All categories

3 years ago

The numbers of chocolate

Mathematics

1 answer:

Mrrafil [7]3 years ago

8 0

mean = sum/n

mean = (5 + 7 + 7 + 9 + 12 + 16 + 21)/7

mean = 77/7

mean = 11

You might be interested in

(a) How many different 7-place license plates are possible if the first 2 places are for letters and the other 5 for numbers?

Olegator [25]

Answer:

a) 67600000 possible plates

b) 19656000 possible plates where neither digit or letter are repeated

Step-by-step explanation:

The easiest way to solve this problem is seeing how many possibilities and there for each place in the license plate:

We have the following 7 places:

P1 - P2 - P3 - P4 - P5 - P6 - P7

The alphabet has 26 letters and there are 10 digits. So,

a) For each position there are the following possibilites

26 - 26 - 10 - 10 - 10 - 10 - 10

So in all, there are, 26*26*10*10*10*10*10 = 67600000 possible plates

b) Let's do the possibilites for each position again. Now, no letter or number can be repeated, so.

P1 is still 26. Now for P2, the letter in position P1 cannot be repeated, so there are only 25 possibilies. As for the digits, for P3, the first digit, there are still 10 possibilities. For P4, there are 9, since the digit in P3 cannot be repeated. For P5 there are 8, since P3 and P4 cannot be repeated... So there are the following number of possibilities:

26-25-10-9-8-7-6

In all, there are 26*25*10*9*8*7*6 = 19656000 possible plates where neither digit or letter are repeated.

5 0

3 years ago

I need help with this question

balu736 [363]

Answer and Step-by-step explanation:

What the question is asking is that it wants you to make the equation show equal to n.

We can do that by dividing both sides by RT, to get n by itself.

$PV = nRT\\\\\\\frac{PV}{RT} = n$ ⇔ This is the answer.

#teamtrees #PAW (Plant And Water)

4 0

3 years ago

For a given geometric sequence, the 9th term, a9, is equal to 43/256 and the 14th term, a14, is equal to 172. Find the value of

NeX [460]

Maybe solve by dividing. I think 5/6. Sorry math isn’t my strong suit. I’m good at reading.

5 0

3 years ago

Finding the missing angles ?

bazaltina [42]

Answer:

1. 46

2. 46

3. 134

4. 134

5. 46

6. 46

7. 134

This is going from top right, left to right.

8 0

2 years ago

This equation shows how Rocky the puppy's weight varies with age.

dybincka [34]

Answer:

Age of Rocky = 5 months

Step-by-step explanation:

Given that:

Equation for calculating puppy's weight

p = 3a + 2

Here,

p = weight of puppy

a = age in months

We have to find the age if the weight is 17 pounds

Putting p=17 in given equation

17 = 3a + 2

17 - 2 = 3a

3a = 15

Dividing both sides by 3

$\frac{3a}{3}=\frac{15}{3}\\a=5$

Hence,

Age of Rocky = 5 months

6 0

3 years ago