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vodka [1.7K]
2 years ago
13

Find the y-intercept for the parabola defined by this equation: y=2x2+x−1

Mathematics
1 answer:
Natalija [7]2 years ago
7 0

Answer:

(0, -1)

Step-by-step explanation:

The c value of the equation represents the y-intercept. c=-1 so the y-intercept must be (0,-1)

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5 -2x + 6y= -38<br> ? 3x – 4y = 32<br> •(-4, - 5)<br> •(-5, 4)<br> •(1, – 6)<br> (4, - 5)
Svet_ta [14]

Answer:

Option D (4, -5)

Step-by-step explanation:

This question can be solved by various methods. I will be using the hit and trial method. I will plug in all the options in the both the given equations and see if they  balance simultaneously.

Checking Option 1 by plugging (-4, -5) in the first equation:

-2(-4) + 6(-5) = -38 implies 8 - 30 = -38 (not true).

Checking Option 2 by plugging (-5, 4) in the first equation:

-2(-5) + 6(4) = -38 implies 10 + 24 = -38 (not true).

Checking Option 3 by plugging (1, -6) in the second equation:

3(1) - 4(-6) = 32 implies 3 + 24 = 32 (not true).

Since all the options except Option 4 have been ruled out, therefore, (4,-5) is the correct answer!!!

7 0
3 years ago
The current United States population is about 314,000,000 people. If an iPad costs $500.00, what would be the total cost of purc
Helga [31]

Answer:

157,000,000,000

Step-by-step explanation:

314,000,000 X 500

5 0
2 years ago
Suppose f(x)=x^3 find the graph of f(x+3)
hoa [83]

Replace x with x+3:

f(x+3) = (x+3)²

which is x² translated 3 units left

7 0
3 years ago
Select one of the factors of the quadratic expression.
masha68 [24]

Answer:

A) (x + 2)


Step-by-step explanation:

x^2 + 5x + 6

=(x +3)(x +2)

so (x+3) and (x+2) are the factors

7 0
3 years ago
The vertices of a swimming pool are E(5, 5), F(5, 20), G(35, 20), and H(35, 5). The endpoints of a line that divides the pool in
sleet_krkn [62]

Answer:

Step-by-step explanation:

Download pdf
3 0
3 years ago
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