Determine whether the parabola y = −x2 + 15x + 8 opens up, down, left, or right.

1 answer:

7 0

Dy/dx=-2x+15

d2y/dx2=-2

Since the acceleration is a constant negative it has an absolute maximum value for y(x), thus it opens downward, as x decreases without bound as x approaches ±∞

You might be interested in

I need helppppppp plssss

Svet_ta [14]

9x +4 = 3x+16

6x=12 X=2........

6 0

3 years ago

Whats the x value of the solution to this system of equations x=2y-4 7x+5y=-66

Likurg_2 [28]

Answer:

x=2y−47x

Step 1: Add 47x to both sides.

x+47x=−47x+2y+47x

48x=2y

Step 2: Divide both sides by 48.

48x

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

four people in abes family are traveling to Canada for their vacation.They have four seats in the center section of the plane.Ab

melamori03 [73]

I think 12. I'm not sure though. The way I came up with that answer is the tree diagram. I used the numbers 1, 2, 3, 4, . Then I did the tree diagram method.

3 0

3 years ago

Use the definitions and theorems of this section to evaluate and simplify the following expression. Be sure to express answers w

kirza4 [7]

$\bf (b^4)^2\implies b^{4\cdot 2}\implies b^8$

8 0

3 years ago

Explain why a positive times a negative is a negative number.

prohojiy [21]

Explanation:

This can be explained by thinking numbers on the number line as:

Lets take we have to multiply a positive number (say, 2) with a negative number say (-3)

2×(-3)

Suppose someone is standing at 0 on the number line and to go to cover -3 , the person moves 3 units in the left hand side. Since, we have to compute for 2×(-3), The person has to cover the same distance twice. At last, he will be standing at -6, which is a negative number.

A image is shown below to represent the same.

Thus, a positive times a negative is a negative number.

8 0

3 years ago