Is B the answer??? PLEASE HELP

April shoots an arrow upward at a speed of 80 feet per second from a platform 25 feet high. The pathway of the

zaharov [31]

Answer:

The maximum height of the arrow is 125 feet.

Step-by-step explanation:

The pathway of the arrow can be represented by the equation,

$h = -16t^2 +80t + 25$ .....(1)

Where h is height in in feet and t is time in seconds.

It is required to find the maximum height of the arrow. For maximum height, $\dfrac{dh}{dt}=0$ .

So,

$\dfrac{d(-16t^2 +80t + 25)}{dt}=0\\\\-32t+80=0\\\\t=\dfrac{80}{32}\\\\t=2.5\ s$

Put t = 2.5 s in equation (1). So,

$h = -16(2.5)^2 +80(2.5) + 25\\\\h=125\ \text{feet}$

So, the maximum height of the arrow is 125 feet.

6 0

2 years ago

Please help. I know it’s not the hardest, but I think I did something wrong when I solved it. Please include your work. Tysm! Pl

Alex73 [517]

1 Multiply both sides by

n

−

3.2

n−3.2.

n

+

0.3

=

9

2

(

n

−

3.2

)

n+0.3=

2

9

(n−3.2)

2 Simplify

9

2

(

n

−

3.2

)

2

9

(n−3.2) to

9

(

n

−

3.2

)

2

9(n−3.2)

.

n

+

0.3

=

9

(

n

−

3.2

)

2

n+0.3=

2

9(n−3.2)

3 Multiply both sides by

2

2.

2

n

+

0.6

=

9

(

n

−

3.2

)

2n+0.6=9(n−3.2)

4 Expand.

2

n

+

0.6

=

9

n

−

28.8

2n+0.6=9n−28.8

5 Subtract

2

n

2n from both sides.

0.6

=

9

n

−

28.8

−

2

n

0.6=9n−28.8−2n

6 Simplify

9

n

−

28.8

−

2

n

9n−28.8−2n to

7

n

−

28.8

7n−28.8.

0.6

=

7

n

−

28.8

0.6=7n−28.8

7 Add

28.8

28.8 to both sides.

0.6

+

28.8

=

7

n

0.6+28.8=7n

8 Simplify

0.6

+

28.8

0.6+28.8 to

29.4

29.4.

29.4

=

7

n

29.4=7n

9 Divide both sides by

7

7.

29.4

7

=

n

7

29.4

=n

10 Simplify

29.4

7

29.4

to

4.2

4.2.

4.2

=

n

4.2=n

11 Switch sides.

n

=

4.2

n=4.2

4 0

2 years ago

Read 2 more answers

If the sin 30° = , then the cos 60° = _____. 0, because the angles are complementary , because the angles are complementary , be

g100num [7]

Answer:

1 is the answer

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help

Maurinko [17]

Answer:

704 square yards

Step-by-step explanation:

10 * 19 = 190

190 * 2 = 380

12 * 19 = 228

12 / 2 = 6

6 * 8 = 48

48 * 2 = 96

96 + 228 + 380 = 704

Hope this helped! Have a nice day, and plz mark as brainliest if correct!!!

-Lil G

7 0

3 years ago

Read 2 more answers

Kyle's father is 67 ft. tall. Kyle is 5 feet tall. How many times taller is Kyle's father than him?

MrRissso [65]

Answer:

13.5

Step-by-step explanation:

to find the answer you divide 67 and 5 and get 13.5. to check your answer, you can do 13.5 x 5 and get 67 because 67 is 13.5 times 5. why is kyles dad so tall though..

5 0

2 years ago