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garik1379 [7]
3 years ago
8

Please help this is a 30 60 90 triangle

Mathematics
2 answers:
natka813 [3]3 years ago
8 0

Answer:

See below

Step-by-step explanation:

x =  \frac{1}{2}  \times  \sqrt{6}  \\  \\ x =  \frac{ \sqrt{6} }{2}  \\  \\ y =  \frac{ \sqrt{3} }{2}  \times  \sqrt{6}  \\  \\ y =  \frac{ \sqrt{3 \times 6} }{2}  \\  \\ y =  \frac{ \sqrt{18} }{2}   \\  \\ y =  \frac{ 3\sqrt{2} }{2}

Elden [556K]3 years ago
3 0

Answer:

x = \frac{\sqrt{6}}{2} and y = \frac{3\sqrt{2}}{2}

Step-by-step explanation:

The ratio of the sides is a:a\sqrt{3}:2a, and you are give the side that is equal to  2a. This means that x = \frac{\sqrt{6}}{2} and y = \frac{\sqrt{6} * \sqrt{3}}{2} = \frac{3\sqrt{2}}{2}

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Suppose the length of telephone calls form a normal distribution with a mean length of 8.0 min and a standard deviation of 2.5 m
ikadub [295]

Answer:

(A) 0.0013

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 8, \sigma = 2.5

The probability that telephone call selected a random will last more than 15.5 min is most nearly

This is 1 subtracted by the pvalue of Z when X = 15.5.

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{15.5 - 8}{2.5}

Z = 3

Z = 3 has a pvalue of 0.9987

1 - 0.9987 = 0.0013

So the correct answer is:

(A) 0.0013

8 0
3 years ago
Which of the following equations represents the line with a slope of negative 8/7 and a y-intercept of negative 3?
kati45 [8]

Solution

The general form of the equation is y = mx + b, where m is the slope and b is the y-intercept.

Given: m = 8/7 and b = -3

Plugin the given values into the formula.

y = 8/7x - 3

The answer is y = 8/7x - 3

Thank you :)

7 0
3 years ago
Which equation represents a parabola that has a minimum value at y=4
Nikolay [14]
43 yeah but it’s equal to x
5 0
3 years ago
Thank you if you solve this for me !!
nlexa [21]
X = 5
x = -7
There you go
5 0
3 years ago
Find the distance between the points (3, -5) and (-6, -5).
Sophie [7]

ANSWER

9

EXPLANATION

We want to find the distance between the points (3, -5) and (-6, -5).

The given points have the same y-coordinates .

This means it is a horizontal line.

We use the absolute value method to find the distance between the two points.

We find the absolute value of the distance between the x-values.

The distance between the two points is

|3--6|=|3+6|=|9|=9

8 0
3 years ago
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