Ask question

Ask question

All categories

3 years ago

7

The quadratic function h(t)= -16.t^2+150 models a ball’s height, in feet, over time, in seconds, after it is dropped from a 15 s

tory building. From what height in feet is the ball dropped

1 answer:

irga5000 [103]3 years ago

8 0

At time 0 its height is -16(0)^2 + 150 = 150

Height from whick its dropped is 150 ft.

You might be interested in

Part c Katie started with $40. How much money did she have left after purchasing the supplies? Enter your answer in the box prov

Hitman42 [59]

Answer:

gotta give me more details here Katie

7 0

3 years ago

The distance traveled by a toy car can be modeled by D(t) = t3 − 3t2 + t − 3, where t > 3 represents time in seconds. If the

Bogdan [553]

Answer:

$t^2+1$

Step-by-step explanation:

We are given that

Distance traveled by a toy car

$D(t)=t^3-3t^2+t-3$

Where t>3

Time taken by car =t-3 seconds

We have to find the expression which represents the speed of the toy car.

We know that

$Speed=\frac{Distance}{time}$

Using the formula

$Speed=\frac{(t^3-3t^2+t-3)}{t-3}$

$Speed=\frac{t^2(t-3)+(t-3)}{t-3}$

$Speed=\frac{(t-3)(t^2+1)}{t-3}$

$Speed=t^2+1$

Hence, the expression which represents the speed of the toy car

$t^2+1$

5 0

3 years ago

Heather had to collect insects for her biology project. She was able to collect 225 total insects. She collected 8 times as many

GREYUIT [131]

200 flying insects she catch for her project .

<u>Step-by-step explanation:</u>

We have , Heather had to collect insects for her biology project. She was able to collect 225 total insects. She collected 8 times as many insects that could fly as insects that couldn't fly. That means insects ratio of non-fly to fly is 1:8 .

There are a total of 225 insects , and for every one non fly insect there are 8 fly insects , Let x be the number of insects that can't fly so:

$x + 8x = 225$

⇒ $x + 8x = 225$

⇒ $9x = 225$

⇒ $\frac{9}{9}x = \frac{225}{9}$

⇒ $x = \frac{225}{9}$

⇒ $x = 25$

So , Number of fly insects = 8x = 8(25) = 200 . ∴ 200 flying insects she catch for her project .

5 0

3 years ago

The height, in feet, after x seconds of an object launched straight up can be found by the function h(x)=−16x2+v0x+h0, where v0

jok3333 [9.3K]

If you knew calculus this problem would take like 2 seconds, but since we are working with maybe Algebra 2, you have to use the equation as it is and find where h(x) is 0, because that is the height of something when it hits the ground. Meaning, you have to factor this and solve it for x. Here's your equation:
h(x) = -16x^2 + 60x +16. Use the quadratic formula to find that the values for x are -.25 and 4 seconds. Of course time cannot ever carry a negative value, so the answer is 4 seconds. It takes the ball 4 seconds to hit the ground.

7 0

3 years ago

PLEASE HELP ME QUICK ASAP

DanielleElmas [232]

Answer: 107
Steps: add 12 + 106
= 118
subtract 332 - 118
= 214
divide 214/2
= 107

6 0

3 years ago