answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleksandr [31]
2 years ago
4

The angle \theta_1θ

Mathematics
1 answer:
otez555 [7]2 years ago
3 0

Answer:

sin ( θ ) = 3√21 / 17

Step-by-step explanation:

Given:-

- The angle (θ) lies in the first quadrant. Where theta is defined as:

                              cos ( θ ) = 10 / 17

Find:-

- Find sin ( θ ) :

Solution:-

- We will draw a right angle triangle in the first quadrant. With base, B = 10 and hypotenuse H = 17. Since,

                              cos ( θ ) = B / H = 10 / 17

- Using pythagorean theorem determine the perpendicular side length:

                              H^2 - B^2 = P^2

                              17^2 - 10^2 = P^2

                              √189 = P

                             P = 3√21

- Now evaluate sin ( θ ):

                              sin ( θ ) = P / H

                              sin ( θ ) = 3√21 / 17

You might be interested in
. Cara is playing a game. For each dart she can toss onto a board, she
Kaylis [27]
She will need 12 seconds because -20•12=-240
6 0
2 years ago
Chris and Ben walked home from school. The distance Chris walked,in miles, is represented by point C on the number line. Ben wal
Xelga [282]

first you divide the amount of miles chris walked with 1/4 or .25 miles then you will get the answer

3 0
2 years ago
Suppose that the Department of Transportation would like to test the hypothesis that the average age of cars on the road is less
dimulka [17.4K]

Answer:

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

z_{critc}= -1.64

Since our calculates values is lower than the critical value we have enough evidence to reject the null hypothesis at 5% of significance. And the best conclusion for this case is:

B. Since the test statistic is less than the critical value, we can conclude that the average age of cars on the road is less than 12 years.

Step-by-step explanation:

Data given and notation  

\bar X=10.6 represent the sample mean

\sigma=4.1 represent the population standard deviation

n=45 sample size  

\mu_o =12 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is less than 12, the system of hypothesis would be:  

Null hypothesis:\mu \geq 12  

Alternative hypothesis:\mu < 12  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

Critical value

For this case since w ehave a left tailed distribution we need to find a value who accumulates 0.05 of the area on th left in the normal standard distribution, and we can use the following excel code:

"=NORM.INV(0.05,0,1)"

z_{critc}= -1.64

Conclusion  

Since our calculates values is lower than the critical value we have enough evidence to reject the null hypothesis at 5% of significance. And the best conclusion for this case is:

B. Since the test statistic is less than the critical value, we can conclude that the average age of cars on the road is less than 12 years.

3 0
2 years ago
The data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. The standard deviation of this dat
KiRa [710]
Hello,
Please, see the attached files.
Thanks.

4 0
2 years ago
Read 2 more answers
What is the lateral area of a right rectangular prism that has rectangular bases measuring 3" by 5" and a height of 6"?
Mademuasel [1]

Answer:

The answer is the option A

96\ in^{2}

Step-by-step explanation:

we know that

The lateral area of a right rectangular prism is equal to

LA=P*h

where

P is the perimeter of the base

h is the height of the prism

Find the perimeter

P=2*(3+5)=16\ in

h=6\ in

substitute in the formula

LA=16*6=96\ in^{2}

6 0
2 years ago
Read 2 more answers
Other questions:
  • if Amanda hikes at an average speed of 2.72 miles per hour, how long will it take her to hike 6.8 miles
    11·2 answers
  • The population of Ashmore was 925 in 2000 and in 1028 in 2001. the linear model for ashmores population is p= 103t+925, where th
    6·2 answers
  • In a country where prices are rising quickly, bread that now costs $1.39 will cost 2.4 times as much next year. How much will th
    12·2 answers
  • Leah has The flowers shown she wants to put them in 4 vases with the same number in each case how many flowers does she need to
    6·1 answer
  • Rewrite this statement: 8x2+5=56 with one pair of brackets to make it correct.
    12·2 answers
  • There are 11 balls numbered 1 through 11 placed in a bucket. What is the probability of reaching into the bucket and randomly dr
    15·1 answer
  • The porter family is moving from Baltimore, Maryland, to San Francisco, California. They would like to know what the difference
    11·2 answers
  • O is the centre of the circle, EF is a tangent, angle BCE=28 degrees, angle ACD=31 degrees.
    13·1 answer
  • The following data represent weights (pounds) of a random sample of professional football players on the following teams. X1 = w
    5·1 answer
  • The pie chart below shows the percentage of total revenue that a publisher receives from various types of publications. Use this
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!