All categories

2 years ago

PLS HELP QUICKLY !!!!!!

Mathematics

2 answers:

Blababa [14]2 years ago

7 0

Answer:

C. (250)2 + (–400)2 + (–250)2 + (350)2 + (100)2 + (–50)2 = 420,000

Step-by-step explanation:

None

Olegator [25]2 years ago

3 0

Answer: Choice C)

--------------------------------------

mean = xbar = (2400+1750+1900+2500+2250+2100)/6
mean = 2150

Subtract the data values from the mean to get

2400-2150 = 250
1750-2150 = -400
1900-2150 = -250
2500-2150 = 350
2250-2150 = 100
2100-2150 = -50
The differences are: 250, -400, -250, 350, 100, -50

Then you square those values and add up the squares

(250)^2 + (-400)^2 + (-250)^2 + (350)^2 + (100)^2 + (-50)^2 = 420,000

You might be interested in

Rounding decimals 324,650

Cloud [144]

It depends how many decimal points you are moving. If it's 1 decimal point then the point would move to the right and the answer would be 3246.50if it was two decimal places then it moves two to the right and the answer would 32465.0. But you don't need to put the .0 at the end so it will be 32465

3 0

2 years ago

Read 2 more answers

Simplify the expression. Quantity cosecant of x to the power of two times secant of x to the power of two divided by quantity se

Art [367]

Answer:

D. 1

Step-by-step explanation:

We have the expression, $\frac{\csc^{2}x\sec^{2}x}{\sec^{2}x+\csc^{2}x}$

We get, eliminating the cosecant function,

$\frac{\sec^{2}x}{\frac{\sec^{2}x}{\csc^{2}x}+1}$

As, sinx is reciprocal of cosecx and cosx is reciprocal of secx,

i.e. $\frac{\sec^{2}x}{\frac{\sin^{2}x}{\cos^{2}x}+1}$

i.e. $\frac{1}{\cos^{2}x}\times \frac{\cos^{2}x}{\sin^{2}x+\cos^{2}x}$

Since, we know that, $\sin^{2}x+\cos^{2}x=1$

Thus,

$\frac{1}{\cos^{2}x}\times \frac{\cos^{2}x}{\sin^{2}x+\cos^{2}x}=1$

So, after simplifying, we get that the result is 1.

Hence, option D is correct.

3 0

2 years ago

What 8(9+16) plz i need help

Fynjy0 [20]

I think it would be 8*9+8*16 which would be 72+128= 200

3 0

3 years ago

Read 2 more answers

PLEASE HELP ME WITH THIS

Nataly [62]

Answer:4/10

Step-by-step explanation:

6 0

2 years ago

Probability problem. Suppose you have a six-sided die (singular of dice). What is the probability of rolling a number less than

Ainat [17]

Answer is 2/3. You have a 1/6 chance of getting all of the numbers. If you want the numbers equal to or under than 4 that would be 4/6 which equals 2/3.

6 0

2 years ago