All categories

3 years ago

Find the exact value cos5pi/6

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

Answer:

$- \frac{ \sqrt{3} }{2}$

Step-by-step explanation:

Unit circle

You might be interested in

Pls i need help ASAP best answer gets brainlest

Pani-rosa [81]

Answer:

3^12

Step-by-step explanation:

Simplify the expression, 3^10/3^-2.

Next, solve for the sum. which will be 3^12.

Full answer is 531441

3 0

3 years ago

Read 2 more answers

rom a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Ve

andrezito [222]

Answer:

probability that Marnie and Noomi are both selected=0.1

Step-by-step explanation:

A group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Vegas.

the possibility of selecting 2 from 5 manages is 5C2 ways

$5C2= \frac{5!}{2!(5-2)!} =10$

There is only one choice of selecting Marine and Noomi from 5 managers

So probability of selecting Marine and Noomi is

$\frac{1}{10} =0.1$

5 0

2 years ago

The SAT Reasoning Test (formerly called the Scholastic Aptitude Test) is perhaps the most widely used standardized test for coll

slamgirl [31]

Answer:

The score is $x = 1884$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 1500$

The standard deviation is $\sigma = 300$

From the question we are told that the score follow a normal distribution

i.e $X \~ \ N( 1500 , 300)$

The proportion of score in the top 10% is mathematically

$P(X > x ) = P( \frac{X - \mu}{\sigma } > \frac{x - \mu}{\sigma } ) = 0.10$

Where x is the minimum score required to be in the top 10%

Now the $\frac{X - \mu}{\sigma } = Z (The \ Standardized \ value \ of \ X)$

$P(X > x ) = P( Z > \frac{x - \mu}{\sigma } ) = 0.10$

$P(X > x ) = P( Z > \frac{x - 1500}{300} ) = 0.10$

So the critical value of 0.10 from the normal distribution table is $Z_{0.10} = 1.28$

$\frac{x - 1500}{300} = 1.28$

$x = 1884$

6 0

3 years ago

What is 4 1/3 divided by 3

kipiarov [429]

Answer:

13/9 or 1 4/9

Step-by-step explanation:

5 0

2 years ago

Solve the proportion.

zmey [24]

Problem

8 over 3

g over 3

Cross multiply

8 × 3 = 24

g × 3 = 3g
__________

24 × 3g
--- ----
3 3
(Cross out "3g" and "3" on the right )

Then "divide" 24 and 3. It should leave you with 8

Your answer: g= 8

7 0

3 years ago