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3 years ago

How do I work this out

Mathematics

1 answer:

vazorg [7]3 years ago

7 0

Check the picture below.

make sure your calculator is in Degree mode.

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The function H(t) = −16t2 + 75t + 25 shows the height H(t), in feet, of a baseball after t seconds. Part A: After how many secon

nlexa [21]

Step-by-step explanation:

Given that,

The function that shows the height of a baseball after t seconds is given by :

$H(t)=-16t^2+75t+25$ ....(1)

Part (A).

When the baseball hits the ground,

H(t) = 0

So,

$-16t^2+75t+25=0\\\\t=5\ s\ and\ t=-0.31\ s$

After 5 seconds the baseball will hit the ground.

Pat (B)

For maximum height, put dH/dt = 0

So,

$\dfrac{d}{dt}(-16t^2+75t+25)=0\\\\-32t+75=0\\\\t=2.34\ s$

Put t = 2.34 s in equation (1).

$H(t)=-16(2.34)^2+75(2.34)+25\\\\H(t)=112.89\ m$

Hence, this is the required solution.

8 0

3 years ago

Answer please it’s due tomorrow I just need the four in the middle I’m really bad at math...

m_a_m_a [10]

Answer:

Number 2: 126

Number 3: 128

Number 4: 75

Number 5: 204

Step-by-step explanation:

7 0

3 years ago

Prediction: It rains 2 out of the last 12 days in March. If this trend continues, how many rainy days would you expect in April?

Vladimir79 [104]

Answer:

I would expect rain 5 days

Step-by-step explanation:

Please kindly see the attached files for explanation.

8 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!

snow_lady [41]

Answer:

A. The area is $78.54m^2$

B. She needs to cover 1661.9 square feet of tiles for the base of the swimming pool

Step-by-step explanation:

Question A:

Let us assume that the leash is pegged to the ground using a stake. as a result, the dog can move around the stake. The path that the motion of the dog would trace is a circle, and the radius of the circle will be the length of the leash.

Since we know this, we can easily find the area of the circle using $\pi r^2$

Area of the circle = $\pi \times 5 \times 5 = 78.54m^2$

Question B

Dulce wants to cover the whole surface area of the floor of the circular swimming pool with tiles.

We already know that the swimming pool is circular, hence, the surface area of the base of the swimming pool will be the same as the area of a circle, with the same radius.

The area of the circle can be calculated using $\pi r^2$

Area of circle = $\pi \times 23 \times 23 = 1661.9ft^2$

8 0

2 years ago

What is the solution to the following equation?<br><br> −3/5(x−5)+4x=2/5x+12

Damm [24]

Answer:

x=3

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers