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lions [1.4K]
3 years ago
13

A ball is thrown straight up into the air. The height of the ball t seconds after it is thrown is modeled by the equation h(t) =

48t – 16t2. After how many seconds will the ball hit the ground?
A. 1

B. 1.5

C. 3

D. 3.5
Mathematics
1 answer:
Nookie1986 [14]3 years ago
6 0

Answer:

b

Step-by-step explanation:

gravity

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Part A
romanna [79]

The amount earned hourly by Ryan and the number of work hours required to cover his vacation cost are $29.75 and 63 hours respectively.

<u>Given the Parameters</u> :

  • Total amount earned = $238

  • Number of hours worked = 8 hours

Hourly earning = Total earning ÷ number of hours worked

Hourly earning = $238 ÷ 8 = $29.75

B.)

Vacation cost = $1850

Hourly earning = $29.75

<u>Number of work hours required</u> :

  • Vacation cost ÷ Hourly earning

  • $1850 ÷ $29.75 = 62.18

Therefore, Ryan will need to work for 63 hours to cover his vacation expenses.

Learn more : brainly.com/question/18796573

4 0
2 years ago
Problem Solving each problem by solving a simpler problem. solve There are two identical figures with all sides of equal length.
PolarNik [594]
Pentagon and each side is 2 units
3 0
3 years ago
Find the number b such that the line y = b divides the region bounded by the curves y = 25x2 and y = 1 into two regions with equ
Dennis_Churaev [7]

Answer:

y=1/∛4 divides the area in half

Step-by-step explanation:

since the minimum value of x² is 0 (for x=0 ) and for y=1

1 = 25*x² → x= ±√(1/25) = ±1/5

then the total area between y=1  and y = 25*x²  is bounded to  x=±1/5 and y=0 . Since there is a direct relationship between x and y , we can find the value of x=a that divides the region in 2 of the same area. thus

Area below x=C = Area above x=C

Area below x=C = Total area -  Area below x=C

2*Area below x=C = Total area

Area below x=C = Total area /2

∫ 25*x² dx from x=c to x=-c =  1/2 ∫ 25*x² dx from x=1/5  to x=-1/5

25*[c³/3 - (-c)³/3] = 25/2 * [(1/5)³/3 - (-1/5)³/3]

2*c³/3 = (1/5)³/3

c = 1/(5*∛2)

thus

y=25* x²  = 25*[1/(5*∛2)]² = 1/∛4

thus the line y=1/∛4 divides the area in half

4 0
3 years ago
An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed. Actual sales
Ugo [173]
The residue in each case is the difference between actual and predicted sales. Thus:
55 - 40 = 15
150 - 150 = 0
325 - 300 = 25
510 - 500 = 10
800 - 780 = 20
1000 - 990 = 10
These add up to be:
15 + 25+ 10 +20 +10
= 80
8 0
3 years ago
Read 2 more answers
The first three terms of a sequence are given. Round to the nearest thousandth (if
andrey2020 [161]

The 34th term of the sequence 158, 155, 152 ...... is 59

The sequence is as follows:

158, 155, 152 ......

let

a = first term = 158

d = common difference = 155 - 158 = -3

Using Arithmetic progression formula, let's find the 34th term as follows:

aₙ = a + (n - 1)d

a₃₄ = 158 + (34 - 1)-3

a₃₄ = 158 + (33)(-3)

a₃₄ = 158 - 99

a₃₄ = 59

Therefore, the 34th term of the sequence is 59.

learn more about sequence here: brainly.com/question/23251262?referrer=searchResults

3 0
2 years ago
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