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siniylev [52]
3 years ago
15

Graph the equation h=-16t^2+80. click on the graph until the correct solution appears

Mathematics
2 answers:
inna [77]3 years ago
8 0

Answer:

The graph of the equation h=-16t^2+80 is shown in the figure attached.

The y-intercept is obtained replacing t = 0 in the equation, as follows

h=-16(0)^2+80 = 80

The x-intercepts are obtained replacing h = 0 in the equation, as follows

0=-16t^2+80

16t^2 = 80

t^2 = 80/16

t = √5

t ≈ -2.236 or  t ≈ 2.236

With this 3 points, (0, 80) (-2.236, 0) (2.236, 0)  the curve of a quadratic equation is defined.

Andru [333]3 years ago
7 0
The graph of f(x)=-16 t^{2}+80 is shown in the graph below.

The graph is of ∩-shape when the constant a of the quadratic equation a x^{2} +bx+c is negative

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Would really appreciate if u could help me with all letters but even a few are great! Thanks (the graph is hard to explain so i
defon
Part A

The equation is b = 36*a or simply b = 36a

We take the size of the farm 'a' and multiply it by 36 to get the number of bushels of corn 'b'.

-----------------------------------

Part B

The 36 means there are 36 times more bushels of corn compared to the size of the farm in acres

For example, if the size is 2 acres then 
b = 36*a
b = 36*2
b = 72
yielding 72 bushels of corn

-----------------------------------

Part C

Along the first row you should have: 25 and 30 in the missing blanks (over 900 and 1080 respectively)

You find this by dividing the value of b over 36
eg: b/36 = 900/36 = 25

-------

Then along the bottom row you should have the following for the blanks: 0, 360, 1800

These values are found by multiplying the 'a' value by 36
eg: if a = 10 then b = 36*a = 36*10 = 360

-----------------------------------

Part D

Plot any two points you want from the table back in part C
So plot say (0,0) and (10,360). Then draw a straight line through those two points.

-----------------------------------

Part E

The point (30,1080) means a = 30 and b = 1080
So if the farm is 30 acres, then it can produce 1080 bushels of corn

Notice how
b = 36*a
b = 36*30 <<-- replace 'a' with 30
b = 180
And how this matches up with the fourth column of the table in part C. So you can use this part to get a hint of how to fill out the table (or at least know what one column looks like)


8 0
3 years ago
Show that the sum of the reciprocals of three different positive integers is greater than 6 times the reciprocal of their produc
Montano1993 [528]
If a,b,c are the 3 positive integers
1/a +1/b +1/c > 6/abc
(bc+ac+ab)/abc >6/abc so
(bc+ac+ab)>6
The lowest positive integers that are different are 1,2,3 so the lowest value that (bc+ac+ab) could have is 1•2+2•3+1•3=2+6+3= 11 therefore
1/a +1/b +1/c > 6/abc is true
8 0
3 years ago
PLEASE HELPP ILL MARK BRAINLIEST<br> 50 POINTS!! PLEASE
Nutka1998 [239]

Answer:

Step-by-step explanation:

12) Decrease in miles = 22,250 - 14,500 = 7750 miles

Percent \ decrease = \dfrac{7750}{22250}*100

                             = 34.83%

13) Decrease in speed = 40 - 25 = 15 mph

Percent \ decrease = \dfrac{15}{40}*100

                            = 37.5%

6 0
3 years ago
Please help on this ill give braneliest
horsena [70]

Answer:

-2.5

Step-by-step explanation:

25/-10 = -2.5

20/-8 = 2.5

10/-4 = 2.5

-5/2 = 2.5

so the answer is -2.5

Can I pls have brainliest

8 0
2 years ago
I'm completely loss I need help on the entire process to solve this problem
denis23 [38]
I cannot see the picture 
5 0
3 years ago
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