2 years ago

If the average (arithmetic mean) of 10,20,30,40, and x is 60, what is the value of x

Mathematics

1 answer:

Lilit [14]2 years ago

8 0

60 = (10 + 20 + 30 + 40 + x)/5

300 = 100 + x

x = 200

Answer: 200

You might be interested in

The annual 2-mile fun-run is a traditional fund-raising event to support local arts and sciences activities. It is known that th

victus00 [196]

Answer: 0.0228

Step-by-step explanation:

Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-

$\mu=30\\\\\sigma=5.5$

If the distribution of finish times is approximately bell-shaped and symmetric, then it must be normally distributed.

Let X be the random variable that represents the finish times for this event.

z score : $z=\dfrac{x-\mu}{\sigma}$

$z=\dfrac{19-30}{5.5}=-2$

Now, the probability of runners who finish in under 19 minutes by using standard normal distribution table :-

$P(X$

Hence, the approximate proportion of runners who finish in under 19 minutes = 0.0228

8 0

2 years ago

Question 8 c

balandron [24]

22 total tokens

15/22 is the probability you won’t draw a red

7 0

1 year ago

Hurry up plz it’s due in like 5 mins

777dan777 [17]

uhm i think its 15 cause you just add them all i guess

7 0

2 years ago

Read 2 more answers

Identify the slope and y-intercept of 3/5 - 1/3 x

Rudiy27

Your 3/5 - (1/3)x is an expression, not an equation. You must write out the entire equation in question:

"Identify the slope and y-int. of y = 3/5 - (1/3)x."

The y-intercept is obvious: It's 3/5.

The slope is (1/3).

5 0

2 years ago

If 90 tickets were sold at Gate C, what was the total number of tickets sold?

Paladinen [302]

756 is your answer Hope this helps

7 0

3 years ago

If the average (arithmetic mean) of 10,20,30,40, and x is 60, what is the value of x​

If the average (arithmetic mean) of 10,20,30,40, and x is 60, what is the value of x