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zvonat [6]
3 years ago
11

Explain why a positive discriminant results in two real solutions.

Mathematics
1 answer:
melamori03 [73]3 years ago
5 0

Answer:

Step-by-step explanation:

If the discriminant b^2 - 4ac > 0, then the two solutions are

\frac{-b +- \sqrt{b^2 - 4ac} }{2a}, and in both cases, the value on the square root is > 0, so the result will always be a real number.

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PolarNik [594]

Answer:

68

Step-by-step explanation:

Find the vanilla first by dividing 420 by 7 and multiplying the quotient by 2 to get 120.

Then find the banana using the equation 35/100 = x/420, cross multiply to get 147.

Add 120 and 147 to get 267.

Subtract 267 from 420 to get 153.

Divide 153 by 9 to get 17.

Get the number of lemon cakes by multiplying 17 by 4.

The number of lemon cakes is 68!

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The blueprints show the deep end of the pool as 8 feet below ground, which
zalisa [80]
What’s the question here?
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3 years ago
which function has real zeros at x = −10 and x = −6? f(x) = x2 16x 60 f(x) = x2 − 16x 60 f(x) = x2 4x 60 f(x) = x2 − 4x 60
LiRa [457]

Answer:

Option A is correct

The function x^2+16x+60 has real zeroes at x =-10 and x =-6

Explanation:

Given: The real zeroes or roots are x = -10, and x = -6

To find the quadratic function of degree 2.

x^2- (\alpha+\beta)x + \alpha\beta =0 where α,β are real roots.   ....[1]

Here, α= -10  and β= -6

Sum of the roots:

α+β =  -10+(-6) = -10-6 = -16

Product of the roots:

αβ = (-10)(-6)= 60

Substitute these value in equation [1] we have;

x^2-(-16)x+60 = x^2+16x+60

Therefore, the quadratic function for the real roots at x =-10 and x =-6 ;

x^2+16x+60

8 0
3 years ago
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What is the answer to 4.9 = 0.7m
kolbaska11 [484]
4.9 = 0.7m            |(*10)
4.9 * 10 = 0.7m * 10
49 = 7m                |(:7)
49/7 = 7m/7
m = 7

6 0
3 years ago
Read 2 more answers
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