1answer.
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
Lina20 [59]
3 years ago
12

Given tanø=(4/3) and 0<ø<(3pi/2) find cos20

Mathematics
1 answer:
ycow [4]3 years ago
5 0

Answer:

Step-by-step explanation:

hello :

here is an solution

You might be interested in
What is the surface area of a cone with a radius of 15 and a height of 8
Rasek [7]

formula is pi*r*(r+sqaureroot(h^2+r^2)


 plug in the numbers and the calculated area is 1507.96

 but since you cant use fraction or decimals

 the answer should be 480PI

8 0
2 years ago
Work out the area of a rectangle with base 18mm and perimeter 38mm
frez [133]

Answer:

684 mm squared

Step-by-step explanation:

Very simple. It's 18mm multiplied by 38 mm.

18 mm * 38 mm = 684 mm2

5 0
2 years ago
The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is dra
olga2289 [7]

Using the normal distribution, there is a 0.2148 = 21.48% probability that the sum of the 40 values is less than 7,100.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
  • By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation s = \frac{\sigma}{\sqrt{n}}.

For this problem, these parameters are given as follows:

\mu = 180, \sigma = 20, n = 40, s = \frac{20}{\sqrt{40}} = 3.1623

A sum of 7100 is equivalent to a sample mean of 7100/40 = 177.5, which means that the probability is the <u>p-value of Z when X = 177.5</u>, hence:

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

By the Central Limit Theorem:

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

Z = \frac{177.5 - 180}{3.1623}

Z = -0.79

Z = -0.79 has a p-value of 0.2148.

There is a 0.2148 = 21.48% probability that the sum of the 40 values is less than 7,100.

More can be learned about the normal distribution at brainly.com/question/28135235

#SPJ1

5 0
2 years ago
NEED HELP ASAP OR NOW!!!
Leokris [45]
The first question would be A and Cis the answer for the second question!!
7 0
3 years ago
Read 2 more answers
What is the slope of (<br> 6<br> ,<br> −<br> 6<br> and (<br> −<br> 18<br> ,<br> 3<br> )
jenyasd209 [6]

Answer:

The slope is -3/8

Step-by-step explanation:

(6,−6);(−18,3)

(x1,y1)=(6,−6)

(x2,y2)=(−18,3)

Use the slope formula:

m= y2−y1 /x2−x1

3−−6 /−18−6  

9 /−24

−3 /8

6 0
2 years ago
Read 2 more answers
Other questions:
  • elijah spent $5.25 for lunch every day for 5 school days.he spen $6.75 on saturday.How much did he spend in all?
    7·1 answer
  • The graph shows the solution to which system of equations?
    11·1 answer
  • 14400:(270-х)+520=680
    6·1 answer
  • What is x/5 + 3 = 10 solve for x
    12·2 answers
  • If you pay 1875$ to get a 750 sq. ft. house . How much would a 1300 painting job cost
    12·1 answer
  • Which of the following could be the number shown on the number line?
    6·1 answer
  • What type of association (positive, negative, no) is shown between the price of a ticket and concert attendance?
    7·1 answer
  • Π=what<br><br> plz all the numbers of pie<br><br> the winner gets 100 coins and brainless
    8·1 answer
  • Last one, Estimate the perimeter and the area of the shaded figure
    8·1 answer
  • What is the trig. ratio for the tangent of angle C? Be sure to simply your fraction to simplest form.​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!