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Tasya [4]
3 years ago
9

If the vertex of a parabola is (4,-6), what is the axis of symmetry?

Mathematics
1 answer:
Serhud [2]3 years ago
4 0

Answer:

x = 4

Step-by-step explanation:

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Can u help me please
kow [346]

Answer:

where's the number?

Step-by-step explanation:

4 0
3 years ago
You take a quiz with 6 multiple choice questions. After you studied your estimated that you would have about an 80 % chance of g
Arada [10]

Answer:

1.15%

Step-by-step explanation:

To get the probability of m  independent events you multiply the individual probability of each event. In this case we have m independent events, each one with the same probability, therefore:

p^{m}

0.8^{20} = 1.15\%

This is a particlar scenario of binomial distribution problem. So the binomial distribution questions are about the number of success of m independent events, where every individual event has the same p probability. In the question we have 20 events and each event has a probability of 80%. The binomial distribution formula is:

\binom{n}{k} * p^{k} * (1-p)^{n-k}

n is the number of events

k is the number of success

p is the probability of each individual event

\binom{n}{k} is the binomial coefficient

the binomial coefficient allows to find the subsets of k elements in a set of n elements.  In this case there is only one subset possible since the only way to get 20 of 20 correct questions is to getting right all questions (for getting 19 of 20 questions there are many ways, for example getting the first question wrong and all the other questions right, or getting second questions wrong and all the other questions right, etc).

\binom{n}{k} = \frac{n!}{k!(n-k)!}

therefore, for this questions we have:

\frac{20!}{20!(20-20)!} * 0.8^{20} * (1-0.8)^{0} = 1.15\%

4 0
3 years ago
Answer quick plsssssssssss thx
pentagon [3]

Answer:

I think Substitution

Step-by-step explanation:

Because x is already solved for in the second equation.

6 0
2 years ago
Alina drew a model of a square pyramid. The dimensions of the model are shown in the diagram. pls don't answer with links
Romashka [77]

Answer:

C

Step-by-step explanation:

Volume of a pyramid = 1/3 base area * height

                                   = 1/3 (8 * 10)(12)

6 0
2 years ago
2. Gerald wants to buy a gel pen that costs
dolphi86 [110]

Answer:

He needs 34 cents more

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3 years ago
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