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Ostrovityanka [42]
3 years ago
11

Please help ASAP! 20 Points!

Mathematics
1 answer:
AveGali [126]3 years ago
3 0
The answer is B. That is not a valid way to sample as it is not randomly selected.
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What is the solution for 5x^2-x+6=0
kati45 [8]

The easiest way to solve this problem is by using the Pythagorean theorem :D

Pythagorean theorem: [-b +- sqrt(b^2 - 4ac)]/2a

5 = a

-1 = b

6 = c

therefore, by plugging these values in!

[-(-1) +- sqrt((-1)^2 - 4(5)(6))]/2(5)

[1 +- sqrt(1 - 120)]/10

Oh so we're using imaginary numbers, so in this case you'll need to know that i = sqrt(-1), so keep this in mind (I can see why this was so difficult)

[1 +- sqrt(119)*i]10

answers:

( 1 + i*sqrt(119) ) / 10

( 1 - i*sqrt(119) ) / 10

7 0
2 years ago
What is the area of a triangle that has a height of 6 feet and a base length of 7 feet?
frez [133]

Answer:

area = 21 feet^2

Step-by-step explanation:

Area of a triangle is 1/2(base*height)

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6 0
3 years ago
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The product of some negative number and 10 less than three times that number is 8 . find the num
Oksanka [162]
-x(3x-10)=8
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{x=2 OR x= 4/3}
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Evgesh-ka [11]

Answer:

Its D.

Step-by-step explanation:

Just did it.

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In order to ascertain the suitability of a candidate for any popular position, his popularity can be assessed by taking a survey of the concerned sample.

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