MATHEMATICS HIGH SCHOOL

The function y=-16x^2+96x shows the height y of a football kicked off the ground over a period of time x.the graph of the function is shown below.what is a reasonable domain for the time the ball is in the air

Answers

Answer 1
Answer: the domain is 0 < x < or equal to 6 seconds
Answer 2
Answer:

Answer:

Domain:

(−∞,∞),{x|x∈R}

Step-by-step explanation:

hope i helped :) !!

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Which expression is equal to (x+4)(−3x2−4x+2)? −3x3−4x2+2x+8 −3x2−4x+8 −3x3−16x2−14x+8 −3x2−3x+6

Answers

Answer:

−3x3−16x2−14x+8

Step-by-step explanation:

first times the first x in parentheses by everything in the second

(x)(-3x^2) and (x)(-4x) and (x)(2)

-3x^3-4x^2+2x

Then times the 4 by the other variables in the parentheses

(4)(-3x^2) and (4)(-4x) and (4)(2)

-12x^2-16x+8

now the whole equation:  

-3x^3-4x^2+2x -12x^2-16x+8

now you must simplify or add like terms

-3x^3-16x^2-14x+8 is your answer, which is the first one.

Answer:

I believe this is what you're looking for

Step-by-step explanation:

In general, the median of a data set is less resistant to outliers than the mean. A. True B. False

Answers

A. true, the median of a data set is less resistant to outliers than the mean

Answer:

FALSE  is the correct answer

Step-by-step explanation:

What is the period of the sinusoid given by y=-4 sin(2 pi/3 x)?

Answers

The period of a sinusoidal curve can be determined through the formula : P = 2π / B where B is equal to 2π / 3. In this case, P = 2π / 2π / 3 equal to 3. The amplitude or the height of the curve is equal to -4. The curve passes through the origin, (0,0). Answer is 3

Answer:

3

Step-by-step explanation:

i just took the test   ;p

The running time for movie A is 33 mins more than twice the running time for movie B. If the running time for movie A is subtracted from triple the running time for movie B, the result is 57 mins. find the running time for each movie..Movie A-
Movie B-

Answers

X is the running time for movie A and y the running time for movie B
X = 2y + 33
3y - × = 57
x- 2y = 33
-× + 3y = 57  => y = 90
=> x 33 + 180 = 213
use what they tell you to create the equations 

 a=33+2b  & 57=3b-a

for this to work we need to substitute a variable to get rid of it. 
look at 
          57=3b-a (lets switch it around s that the equation reads "a=")
          57+a=3b
          a=3b-57 (this is our new equations)

so now we know that 
a=33+2b & a=3b-57
so we can write 33+2b=3b-57. we have now "gotten rid" of "a"

SOLVE FOR B 

33+2b=3b-57  (get variable alone)
33= 3b-2b-57  (subtract and add accordingly)
33= b-57
33+57=b
90=b     (this means that movie b is 90 long)

SOLVE FOR A

you can plug "b" into any of the original equations.

a=33+2b 
a=33+2(90)
a=33+180
a=213

CHECK

plug "a" into any of the original equations to find "b" if b=90 then you know you've done it right 

213=33+2b
213-33=2b
180=2b
180/2=b
90=b

hope this helps :)

A dartboard has a diameter of 18 inches.What are its radius and circumference?

Answers

Diameter of the dartboard as given in the question = 18 inches
Then
Radius of the dartboard will be = 18/2 inches
                                                  = 9 inches
We already know that
Circumference of a circle = 2πr
We also know that the value of π = 3.14159
Then
Circumference of the dartboard = 2 * 3.14159 * 9 inches
                                                    = 56.548 inches
                                                    = 56.55 inches
So the radius of the dartboard is 9 inches and the circumference of the dartboard is 56.55 inches. I hope the procedure is absolutely clear to you.

Write a whole number and a fraction greater than 1 to name the part filled.Think : 1 container = 12 boxes with 4 shaded circles in each

Answers

I'll answer the second question it is 2x4 which = 8 boxes
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