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natka813 [3]
4 years ago
11

Solve the following equation for x. x2 - 9x + 18 = 0

Mathematics
1 answer:
maksim [4K]4 years ago
3 0

Answer: x=3 or x=6

Step-by-step explanation:Factor the left side of the equation. Then set factors equal to 0.

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10 points + brainliest = 15 points!
zimovet [89]

Answer:

(2x^2+1)(4x+3)

Step-by-step explanation:

8x^3 + 6x^2 + 4x+3

Split into two groups

8x^3 + 6x^2       + 4x+3

Factor out 2x^2 from the first group and 1 from the second group

2x^2( 4x+3)  +1( 4x+3)

Factor out (4x+3) from each group

(4x+3) (2x^2+1)

Rearranging the order

(2x^2+1)(4x+3)

3 0
4 years ago
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100 POINTS+ BRAINLYEST❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
Karo-lina-s [1.5K]

Step-by-step explanation:

The vertex form of a parabola can be written as

y =  {a(x - h)}^{2}  + k

where (h, k) are the coordinates of the parabola's vertex. The vertices of the functions are as follows:

a) (3, 5)

b) (-7, 3)

c) (4, 0)

d) (0, -1)

e) (-1, -5)

f) (-1, -5)

7 0
3 years ago
3x-91>-87 AND 17x-16>18
kirill [66]

3x-91 > -81\ \ \ \ |+91\\\\3x > 10\ \ \ \ |:3\\\\x > \dfrac{10}{3}\\\\17x-16 > 18\ \ \ \ |+16\\\\17x > 34\ \ \ \ |:17\\\\x > 2\\\\Answer:\ 2 < x < \dfrac{10}{3}\to x\in\left(2,\ \dfrac{10}{3}\right)

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3 years ago
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The angle of rotation at which point A’ coincidences point
anygoal [31]

Answer:

216 degrees

Step-by-step explanation:

Given that ABCDE is a regular pentagon.

Hence each angle would equal = {2(5)-4}/5 right angles

=6(90)/5 =108 degrees

Since regular pentagon rotation will not disturb the shape.

When counterclockwise rotated, if 108 degrees rotated A would become E.

For another 108 degrees A would come to D

Hence angle required for rotation for A to coincide with D = 2(108)

=216 degrees

8 0
3 years ago
What is the distance between y=x-11 and y=x-7
gladu [14]
You only need to look at the y intercepts.
-11 - -7 is -4, but you can't have a negative distance so it's just 4
7 0
3 years ago
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