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
igor_vitrenko [27]
2 years ago
13

A ball is kicked 4 feet above the ground with an initial vertical velocity of 51 feet per second. The function h(t)=−16t²+51t+4

represents the height h (in feet) of the ball after t seconds. Using a graph, after how many seconds is the ball 28 feet above the ground? Round your answers to the nearest tenth.
Mathematics
2 answers:
olga55 [171]2 years ago
5 0

Answer:

0.57 seconds (see graph)

Step-by-step explanation:

h(t) = -16t² + 51t + 4

h(t) = 28

28 = -16t² + 51t + 4

0 = -16t² + 51t - 24

t1 = 2.613573055

t2 = 0.5739269455 (pick this answer)

The ball will be 28 feet above the ground after 0.57 seconds

uysha [10]2 years ago
4 0

Answer:

0.6 seconds to 2.6 seconds

Step-by-step explanation:

From the graph the ball reaches 28 feet after 0.574 seconds

and doesn't fall below that until 2.614 seconds

0.574 rounded is 0.6 seconds

2.614 rounded is 2.6 seconds

You might be interested in
How do you do this?<br> it’s similar figures with line segments
Taya2010 [7]

Answer:

idk tying to get more points

Step-by-step explanation:

idk idk if

7 0
3 years ago
HELPPPP PLZ<br> Witch statement is true about the value of |6|?
exis [7]

Answer:

The third choice is the correct one.

Step-by-step explanation:

The absolute value of six means that it's the distance from 0 to six, and that distance will be positive regardless of the number being negative or not.

8 0
3 years ago
Read 2 more answers
A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distri
Softa [21]

Answer:

The data item is X = 580

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 400 and a standard deviation of 60.

This means that \mu = 400, \sigma = 60

z=3

We have to find X when Z = 3. So

Z = \frac{X - \mu}{\sigma}

3 = \frac{X - 400}{60}

X - 400 = 3*60

X = 580

The data item is X = 580

6 0
3 years ago
What is the range and domain
mr_godi [17]

Answer:

domain is 0 to infinity and range is 5 to infinity

Step-by-step explanation:

x is domain and y is range

3 0
3 years ago
Read 2 more answers
What does the expression n+3 represent?
Sati [7]
Do you know what n equals so i can solve it?<span />
5 0
3 years ago
Other questions:
  • QUICK need help with this
    6·1 answer
  • Please help. If CJ=8x+5 CT=55, and JT=4x+2 Find JT
    14·1 answer
  • suppose there is a 1.1 degree F drop in temperature every thousand feet that an airplane climbs into the sky. if the temp on the
    11·2 answers
  • Pls help help with this problem it's big hard thx
    13·1 answer
  • Find the value of each missing variable. PLS!!!
    9·2 answers
  • Find the GCF of the terms of the polynomial. ANSWER WITH AN EXPLANATION please im bad at this
    5·1 answer
  • Consider the points below. P(2, 0, 2), Q(−2, 1, 4), R(7, 2, 6)
    12·1 answer
  • A rectangle has and area of 55 Square inches and a length of 5 inches what is the width
    11·1 answer
  • 720 inches per second to miles per minute
    5·1 answer
  • Find the factors of f(x) given that x = −3 is a zero.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!