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3 years ago

Please help me out with thissssss No links no stealing points

Mathematics

1 answer:

Mrac [35]3 years ago

7 0

Answer:

yes

Step-by-step explanation:

congurency property can be used for all right angles triangles

that's all ....have fun

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What is √180 * 2√30 simplified?

Alex73 [517]

√180 x 2√30
√36 x 5 x 2√30
6√5 x 2√30
12√5 x √30
12√5 x 30
12√150
12√25 x 6
12 x 5√6
60√6

8 0

3 years ago

A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to

tatuchka [14]

Answer:

Step-by-step explanation:

This is a test of 2 independent groups. The population standard deviations are not known. it is a two-tailed test. Let μ1 be the true mean completion time for the new algorithm and μ2 be the true mean completion time for the current algorithm.

The random variable is μ1 - μ2 = difference in the mean completion time between the new algorithm and the current algorithm.

We would set up the hypothesis.

The null hypothesis is

H0 : μ1 ≤ μ2 H0 : μ1 - μ2 ≤ 0

The alternative hypothesis is

H1 : μ1 > μ2 H1 : μ1 - μ2 > 0

Since sample standard deviation is known, we would determine the test statistic by using the t test. The formula is

(μ1 - μ2)/√(s1²/n1 + s2²/n2)

From the information given,

μ1 = 19.15

μ2 = 22.01

s1 = 5.784

s2 = 4.293

n1 = 53

n2 = 53

t = (19.15 - 22.01)/√(5.784²/53 + 4.293²/53)

t = - 2.89

The formula for determining the degree of freedom is

df = [s1²/n1 + s2²/n2]²/(1/n1 - 1)(s1²/n1)² + (1/n2 - 1)(s2²/n2)²

df = [5.784²/53 + 4.293²/53]²/[(1/53 - 1)(5.784²/53)² + (1/53 - 1)(4.293²/53)²] = 0.958/0.0099876314

df = 100

We would determine the probability value from the t test calculator. It becomes

p value = 0.0023

Since alpha, 0.05 > than the p value, 0.0023, then we would reject the null hypothesis.

4 0

3 years ago

4y+8x=78<br> solve for the values of x and y

mamaluj [8]

Y=39/2-2X
X=39/4-1/2Y

3 0

4 years ago

PLS HELP I WILL GIVE BRAINLIEST 1- If you are driving at a constant speed of 55 miles per hour, give an estimate of how many mil

Hatshy [7]

Answer:

1- 72 miles

2-$3

3- 50(0.50 x c)

Step-by-step explanation:

For Number 1 we have to do 55 divided by 60 which is about 0.90 and then we multiply that by 1 hour and 20 minutes which in minutes is 80. 0.90 x 80 = 72 exactly.

For Number 2 we have to divide 36.25 by 11.5 rounded is 36/12 whish is 3.

For number 3 c stands for number of channels

Hope i could help! :DD

8 0

2 years ago

Imagine you are a financial analyst at an investment bank. According to your research of publicly-traded companies, 60% of the c

lilavasa [31]

Answer:

0.0667 = 6.67% probability that the shares of a company that fires its CEO will increase by more than 5%.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this problem:

Event A: Company fires the CEO

Event B: Shares increase by more than 5%.

Probability of a company firing it's CEO:

35% of 100 - 4 = 96%(shares did not increase by more than 5%).

60% of 4%(shared did increase by more than 5%).

$P(A) = 0.35*0.96 + 0.6*0.04 = 0.36$

Intersection of events A and B:

Fires the CEO and shared increased by more than 5%, is 60% of 4%. So

$P(A \cap B) = 0.6*0.04 = 0.024$

Probability that the shares of a company that fires its CEO will increase by more than 5%.

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.024}{0.36} = 0.0667$

0.0667 = 6.67% probability that the shares of a company that fires its CEO will increase by more than 5%.

5 0

3 years ago