M=9/5p+18
9/5p=m-18
9p=5(m-18)
p=[5(m-18)]/9
Answer: 
Step-by-step explanation:
The formula for calculating mean = sum of each data / total number
Let the age of the sixth person be x , then
mean = 23 + 13 + 17 + 12 + 15 + x / 6
That is :
22 = 23 + 13 + 17 + 12 + 15 + x / 6
22 = 
= 22 x 6
Answer:
90
Step-by-step explanation:
3 boys
5 girls,
Say that there where "x" number of groups like this, (x will be the total number of groups like this, if one were to divide the population by the number of groups, they would the number of students);
Set up an equation;
x ( 3 + 5 ) = 240
Combine like terms and distribute;
8x = 240
Inverse operations;
8x = 240
/8 /8
x = 30
Substitute back in to find the number of boys;
30 * 3 = 90
Answer:
-99 divided by 9 is -11
Step-by-step explanation:
a negative divided by a positive is a negative and a positive divided by a negative is a negative .
but a negative divided by a negative is a positive
1038 grams left or 1.038 kg because you have to subtract .1 from the kg from the ducks bc its in the same unit and then convert that by dividing it by 1000 to get to grams bc 1kg=1000g so then you subtract the grams from converted answer and then you get the answer
