Question

For the graph below, what should the domain be so that the function is at least 300?

graph of y equals minus 2 times the square of x plus 50 times x plus 300

x greater than or equal to 0

-5 is less than or equal to x which is less than or equal to 30

0 is less than or equal to x which is less than or equal to 25.

all real numbers

Answer 1

Please helpppp

Answer 2

What math is this ?

Answer 3

Algebra I Quadratic Functions and Graphs.

Answer 4

Hmmmmmmm . Yea I suck at math lmao .

Answer 5

Do you have answer choices to choose from ?

Answer 6

Yeah. They are there. They just dont say a, b, c, d, etc. Lol

Answer 7

x greater than or equal to 0

-5 is less than or equal to x which is less than or equal to 30

0 is less than or equal to x which is less than or equal to 25.

all real numbers

Answer 8

ohhh i see . One sec I'll try to figure it out . I'll let you know .

Answer 9

I'm not making any promises though

Answer 10

Okay thanks. :)

Answer 11

It's B. Lol Just figured it out

Answer 12

Bret threw a baseball up in the air. The following table represents the height f(t), in meters, of the ball above the ground at time t seconds:


Time (t)
(in seconds) Height f(t)
(in meters)
0 3
2 4
4 3
6 0


Which of the following is represented by the y-intercept of f(t)?
The ball touches the ground after 6 seconds.

The ball was thrown from a height of 3 meters.

The ball reaches a maximum height of 4 meters.

The ball reaches the maximum height in 2 seconds.

Answer 13

Yea I have no idea . I REALLY suck at math lmao

Answer 14

The ball was thrown from a height of 3 meters

Answer 15

Thanks

Answer 16

np

Answer 17

The steps to derive the quadratic formula are shown below:


Step 1 ax^2 + bx + c = 0
Step 2 ax^2 + bx = - c
Step 3 x^2 + b over a times x equals negative c over a
Step 4 x^2 + b over a times x plus b squared over 4 times a squared equals negative c over a plus b squared over 4 times a squared
Step 5 x^2 + b over a times x plus b squared over 4 times a squared equals negative 4 multiplied by a multiplied by c, all over 4 multiplied by a squared plus b squared over 4 times a squared
Step 6 the square of the quantity x plus b over 2 times a equals b squared minus 4 multiplied by a multiplied by c, all over 4 times a squared
Step 7 x plus b over 2 times a equals plus or minus square root of the quantity b squared minus 4 times a times c over 4 times a squared equals plus or minus square root of b squared minus 4 times a times c, all divided by 4 times a
Step 8 x = -negative b over 2 times a plus or minus square root of b squared minus 4 times a times c, all divided by 2 times a
Step 9 x = negative b plus or minus square root of b squared minus 4 times a times c, all divided by 2 times a


Which of the following is the first incorrect step?
Step 4

Step 6

Step 7

Step 8

Answer 18

step 4 and step 6 are correct so it leaves step 7&8 which i'm not sure about.. sorry

Answer 19

No that helps a lot. Thanks

Answer 20

If d = p + 0.5at2, which equation is solved for t?

t = square root of d minus p minus 0.5 over a

t = square root of d plus p minus 0.5 over a

t = square root of d plus p over 0.5 times a

t = square root of d minus p over 0.5 times a