 10
D. 12y – 10

5.
Which is a simplified form of the expression -3x – 1 – 5x + 4?
A. -2x + 3
B. 2x – 5
C. 8x – 5
D. -8x + 3


6.
Which is a simplified form of the expression -7y – (2y + 4)?
A. -9y + 4
B. -9y – 4
C. -5y – 4
D. -5y + 4


7.Which is a simplified form of the expression 6(2t – 3) + 3(t + 5)?
A. 11t – 2
B. 12t – 8
C. 9t – 2
D. 15t – 3


8.Which is a simplified form of the expression -4(3r – 2) – 2(r + 1)?
A. 4r – 1
B. 10r – 7
C. -14r + 6
D. -12r – 1


9.
Which is a simplified form of the expression -6a + 2(2a + 2)?
A. -2a + 4
B. -2a – 4
C. 2a + 4
D. 2a – 4


10.Which is a simplified form of the expression -3p – 4 + 4p + 8?
A. -p – 4
B. 2p – 4
C. p + 4
D. 7p + 4
Please help fast! I promise i'll mark branliest,rate 5 and click Thanks!

Answers

1.b
2.a
3.d
4.b
5.a
6.c
7.b
8.d
9.c
10.d
1.D
2.A
3.A
4.A
5.D
6.B
7.D
8.C
9.A
10.C
;)