1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
const2013 [10]
3 years ago
5

A hailstone falls from a cloud at a height of 1,600 ft. If the equation for height as a function of time is h(t) = -16t2 + initi

al height where t is time in seconds and h(t) is height in feet, how many seconds will it take for the hailstone to hit the ground? [?] seconds ​
Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

10 seconds

Step-by-step explanation:

The function is

h(t)=-16t^2+\text{Initial height}

Initial height = 1600 ft

t = Time taken

0=-16t^2+1600

\Rightarrow -16t^2=-1600

\Rightarrow t^2=\dfrac{1600}{16}

\Rightarrow t^2=100\\\Rightarrow t=\pm 10

So, time taken by the hailstone to reach the ground is 10\ \text{seconds}.

You might be interested in
1) Find AC using either the distance formula or the Pythagorean Theorem.
kap26 [50]

Answer:

1.  C) 2/5 or 4.47   if 2/5 means 2 sqrt(5)

2. sqrt(68)

Step-by-step explanation:

1.  using the pythagorean theorem

a^2 + b^2 = c^2

where a = distance AB = 4   b = BC = 2   and c = AC = ?

4^2 + 2^2 = c^2

16 + 4 = c^2

20 = c^2

take the square root of each side

sqrt(20) = c

sqrt(4) * sqrt(5) = c

2sqrt(5) = c


2.  using the pythagorean theorem

a^2 + b^2 = c^2

where a = distance AC = 8   b = BC = 2   and c = AB = ?

8^2 + 2^2 = c^2

64 + 4 = c^2

68 = c^2

take the square root of each side

sqrt(68) = c

sqrt(4) * sqrt(17) = c

2sqrt(17) = c

did you forget to put the square root of B

5 0
4 years ago
Read 2 more answers
2 triangles are shown. The second triangle is rotated 90 degrees to the right. A point is between both triangles.
Semmy [17]

Answer:

Its center of rotation

Step-by-step explanation:

got it on edge.

4 0
3 years ago
Read 2 more answers
Which career professional would work at a publishing company?
Vanyuwa [196]

Answer:

D

Step-by-step explanation:

They work by preparing the printing process.

Hope this helps!

5 0
3 years ago
Read 2 more answers
Can someone help me with this problem? It’s Special Right Triangles: Decimal Answer. Round to the nearest tenth. Thank you ! 10
Triss [41]

Answer:

h = 1.4

c = 2.8

Step-by-step explanation:

For each problem, remember the special triangle side ratios then use a proportion. To solve, isolate the variable.

For the triangle with the variable h:

Since two of the angles are 45, this is an isosceles triangle. All isosceles triangles have two equal sides that are not the hypotenuse.

In a right isosceles triangle, the ratio for regular side to hypotenuse is 1 to √2.

\frac{1}{\sqrt2} =\frac{h}{2} \\h = 2\frac{1}{\sqrt2} \\h = \frac{2}{\sqrt2} \\h = \frac{2\sqrt2}{2} \\h = \sqrt{2}

h = √2

h ≈ 1.4

For the triangle with the variable c:

The is an equilateral triangle cut in half because the angles are 30 and 60.

The side ratio of altitude to hypotenuse is √3 to 2.

\frac{\sqrt{3} }{2} =\frac{c}{4} \\\sqrt{3} = \frac{c}{2}\\2\sqrt3 = c

c = 2√2

c ≈ 2.8

5 0
3 years ago
Scarlett is throwing a end of the year party for 2013
galben [10]

Answer:

7.5 pounds.

Step-by-step explanation:

the answer is 7.5 ponds because if each slider has 2 oz. then we can find the total number of oz. needed by multiplying by 60. This gets 120 oz that Scarlett needs in total. Since there are 16oz in a pound we divide 120 by 16 to find the number of pounds needed.

6 0
3 years ago
Other questions:
  • A fruit vendor sells 60 pieces of fruit that are either apples x or oranges y there are 1.5 times as many apples x as oranges y
    12·1 answer
  • My four kids cut a pizza evenly . only one kid ate her slice. how much pizza left
    5·2 answers
  • In a basketball game, the bulldogs make a total of 21 shots. Some of the shots are 2-pt shots while others are 3-pt shots. The b
    14·1 answer
  • Wyatt is training for a race. He will run 3 4 of a mile a day for 8 days. How far will Wyatt run altogether?
    12·2 answers
  • Which one best matches the graph?<br> A)y=x+6<br> B)y=-x+6<br> C)y=6x+6<br> D)y=-6x-6
    15·1 answer
  • The graph of which function has an axis of symmetry at x = 3?
    15·2 answers
  • Pls help and remember to include the paranthesis
    7·1 answer
  • BIG IDEAS MATH <br> help me out please hurry
    8·1 answer
  • One number is 4 more than 2 times another. Their product is 16. Find the numbers.<br>​
    15·1 answer
  • John can ride his bicycle at a rate of 14 miles per hour. Convert this rate to feet per second_
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!