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Lisa [10]
2 years ago
6

X^2-x-42=0 Help I just need the line of symmetry

Mathematics
1 answer:
siniylev [52]2 years ago
4 0

Answer:

Step-by-step explanation:

answers:      x = 7

    x = -6

let me know if you need anymore help.

mark me brainliest please.

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Gre4nikov [31]

Answer:it's basically saying 60= 1 hour to walk 5 miles

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A space traveler saw 17 stars. All but 8 disappeared into a black hole. How many were left?
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3 years ago
Find the first five terms of the sequence given by a 1 = 2, a n = 3 a n -1 - 1.
lara31 [8.8K]

Answer:

2, 5, 14, 41, 122

Step-by-step explanation:

Using the recursive rule with a₁ = 2

a₂ = 3a₁ - 1 = 3(2) - 1 = 6 - 1 = 5

a₃ = 3a₂ - 1 = 3(5) - 1 = 15 - 1 = 14

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a₅ = 3a₄ - 1 = 3(41) - 1 = 123 - 1 = 122

The first 5 terms are 2, 5, 14, 41, 122

8 0
2 years ago
Read 2 more answers
Use the discriminant to determine the nature of the roots of the following equation.
kvv77 [185]

Discussion

The discriminate is b^2 - 4*a*c

The general equation for a quadratic is ax^2 + bx + c

In this equation's case

a = 1

b= -5

c = - 3

Solve

(-5)^2 - 4*(1)*(-3)

25 - (-12)

25 + 12

37

Note

Since the discriminate is > 0, the roots are real and different. The roots do exist and there are 2 of them.

4 0
2 years ago
Help! Please <br> Which one
vodomira [7]

Answer:

cosine

Step-by-step explanation:

4 0
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