All categories

3 years ago

I GIVE BRAINLIEST AND EXTRA POINTS Round to nearest 10th find value of X

Mathematics

2 answers:

Rus_ich [418]3 years ago

8 0

Given hyp=17 and α=29°,
X = 8.24176
base = 14.86854

kogti [31]3 years ago

4 0

Answer:

x=134

Step-by-step explanation:

Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X.

29+17=46

180-46=134

You will know the answer is right if everything adds up to 180.

134+17+29=180

You might be interested in

When constructing a polygon how can you be sure

ikadub [295]

Make sure it has eight sides

6 0

3 years ago

Read 2 more answers

Help me with my test pls

JulijaS [17]

Answer:

The answer will be 40!!!!!!!!!!

8 0

3 years ago

The base of a ladder is placed 2.8m away from a tree that is 4.5m tall. The end of the ladder touches the top of the tree. Calcu

ahrayia [7]

Answer:

The length is 7.3m

Step-by-step explanation:

The end of the ladder touches the top of the tree when kept at 2.8m away from the tree.

The Tree is 4.5m tall

The length of the ladder will be: 2.8+4.5 = 7.3

4 0

2 years ago

Read 2 more answers

Mr. Ray is trying to determine the median value of the class averages for his math classes. First, he must list the class averag

Neko [114]

a is the answer

all you need to do is place the numbers from the lowest amount to the highest amount :)

7 0

4 years ago

Read 2 more answers

Consider the probability that no less than 95 out of 152 registered voters will vote in the presidential election. Assume the pr

nikdorinn [45]

Answer:

0.3821 = 38.21% probability that no less than 95 out of 152 registered voters will vote in the presidential election.

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed distributions can be 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.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .

Assume the probability that a given registered voter will vote in the presidential election is 61%.

This means that $p = 0.61$

152 registed voters:

This means that $n = 152$

Mean and Standard deviation:

$\mu = E(X) = 152*0.61 = 92.72$

$\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{152*0.61*0.39} = 6.01$

Probability that no less than 95 out of 152 registered voters will vote in the presidential election.

This is, using continuity correction, $P(X \geq 95 - 0.5) = P(X \geq 94.5)$ , which is 1 subtracted by the pvalue of Z when X = 94.5. So

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

$Z = \frac{94.5 - 92.72}{6.01}$

$Z = 0.3$

$Z = 0.3$ has a pvalue of 0.6179

1 - 0.6179 = 0.3821

0.3821 = 38.21% probability that no less than 95 out of 152 registered voters will vote in the presidential election.

6 0

3 years ago