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Lunna [17]
3 years ago
12

Please help someone!! Will mark brainliest answer

Mathematics
1 answer:
storchak [24]3 years ago
6 0

                     Answer:

x=1+√5 or x=1−√5


Step-by-step explanation:

Let's solve your equation step-by-step.

x2−2x−4=0

Step 1: Use quadratic formula with a=1, b=-2, c=-4.

x=

−b±√b2−4ac  

2a  

x=

−(−2)±√(−2)2−4(1)(−4)  

2(1)  

x=

2±√20  

2  

x=1+√5 or x=1−√5

Hope this helps!! :D Happy Tuesday!

 

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Answer:

t=3.5 seconds

Step-by-step explanation:

Given

h(t) = −16t^2 + 111t + 0

h'(t)= -32t + 111

Maximum height occurs when h(t) = 0 and the ball begins to fall

h(t)= -32t + 111=0

-32t + 111=0

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Divide both sides by -32

t=3.46872

Approximately, t=3.5 seconds

Recall,

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h(t)= -32t + 111=0

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= 0.00096 ft

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3 years ago
The boston celtics have won 16 nba championships over approximately 50 years. Thus it may seem reasonable to assume that in a gi
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