Identify the vertex of the parabola. (6,3) (5,0) (4,-1) (3,0)

Mathematics

2 answers:

ivolga24 [154]2 years ago

7 0

The answer would be C. (4,-1)

VMariaS [17]2 years ago

5 0

4,-1 will be your answer.........

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What is the measure of each angle?

Natali5045456 [20]

M of angle 1: 87

Recognize that alt. int. angles are congruent. Find the measure of angle three, which is an alt. int. angle of angle 1. Angle three is a supplementary angle to the angle right next to it, which measures 93. To find m of angle three subtract 180 from 93. M angle 3 = 87, therefore, the measure of angle 1 is 87 as well.

M of angle 2: 49

All vertical angles are congruent

M of angle 3: 87

Look at the solution for the first angle

M of angle 4: 44 

If you look closely, angle 4 is part of a triangle with two known sides. Thus all we have to do is subtract 180 from the sum of the known sides.

49 + 87 = 136

180 - 36 =44

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soldier1979 [14.2K]

If y varies inversely with x, then we know that:

y = k/x

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2 years ago

In a class of 28 students, the teacher selects four people at random to participate in a geography contest. What is the probabil

mixer [17]

Using the hypergeometric distribution, it is found that there is a 0.0452 = 4.52% probability that this group of four students includes at least two of the top three geography students in the class.

The students are chosen without replacement, hence the hypergeometric distribution is used to solve this question.

<h3>What is the hypergeometric distribution formula?</h3>

The formula is:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}$