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vampirchik [111]
3 years ago
15

PLEASE PLEASEEEEEEE HELPPPPPPPP

Mathematics
2 answers:
Rufina [12.5K]3 years ago
7 0

Answer:

Set  2 x 2 − 6 x − 8  equal to  0 . 2 x 2 − 6 x − 8 = 0

Step-by-step explanation:

Those are the zeros

Please give me brainliest

soldier1979 [14.2K]3 years ago
7 0

So you definately wrote something wrong but I will assume the 6x^2 was meant to be just 6x.

2x^2 + 6x + 2 = 0

x^2 + 3x + 1 = 0

I can't seem to find a better way than to simply use the quadratic formula:

(-3 + sqrt(9 - 4*1*1))/2 \approx -0.382

(-3 - sqrt(9 - 4*1*1))/2 \approx -2.62

So the zeroes for this function are at

(-0.382, 0) and (-2.62, 0)

Or exactly:

((-3 + sqrt(9 - 4*1*1))/2, 0) and ((-3 - sqrt(9 - 4*1*1))/2, 0)

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What is the length of a diagonal of a cube with a side length of 10 cm? StartRoot 200 EndRoot cm StartRoot 210 EndRoot cm StartR
DIA [1.3K]

Answer:

10V3 cm= square root of 300

Step-by-step explanation:

the diagonal ^2=10^2+(10V2)62=100+200=300

the diagonal is 10 V3

8 0
3 years ago
Read 2 more answers
I need help please. This is due soon
Snezhnost [94]

Answer:

x i think

Step-by-step explanation:

5 0
3 years ago
suppose a ladder 20 feet long is placed against a vertical wall 20 feet high. How far would the top of the ladder move down the
Taya2010 [7]
You can use the pythagoras theorem.

20^2=5^2+x^2

x^2=400-25
x^2=375

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The answer is 0.64 feet :)
5 0
3 years ago
(7x^3)(3x^7) your answer should be a monomial in standard form
Colt1911 [192]

Answer:

i think its 21x^10

Step-by-step explanation:

7 0
4 years ago
Please help me!!!!!! <br><br>What is the measure of angle Z?<br><br>​
rodikova [14]

Answer:

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Step-by-step explanation:

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