3 years ago

If k is positive how does the parabola move? if negative?

1 answer:

3 0

Answer:

If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left. The vertex is at (h, k).

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IfA=(-2,-4) and B=(-8,4), what is the length of AB?

lisabon 2012 [21]

Answer:

<h2>10 units </h2>

solution,

A(-2,-4)--->(X1,y1)

B(-8,4)----->(x2,y2)

now,

$ab = \sqrt{(x2 - x1) ^{2} + {(y2 - y1)}^{2} } \\ \: \: \: \: = \sqrt{ (- 8 - ( - 2)) ^{2} + (4 - ( - 4)) ^{2} } \\ \: \: \: = \sqrt{( - 8 + 2) ^{2} + {(4 + 4)}^{2} } \\ \: \: \: = \sqrt{( - 6) ^{2} + {(8)}^{2} } \\ \: \: = \sqrt{36 + 64} \\ \: \: \: = \sqrt{100} \\ \: \: \: = \sqrt{ {(10)}^{2} } \\ \: \: \: \: = 10 \: units$

Hope this helps..

Good luck on your assignment

3 0

3 years ago

Which function is equivalent to y=3(x+2)^2+7

Ilia_Sergeevich [38]

3x+45 most u can simplify it

8 0

3 years ago

On a test, George was asked to find the square root of 0.45.

Natali5045456 [20]

Answer:

The square route of 0.45 is 0.7.

Step-by-step explanation:

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3 years ago

What is the expectation for a binomial distribution with p = 0.5 and n = 8?

Natasha2012 [34]

Answer: 4

Step-by-step explanation:

Given the following :

P = probability of success = 0.5

n = number of trials = 8

The expected value of a binomial distribution with probability of success P and number of trials n is defined by:

E(n, p) = n * p

Therefore, expected value when P = 0.5 and n = 8

E(8, 0.5) = 8 × 0.5

= 4

The expected value of the binomial distribution is 4

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3 years ago

I need with absolute value.

Amanda [17]

What do u need the absolute value on?

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3 years ago

Read 2 more answers