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loris [4]
3 years ago
13

Use the discriminant to determine the number of solutions for the quadratic equation.

Mathematics
1 answer:
Leno4ka [110]3 years ago
7 0

Answer:

2 real solutions

Step-by-step explanation:

y = -x^2 + 3x + 5

First find the the discriminant:

using b² - 4(a)(b)

(3)²- 4(-1)(5)

=9+20

=29

since the discriminant is more than 0, there are 2 real solutions

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Your ship sinks and you swim to a nearby island. On this island, the inhabitants do not use money. The island residents use isla
natita [175]

Answer:

240 bananas

Step-by-step explanation:

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5 0
2 years ago
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If x=3+root8 and y =3- root 8 find 1/x^2+1/y^2
KonstantinChe [14]

Answer:

34

Step-by-step explanation:

x=3+√8

y =3-√8

now,

1/x^2+1/y^2

=1/(3+√8)² + 1/(3-√8)²

= [(3-√8)²+(3+√8)²] / (3+√8)²(3-√8)²            [L.C.M  = (3+√8)²(3-√8)² ]

=[(3-√8+3+√8)²-2(3-√8)(3+√8) ] / [(3+√8)(3-√8)]²  

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=[36-2(9-8) ]/ (9-8)²

=[36-2.1] / 1²

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3 0
3 years ago
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Nimfa-mama [501]

Answer:

y = - 3x + 5

Step-by-step explanation:

Given

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3 years ago
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velikii [3]
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7 0
2 years ago
Help on these precalc problems 14-20
Nadya [2.5K]
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Or when sin(x)=-1 (x=3pi/2)
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7 0
2 years ago
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