Answer:
4
Step-by-step explanation:
(21 + 5) : 2 = 13
(7 + 9) : 2 = 8
(36 + 2) : 2 = 19
(1 + 7) : 2 = 4
Answer:
About 14
Step-by-step explanation:
For this you use the pythagorean theorem, which says a(a) + b(b) = c(c)
The sides that make the right angle are legs which is A and B
The other side is the hypotenuse which is C
So you set it up as
11(11) + b(b) = 18(18)
121 + b(b) = 324
324 - 121 = 203
so b(b) = 203
but 203 is b squared so you need to find the square root of 203 which is about 14.2478.
If you round that it is 14
Check
11(11) + 14(14) = 18(18)
121 + 196 = 324
317 = 324
so about
I use math-a-way it answers questions like that
You and your friend are comparing baseball cards you have 9 less than 5 time few cards than he does
