Answer:
9 + 10 = 21
Step-by-step explanation:
9 + 10 = 21
Factor out 9 and 10
9 = 3 · 3 10 = 2 · 5
Next multiply 3 by 2
3 × 2 = 6
Then multiply 3 by 5
3 · 5 = 15
Finally add the products
15 + 6 = 21
Answer:
A
Step-by-step explanation:
You choose a tree and have anotherbpeeson choose a tree. You then both take the numbers on your trees and add them together. Then you check if you got the same answers. You keep on doing this until you do all the trees I think.
In 1 hour, a machine could make:
parts
In 28.8 hours, that machine make
parts
Suppose there are x number of clubs in the pack
P( draw a diamond) = 13 / 59
P( draw a club) = x / 58
so P( diamond then a club) = 13x / (58*59) = 13x / 3422
so we have the equattion
117 / 1711 = 13x / 3422
234 / 3422 = 13x / 3422
therefore x = 234 / 13 = 18 clubs :-
that is 5 more clubs than in a normal pack
So the number of extra spades = 59 - 52 - 5 = 2