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Whitepunk [10]
3 years ago
11

When Mr. Smith kicks a football, it has a vertical speed of 20 m/s, and its height, h in meters after t seconds can be modeled b

y the equation h=20t−5t^2 .
Part A.
How long is the football in the air before it lands on the ground?
​
seconds

Part B
In how many seconds will the football reach its maximum height?
​
seconds
​
​Part C
​What is the maximum height that the football will reach?
​
meters
Mathematics
1 answer:
adelina 88 [10]3 years ago
6 0

Answer:

look up desmos and do it on there it helps alot

Step-by-step explanation:

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How much would $500 invested at 9% interest compounded annually be
dalvyx [7]

Answer:

$705.79.

Step-by-step explanation:

The formula is

Amount = P(1 + r/100) ^ t  so

Amount = 500 (1 + 9/100)^4

= $705.79.

8 0
3 years ago
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can some one help me with this iv been stuck for about a week and i need some help are these function why or why not? thanks!
FromTheMoon [43]

Answer:

1) f(x) is not a function

2) g(x) is  a function.

Step-by-step explanation:

Function is  defined as a relationship between the independent variable and  the dependent variable

If a variable y is so related to a variable x that whenever a numerical value is assigned to x, there is a rule according to which a unique value of y is determined, then y is said to be a function of the independent variable

The above function can be represented by y = f(x).  f(x) can also been represented g(x) and P(x) functions of the independent variable x,  when the   function is unknown or unspecified.

Two laws to become a function:

a) Every element in X is related to some element in Y.

This relationship is commonly symbolized as y = f(x). In addition to f(x), other abbreviated symbols such as g(x) and P(x) are often used to represent functions of the independent variable x, especially when the nature of the function is unknown or unspecified.

Two rules to become a function:

a)"Each element" means that every element in X is related to some element in Y.

But some elements of Y may not assigned to x

b) A function is assigned to a single value. It will not give back 2 or more elements for the same input.

One-to-many is unaccepted, while many-to-one is accepted

If the relationship does not satisfies those two rules then it is not a function. we can say that the given relationship not a function.

1) Let f(x) be the function

Given x is domain ie, x=\{-2-3\} and y=f(x) ie, y=\{2,3\} is the range of x

By the definition of function,  f(x) does not satisfies the rules  to be a function because f(-2)=2 and f(-2)=3 So it assigns two values.

Therefore  f(x) is not a function

2) Let g(x) be the function

x is domain ie, x=\{-2-1,0,1\} and y=g(x) ie, y=\{2,2.5,3,3.5\} is the range of x

By the definition function,  g(x)  satisfies the rules  to be a function because g(-2)=3 , g(-1)=3.5,g(0)=2 and g(1)=2 So it assigns exactly one value.

Therefore  g(x) is  a function.

3 0
3 years ago
Please help me. Por favorrrrrr
irakobra [83]
The statements that are correct are A and E. A because the y-intercept for y=5x+12 is 12 and the table of values it is 5. E is correct because the rate of change for the table of values is 24 and y=5x+12, it is 5.
4 0
2 years ago
What is the median of the following numbers?<br> 9,8,1, 8,5
Zolol [24]

Answer:

8

Step-by-step explanation:

1, 5, 8, 8, 9

Find the middle number. If there is 2 add them and divide them by 2

But there is 1 middle number 8

3 0
3 years ago
Simplify. (-1/2√2)(-6√18) 18 -18 -36
olga_2 [115]

Hey!

Your answer is solved below/above idk wherever just see in the picture.

8 0
2 years ago
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