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
Ksju [112]
3 years ago
7

Can someone help me please

Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

It's 28

Step-by-step explanation

You might be interested in
ILL BRAINLIEST YOU IF YOU GET IT RIGHT! Please help me
lara31 [8.8K]

Answer:

x = 25

Step-by-step explanation:

If JK and MN are parallel lines, then ∠JKL = ∠LMN = 61°

By the opposite angle rule, ∠JLK = 39°

In a triangle three angles sum up to 180°

so, ∠JLK + ∠JKL +LJK = 180°

39° + 61° + 3x+ 5 = 180°

3x = 75

x = 25

5 0
3 years ago
Read 2 more answers
How would you do these questions?
Delvig [45]

Part 1

Population = {1,2,4}

Sample 1 = {1,1}, probablity = 1/9

Sample 2 = {1,2}, probablity = 1/9

Sample 3 = {1,4}, probablity = 1/9

Sample 4 = {2,1}, probablity = 1/9

Sample 5 = {2,2}, probablity = 1/9

Sample 6 = {2,4}, probablity = 1/9

Sample 7 = {4,1}, probablity = 1/9

Sample 8 = {4,2}, probablity = 1/9

Sample 9 = {4,4}, probablity = 1/9

Each of the 9 samples has equal probablity of occuring, so that's why each probablity is 1/9

Note: it may be best to write the above in the form of a table

==================================================

Part 2

For each sample (1 through 9), compute the mean. So we'll add up the values and divide by 2

xbar represents the sample mean

Sample 1 = {1,1}, xbar = 1

Sample 2 = {1,2}, xbar = 1.5

Sample 3 = {1,4}, xbar = 2.5

Sample 4 = {2,1}, xbar = 1.5

Sample 5 = {2,2}, xbar = 2

Sample 6 = {2,4}, xbar = 3

Sample 7 = {4,1}, xbar = 2.5

Sample 8 = {4,2}, xbar = 3

Sample 9 = {4,4}, xbar = 4

----------

Now let's list out each possible xbar value and its associated probability

xbar = 1, probability = 1/9

xbar = 1.5, probability = 2/9

xbar = 2, probability = 1/9

xbar = 2.5, probability = 2/9

xbar = 3, probability = 2/9

xbar = 4, probability = 1/9

note how the probabilities listed above add to 9/9 = 1.

Again a table is ideal to help organize the data.

==================================================

Part 3

To calculate the value of mu_x, we add up all the xbar values found in part 2, and divide by 9

(1+1.5+2.5+1.5+2+3+2.5+3+4)/9 = 2.333

So mu_x = 2.333 approximately

----------

Calculating the standard deviation is a bit lengthier, but you subtract each data value from the mean, square each difference, and add up the squares.

Afterward, you divide by n = 9 to get the population variance. Apply the square root to get the population standard deviation.

Luckily a calculator or spreadsheet can make quick work of this. You should get roughly 0.88192 as the standard deviation.

==================================================

Part 4

The mean of the population {1,2,4} is (1+2+4)/3 = 2.3333 which matches with mu_xbar

The standard deviation of the population {1,2,4} is roughly 0.88191710368819 which matches with 0.88192 found earlier back in part 3.

6 0
3 years ago
Consider the numbers 3/10 and 4/13
serg [7]
Make bototm number same
3/10 times 13/13=39/130
4/13 times 10/10=40/130

A.
39/130 and 40/130
they are 1/130 apart


B.
a ratioal number between
39/130=390/1300
40/130=400/1300
between 390/1300 and 400/1300
any number from 391/1300 to 399/1300 example 395/1300


3 0
3 years ago
Simplify 2(x + 4) + 3(x - 4)<br><br> 5x - 4<br> 5x<br> 5x + 4
AnnyKZ [126]
The answer to this problem is 5x-4

7 0
3 years ago
Evaluate C(3, 3)<br><br> 1<br> 6<br> 24
Anestetic [448]

Answer:

1

Step-by-step explanation:

Using the definition

nC_{r} = \frac{n!}{r!(n-r)!}

where n! = n(n - 1)(n - 2) × 3 × 2 × 1

and 0! = 1

3C_{3}

= \frac{3!}{3!(3 - 3)!}

= \frac{3!}{3!(0!)}

= \frac{3!}{3!} = 1

4 0
3 years ago
Other questions:
  • what are the slope and the y- intercept of the line described by the equation y=4x-7? a. slope:4; y-intercept0,7) b. slope: -7:
    7·1 answer
  • 3 (7-9x)-5 (5x+1)=-8 (9x-4)
    15·1 answer
  • Pleaseee help!!!!!!!!!!!!
    5·1 answer
  • -1/3x&lt;48 solve this inequality
    12·1 answer
  • A bus carried 80passengers 40% of them were women ,12 passengers were children . How many men were there.​
    10·1 answer
  • Please help:<br> Find the class width of this graph
    5·1 answer
  • Write each value in standard form.
    12·1 answer
  • In the above diagram, you see a standard deck of cards. Answer each of the following questions using this deck of cards.
    14·1 answer
  • Using the standard 28/36 guidelines. what is the maximum mortgage payment allowed for someone with an annual salary of $62,550?
    11·1 answer
  • In a recent study, your town's chamber of commerce found that 73% of town residents believed that local businesses overcharged f
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!