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Dimas [21]
3 years ago
15

Helppppppppppppppppp

Mathematics
1 answer:
Anna [14]3 years ago
8 0
If the slope is given then all is left is y-intercept which is equal to -3 which is also given in the question from the point (-4,-3), then your equation would be complete if you have these two so I think the answer is y=3/4x-3 and I’m really sorry if my answer is wrong but i tried my best and good luck!!
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PLEASE PLEASE HELP AND I NEED YOU TO DO IT FAST BECAUSE I HAVE TO GO SOON
Greeley [361]

The height is modelled by the equation:

h(t)=-0.2t^2+2t

Therefore

\begin{gathered} \text{ } \\ \frac{\text{ dh}}{\text{  dt}}=-0.4t+2 \end{gathered}

At the maximum height dh/dt = 0:

Hence,

\begin{gathered} -0.4t+2=0 \\ -0.4t=-2 \\ \text{ Dividing both sides by -0.4} \end{gathered}\begin{gathered} \frac{-0.4t}{-0.4}=\frac{-2}{-0.4} \\ t=5 \end{gathered}

Hence, the ball gets to the maximum height after 5s.

The maximum height is given by h(5):

h(5)=-0.2(5)^2+2(5)=5

Therefore, the maximum height is 5 ft.

When the ball reaches the ground h(t) = 0:

\begin{gathered} -0.2t^2+2t=0 \\ \text{ Dividing both sides by -0.2, we have:} \\ t^2-10t=0 \\ Factorising\text{ the left hand side, we have} \\ t(t-10)=0 \\ \text{ Therefore,} \\ t=0,\text{ t=10} \end{gathered}

The ball reaches the ground in 10s

.

8 0
1 year ago
A rally car race course covers 515.97 miles. The winning car completed the course in 6.5 hours. What was the average speed of th
Orlov [11]

Answer:

79.38 mile per hour

$6.76

Step-by-step explanation:

It was easy, just divide and multiply

8 0
4 years ago
Read 2 more answers
Given triangle ABC is similar to triangle DEF, angle A measures 30 degrees, and angle F measures 50 degrees, what is the measure
Alona [7]

Answer:

100 degrees

Step-by-step explanation:

Since triangle ABC is similar to triangle DEF, their angles are basically the same.

All angles of a triangle have to add up to 180.

We are already given two angles: 30 and 50

Add them together: 30 + 50 = 80

Now we subtract the number from 180

180 - 80 = 100

The remaining angle has to be 100 degrees

6 0
2 years ago
At the Rubber Duckie booth at the County Fair, contestants randomly pick two rubber ducks, one from each of two separate pools.
Arisa [49]
1. There are 10 ducks in total, 5 in each pool.

2. For each pool, the probability of picking a certain numbered duck—for instance, #3—is 20%.

3. Because the pools are separate with, picking one duck from one pool does not affect the chance of picking a certain duck from the other pool.

4. Therefore, the probability that a contestant wins the game is 20%.

Good luck!
5 0
3 years ago
–4(5x)<br> simplify .......
Monica [59]

Answer:

-20x.....

Step-by-step explanation:

–4(5x)

-20x

5 0
3 years ago
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