Please show all work for both questions thank you

21) The perimeter of a square is P=4s where s is the side length. Since all the sides of a square are of equal length, we know that the side lengths must be 12 because if we made the square into two 45-45-90 triangles, the hypotenuse is equal to the side length times the square root of 2. So we do the inverse to get a side length of 12. Now we can do P=4(12) to get a perimeter of 48 units.

22) Now we're doing the opposite. We already have the perimeter, so we need one side length, and that's done by s=P/4 which would be s=48/4 or s=12. Remember that in a 45-45-90 triangle, the hypotenuse is equal to the side length times the square root of 2. So 12*sqrt(2) is 12sqrt(2) miles, and that's your square's diagonal length (coincidentally the same as the previous problem, but just in different units).

Hope these explanations made sense!

black/brown

step-by-step explanation:

well, you see here, jamal was born to 2 parents, his mother who he lives with and his father who left at a young age and who happens to be younger than him. he stole cookies because he has to steal food due to the fact that he spends his government poverty checks on pot and women.

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !