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3 years ago

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.

−b±√b2−4ac

−(−2)±√(−2)2−4(1)(−4)

2(1)

2±√20

x=1+√5 or x=1−√5

Hope this helps!! :D Happy Tuesday!

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A ball is thrown vertically upward from the ground with an initial velocity of 111 ft/sec. Use the quadratic function h(t) = −16

ddd [48]

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

-32t=-111

Divide both sides by -32

t=3.46872

Approximately, t=3.5 seconds

Recall,

Maximum height occurs when h(t) = 0

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

= -32(3.46872)+111

= -110.99904+111

= 0.00096 ft

4 0

3 years ago

What is the Lcm of 5 and 20

Inga [223]

Answer:

20 is the LCM of 5 and 20.

....

5 0

2 years ago

Read 2 more answers

Which of the following is an example of discrete data?

ahrayia [7]

Answer:

D- the number of times you get heads when you flip a coin 100 times

Step-by-step explanation:

7 0

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

Nutka1998 [239]

We have been given that The boston celtics have won 16 nba championships over approximately 50 years. Therefore, it can be concluded that in any given year the probability of celtics winning the title will be p = 16/50 = 0.32

For Celtics to win eight straight championships in 1959, we will be required to multiply the probability of winning championship in one year to itself 8 times.

Therefore, the required probability is:

$0.32^{8}=0.0001099511627776$