All categories

2 years ago

HeLP ASAP WiLl GiVe bRanIiEst!!!!!

Mathematics

2 answers:

riadik2000 [5.3K]2 years ago

6 0

Step-by-step explanation:

mean = 5+7+7+x /4 = 7

19+x / 4 = 7

19+x = 28

x = 9

olchik [2.2K]2 years ago

4 0

Answer:

For question 1 the answer is 6.

For question 2 the answer is 9

Question 1

In order to find the average of a set of numbers you have to add all the numbers given and then divide the value that you get by the amount of numbers added. In the question you were given 7 numbers therefore, you add all of then and then divide the value you get by 7.

Question 2

To calculate the mean we do as we did above and add all the numbers given then divide the value obtained by the amount of numbers added. However in this question we are missing a number so we substitute the value and call it *x*. So, (5+7+7+x)/ 4 = 7. we cross multiply to get 4x7 which is 28. The new equation would then be: (5+7+7+x) =28, you then group the like terms to get: 5+7+7-28 = x. Therefore x is equal to 9. Meaning that the forth number is *9*

You might be interested in

Eva invested $10,000 in a savings account. If the interest rate is 3.5%, how much will be in the account in 10 years by

Natasha_Volkova [10]

Answer:

The total in the account after 10 years would be: $14,190.68

Step-by-step explanation:

Recall the formula for continuous compounding:

$A=P\,e^{r\,t}$

where "A" is the accrued value after t years (what we need to find), "P" is the principal invested (in our case $10,000), "r" is the interest rate in decimal form (in our case r = 0.035), and "t" is the time in years (in our case t = 10). Therefore the formula becomes:

$A=P\,e^{r\,t}\\A=10000\,\,e^{0.035\,*\.10}\\A=14190.68$

Therefore the total in the account after 10 years would be: $14,190.68

5 0

3 years ago

The perimeter of a rectangle is given by the formula A= 2L + 2W, where L is the length of the rectangle and W is the width of th

Alenkasestr [34]

1) w= (a-2L)<span>÷ 2</span>

2)width= 6

4 0

2 years ago

Solve for b: 4b + 8/ -2 = 10

Vika [28.1K]

Answer:

The answer is b= 7/2

Step-by-step explanation:

hope this helps

5 0

2 years ago

Read 2 more answers

ANother question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

denpristay [2]

i am going to answer question 1, so q1 is a number line

5 0

2 years ago

Why is 2.38 not a probability?

Y_Kistochka [10]

Answer:

Probability can not exceed 1. If an event has a probability of 1, then the event is certain to happen. Example: if you have a bag of 5 blue marbles the probability that you will pull out a blue is 5/5 which simplifies to 1.

Step-by-step explanation:

3 0

3 years ago