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Korvikt [17]
2 years ago
7

Pls help for 27b!!!!!!!

Mathematics
1 answer:
rodikova [14]2 years ago
6 0

Step-by-step explanation:

\beta

is a root of the quadratic

4 {x}^{2}  - 10x + 5

This quadratic isn't factorable so use the quadratic formula

- b +  -  \sqrt{ \frac{b {}^{2}  - 4ac }{2a} }

The plus and minus sign after b means we going to have two roots.

The roots are

\frac{5 +  \sqrt{5} }{4}

and

\frac{5 -  \sqrt{5} }{4}

We subsitue those values for Beta.

27a.

\frac{5}{2}

27b.

25

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Answer:

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Step-by-step explanation:

x2-x1/y2-y1

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4/5

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8 0
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Starting from left to right, we can see that the first zero, -2, goes through the x-axis. That means (x+2) is raised to an odd power. The second zero, -1, also goes through, so (x+1) is raised to an odd power. The last zero, 2, bounces off the x-axis, so (x-2) is raised to an even power. The only functions that satisfy this criteria are function 1 and 2.

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7 0
3 years ago
X=13+4x=22 please help
Andreyy89
X=13+4x. 13+4x=22
0=13+3x. 4x=9
3x=-13. x=9/4
x=13/3
4 0
2 years ago
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Contact [7]
2.6 x 6 = $15.6 . That’s the answer I’m pretty sure! Goodluck!
8 0
3 years ago
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