Answer:
concluded
Step-by-step explanation:
this means to bring to an end.
Suppose there are n people in this family
one parent is age 40, suppose the rest of the family add up to be y years old
the average is (40+y)/n=20 =>40+y=20n
exclude the 40-year-old parent, the sum of age is still y, the number of family is (n-1), the average is y/(n-1)=15 =>y=15n-15
substitute y=15n-15 in the first equation: 40+(15n-15)=20n
solve for n: 5n=25, n=5
there are a total of 5 people in this family, there are 3 kids.
Answer:
N! = 362,880
There are 9 factorial ways because there are 9 choices for position 1, 8 choices for position 2, 7 choices for position 3, etc.
The answer it’s 0 of x^3=27
Answer:
The Range of possible measures for the third side is; 2 < C < 16
Step-by-step explanation:
In a triangle with sides A , B and C , the sum of the length of any two sides of a triangle must be greater than the third side:
Given the two sides of a triangle are 7 and 9.
Let A = 7 and B = 9 then;
B-A< C < A+B
Then; the range of C can be:
9-7 < C < 7+9
Simplify:
2 < C < 16
Therefore, the range of possible measures for the third side is; 2 < C < 16