MATHEMATICS COLLEGE

Find the unknown angles.​
Find the unknown angles.​ - 1

Answers

Answer 1
Answer:

Step-by-step explanation:

70°+70°+a°=180°

a°=180°-140°

a°=40°

p°=70° (vertically opposite angle)

q°=70°(alternate interior angles)

hope it helps

Related Questions

You are given 7 to 1 odds against rolling a sum of 6 with the roll of two fair dice, meaning you win $7 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.
Why might Jules use a credit card rather than a check to make a purchase
Rewrite 50/5 as a whole number
Write 5⁴ in expanded form. Then share the value of this exponent.
-68 divided (-4)Help ASAP

Solve the equation using a graphical method.
t/3-1/2=t+3/9

Answers

Answer:

-1.25

Step-by-step explanation:

t÷3-1÷2 = t÷1+3÷9

2t-3÷6 = 9t+3=9

18t - 27 = 54 + 18

18t -54t = 18 + 27

-36t = 45

Divide through by -36

t = -1.25

Consider the following hypothesis test. The following data are from matched samples taken from two populations. Population Element 1 2 1 21 20 2 28 26 3 18 18 4 20 20 5 26 24 Compute the difference value for each element. If your answer is "0", enter 0.a. Compose the difference valuefor each element.b. Compute d.c.Compute the standard deviation sd.d.Conduct a hypothesis test using α=.05.What is yourconclusion?

Answers

Answer:

a) d: 1  2  0  0  2

b) \bar d= (\sum_(i=1)^n d_i)/(n)= (5)/(5)=1

c) s_d =(\sum_(i=1)^n (d_i -\bar d)^2)/(n-1) =1

d) p_v =P(t_((4))>2.236) =0.0445

So the p value is lower than the significance level provided, so then we can conclude that we reject the null hypothesis that the difference mean between population 1 and 2 is less than 0. And we can say that the mean difference is higher than 0 at 5% of significance.  

Step-by-step explanation:

A paired t-test is used to compare two population means where you have two samples in  which observations in one sample can be paired with observations in the other sample. For example  if we have Before-and-after observations (This problem) we can use it.  

Let put some notation  

x=Population 1 , y = population 2

x: 21  28  18  20  26

y: 20 26  18  20  24  

a. Compose the difference valuefor each element

Let d =x-y, so the values for the difference are:

d: 1  2  0  0  2

b. Compute d.

We need the mean for the difference. If we use the following formula we got:

\bar d= (\sum_(i=1)^n d_i)/(n)= (5)/(5)=1

c.Compute the standard deviation sd.

For the standard deviation we can use the following formula:

s_d =(\sum_(i=1)^n (d_i -\bar d)^2)/(n-1) =1

d.Conduct a hypothesis test using α=.05.What is yourconclusion?

If we assume that the system of hypothesis for this case are:

Null hypothesis: \mu_x- \mu_y \leq 0

Alternative hypothesis: \mu_x -\mu_y > 0

We can calculate the statistic given by :

t=(\bar d -0)/((s_d)/(√(n)))=(1 -0)/((1)/(√(5)))=2.236

The next step is calculate the degrees of freedom given by:

df=n-1=5-1=4

Now we can calculate the p value, since we have a right tailed test the p value is given by:

p_v =P(t_((4))>2.236) =0.0445

So the p value is lower than the significance level provided, so then we can conclude that we reject the null hypothesis that the difference mean between population 1 and 2 is less than 0. And we can say that the mean difference is higher than 0 at 5% of significance.  

Final answer:

To complete this hypothesis test, calculate the difference value for each element, compute the sample mean difference (d), calculate the standard deviation (sd), and then conduct the hypothesis test using a significance level of α = 0.05.

Explanation:

To compute the difference value for each element, subtract the second value from the first value for each pair. For example, the difference for the first pair is 1-2 = -1. Repeat this for each pair of elements in the data set.

To compute the sample mean difference (d), add up all the difference values and divide by the total number of pairs. In this case, d = (-1 + 1 + 2 + 0 + 2)/5 = 0.8.

To compute the standard deviation (sd), first calculate the squared difference value for each pair and sum them up. Then divide the sum by (n-1), where n is the total number of pairs. Finally, take the square root of the result. In this case, sd = sqrt(((1-0.8)^2 + (2-0.8)^2 + (0-0.8)^2 + (2-0.8)^2)/4) = 1.32.

For the hypothesis test, we compare the sample mean difference (d) to the population mean difference (μd) under the null hypothesis. The null hypothesis states that there is no difference between the two populations. If the difference between d and μd is statistically significant at a significance level of α = 0.05, we reject the null hypothesis and conclude that there is a significant difference between the two populations. Otherwise, we fail to reject the null hypothesis.

Without information about the population mean difference (μd), we cannot perform the hypothesis test or draw a conclusion.

Learn more about Hypothesis Testing here:

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Its due soon help ill give brainliestThe price of a pair of headphones at Store A is 3/4 the price at Store B.
The price at Store A is $89.25. Find how much you save by buying the headphones at Store A
a. 119
b. 72
c. 29.75

Answers

The answer is C, 29.75

Answer:

alt answer to give ya brainliest nxsdsvfkbjnvbc

Step-by-step explanation:

cnrgnsdmx

Explain how 7/10 and 70/100 are equivalent decimals

Answers

It is proved that the given decimals are equivalent decimals.

What are equivalent fractions? What is a mathematical function, equation and expression?

  • equivalent fractions : Equivalent fractions can be defined as fractions that may have different numerators and denominators but they represent the same value.
  • function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.
  • expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.
  • equation : A mathematical equation is used to equate two expressions.

Given are the fractions -

7/10 and 70/100

We have the following fractions -

A = (7/10) = 0.7

B = 70/100 = (7 x 10)/(10 x 10) = (7/10)

B = (7/10) = 0.7

It can be seen that fraction A equals to B.

Therefore, it is proved that the given decimals are equivalent decimals.

To solve more questions on functions, expressions and polynomials, visit the link below -

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Step-by-step explanation:

7/10 in percentage form is 70%

70/100 in percentage form is 70%

Simple as that

Find r, if 6r7 = 511 8​

Answers

Answer:

121.857

Step-by-step explanation:

6×7r = 5118

42r = 5118

r = 121.857

Answer:

121.8571428571429

Step-by-step explanation:

r=  5118/42

If I buy cart 1 containing 350 pairs of shoes, I buy cart 2 containing 1000 pairs of shoes, what is the ratio of cart 1 to 2.

Answers

Answer:

7:20

Step-by-step explanation:

350:1000

35:100

5:20

Ans 5:20

Answer:

7:20

Step-By-Step Explanation:

Cart 1

350

Cart 2

1000

Ratio

350:1000

and divide both by 5

70:200

and divide both by 10

7:20

If this helped, please consider picking this answer as the Brainliest Answer. Thank you!
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