Josiah ran 4/5 mile. how many tenths are equal to 4/5 mile? use bar diagrams to find the answer.

Answers

Answer 1

Answer: 8/10 are equal to 4/5 because 4×2=8 and 5×2=10 so 8/10

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smith wants to rearrange all the letters of the word "OUT" in different ways. how many possible ways could he do it

Answers

slot method
3 slots
1st slot, 3 options
2nd slot, 2 options (1 went to first slot)
3rd slot, 1 option(1 went to 2nd slot)

3*2*1=6
6 ways

anita has two sisters and three brothers. the mean of all their ages is 6 years. what will their mean age be 10 years from now?twenty years from now?

Answers

Answer:
Now: 6 yr mean age
in 10 yrs? 16 yr mean age
in 20 yrs? 26 yr mean age

Why? Because regardless of the relationship between each sibling's age, your always adding the 10yrs to each individual, which you are then dividing out to determine the mean age. See proof below:

Including anita, there are 6 people. We'll define each age as an unknown variable. Assume we know nothing about the relationships between their ages

for example sake
anita's age = a
sister 1's age = b
sister 2's age = c
brother 1's age = d
brother 2's age = e
brother 3's age = f

Now:
mean age = (a + b + c + d + e + f)/(6 people) = 6 yrs

in 10 yrs:
mean age = ((a+10) + (b+10) + (c+10) + (d+10) + (e+10) + (f+10))/(6 people)
mean age = (a + b + c + d + e + f + 60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + (60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + 10

Notice the first term is the same expression of the mean age for "Now"
Thus, in 10 yrs:
mean age = 6 + 10 = 16 yrs

The same principle applies for "x" yrs from now, as long as we know what the mean age is "Now"

Answer:

10 years from now= 16

20 years = 26

Step-by-step explanation:

A) write a relation for perimeter of a square with side length n centimetres

Answers

The perimeter of a square is equal to the side length times 4.

The equation is P = 4S, with P being the perimeter, and S being a side.

Also, to get the length of a side from the perimeter, just divide the perimeter by 4.

To have it in centimeters, just add cm to the end of your answer!

For which of the following possible values of n will the expression the smallest value? (5n)/4 have the smallest value?A. -8
B. -4
C. 4
D. 8