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Pani-rosa [81]
3 years ago
10

Tossing a coin and spinning a spinner with five equal sections, 1-5

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
5 0

Answer:

Its gonna be a 50/50 on the coin and 20/100 chance for the spinner

Sonja [21]3 years ago
4 0

Answer:

5 outcomes for the spinner and a 50/50 chance for the coin

Step-by-step explanation:

for the spinner, there are five numbers, 1,2,3,4, and 5. so, there is a 1/5 chance or you could also say there is a 20/100 chance.   For the coin, there are two sides and 100 divided by 2 is 50 therefore, there is a 50/50 chance

Hope this helps!!

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A dog jumps straight up. Y=-16t^2+20t models the motion of the dog, where "t" is the time in seconds and "y" is the height of th
alina1380 [7]

Answer:

Step-by-step explanation:

The motion of the dolphin is quadratic

i.e y=-16t²+20t

To get the maximum height the dolphin will reach

We need to find the point of inflexion. i.e dy/dt=0

dy/dt=-32t+20

Then set dy/dt=0

0=-32t+20

Then, -32t=-20

t=0.625

Let find d²y/dt²

d²y/dt²=-32. Since this is negative then the point t=0.625 is the maximum point the dolphin can reach

Then substitute t=0.625 into y

y=-16t²+20t

y=-16(0.625)²+20(0.625)

y=6.25ft

Then the maximum height the dolphin can reach is 6.25ft

Using discriminant

Formular method

y=-16t²+20t

So the dog height y<7

y=-16t²+20t <7

-16t²+20t-7<0

a=-16, b= 20. c=-7

t=(-b±√b²-4ac)/2a

Using the a, b and c direct for the discriminant

D=b²-4ac

D=20²-4×-16×-7

D=-48

Which is a complex number

Then the dolphin can reach the height

Then we need to model the D to be greater than 0

Therefore,

D>0

b²-4ac>0

We cannot do anything to a and b it is already given

a=-16, b=20

(20)²-4(-16c)>0

400+64c>0

64c>-400

Then

c>-6.25

Divide both side by - and the inequality sign will change

Therefore -c<6.25

So the dog height y<6.25

y=-16t²+20t <6.25

Therefore the maximum height is 6.25.

If it is greater than that then, we are going to have a complex root movement which is not possible for the dolphin .

5 0
3 years ago
What is the area of circle with a diameter of 22 ft? (use 3.14 for pi; show your work in numbers)
wel

Answer:

69.08

Step-by-step explanation:

π×d

3.14×22=69.08

4 0
2 years ago
Joan has a square flower bed with a side length of 5 meters filled with tulips. there are a total of 375 tulips in the bed. find
erma4kov [3.2K]

Answer:

the answer is 15

Step-by-step explanation:

density= total population/surface area

density= 375/5^2

density=375/25=15

8 0
2 years ago
Find the area of this parallelogram. Be sure to include the correct unit in your answer.
quester [9]

Answer:

90yd

Step-by-step explanation:

to find the area you have to do base times height so it is 6x15=90

6 0
2 years ago
Read 2 more answers
Tim works in a sports shop. He purchased wholesale golf shirts for $55 each. For how much did he sell the shirts, if he made 163
marta [7]
Profit for each shirt $89.65
6 0
2 years ago
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