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
Shtirlitz [24]
3 years ago
11

A baseball is thrown from the top of a building and falls to the ground below. The height of the baseball above the ground is ap

proximated by the relation h = -5t2 + 10t + 15, where h is the height above the ground in metres and t is the elapsed time in seconds. Determine the maximum height that is reached by the ball.
Mathematics
1 answer:
lidiya [134]3 years ago
5 0
Kstsskts stsxaeUzt. awyararka euaya
You might be interested in
210,704 in equivalent Form
Verizon [17]

Answer:

<h2><em>210= 2×3×5×7  (4 distinct prime factors)</em></h2><h2><em>2×2x2x2x2x2x11 or 2^6×11  (7 prime factors, 2 distinct)</em></h2><h2><em>please mark me as braini</em><em>est </em></h2>

4 0
3 years ago
How do you solve this problem?
jekas [21]
Very nice problem. You should look up the history of this question. It has a very long one having to do with mirrors made between 50 BC and 50 AD.

Step One
Find AB, BC, AC
Before beginning this problem, I'm going to arbitrarily name 
c = AB
a = BC
b = AC It just makes the calculations easier.

AB = radius of the large circle - radius of the medium circle = 20.62 - 8.04 = 12.58
BC = Radii of the two smaller circles added together = 8.04 + 7.35 = 15.39
AC = Radius of the large circle - Radius of the small circle = 20.62 - 7.35 = 13.27

So
a = 15.39
b = 13.27
c = 12.58

Step Two
Find Angle A or <BAC
a^2 = b^2 + c^2 - 2*b*c * Cos(A)
15.39^2 = 12.58^2 + 13.27^2 - 2 * 12.58 * 13.27 * Cos(A)
236.852 = 158.26 + 176.1 -  333.87 * Cos(A)
236.852 = 334.4 - 333.87*Cos(A)
-97.55 = - 333.87 *  Cos(A) 
-97.55 / -333.87 = Cos(A)
0.2922 = cos(A)
A = cos-1(0.2922)
A = 73.01 degrees

Step Three
Just to see if you understand what was done, I'll give you the givens for finding c, and the answer and you can work through the calculations to see if your answer agrees with mine. If it doesn't PM me.
c = 12.58
b = 13.27
a = 15.39

12.58^2 = 13.27^2 + 15.39^2 - 2*13.27*15.39*Cos(C)
C = 51.42

Step Four
Find <B
Every triangle has 180 degrees so
B = 180 - <A - C
B = 180 - 51.42 - 74.01
B = <54.57. 
I have found a moderator who opened the question up so that I can show you why the Cos law is the only way to do this. If the circles are very disproportionate as in this diagram, then no simple assumption can be made. The cos law is all that will work. I would have posted this earlier, but I didn't think anyone would find another method. It's ingenious but not possible for the situation below.

3 0
3 years ago
PLZ HELP ASAP ILL GIVE BRAINLEST
lianna [129]

Answer:

2.25

Step-by-step explanation:

-9/-4= 2.25

3 0
2 years ago
Read 2 more answers
In the diagram, what is mZVSR?
sesenic [268]

Answer:

80 degrees.

180-100=80

hope that helps

Please said thanks

5 0
2 years ago
Negative four times a number plus nine is no more than the number minus twenty one
marysya [2.9K]
N is no more than six
8 0
3 years ago
Read 2 more answers
Other questions:
  • the area of the region bounded by the curve y=e^2x the x axis the y axis and the line x=2 is equal toA) e^4/2 -e B) e^4/2 - 1 C)
    12·1 answer
  • The marked price of a water cooler is $ 4500. The shopkeeper offers an off-season discount of 18% on it. Find its selling price.
    15·1 answer
  • Find the equation of the line.
    12·1 answer
  • A 2 digit square whose digits add up to an even number
    7·1 answer
  • Write an expression that is equivalent to . Then, find the quotient.
    15·1 answer
  • PLEASE HELP I NEED THIS FAST
    9·1 answer
  • Parallelogram P was dilated to form parallelogram p'<br><br> What is the value of x?
    13·1 answer
  • Hikers on a backpacking trip take 2 hours and 10 minutes to hike the first 2.6 miles of an 8-mile hike. At this pace, which amou
    10·1 answer
  • Help please :D ( math 6th grade )
    8·1 answer
  • Can someone help me please?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!