Answer:
49:28
Step-by-step explanation:
7+4=11
77/11=7
7*7=49
4*7=28
Answer:
x=1.75
Step-by-step explanation:
6x+6=2x+13
-6
6x=2x+7
-2x
4x=7/4
Answer:
112
Step-by-step explanation:
m<pmo + m<qmn = m<pmn 90+22=112
Answer:
The expected value of the number of spades are = 4.25
Step-by-step explanation:
As per the question,
W know that in a standard deck of 52 playing card, there are 4 suits, and each suit have 13 playing card.
Since, we know that

Therefore,
Probability of any random card being a spade is


So the expected number of spades we draw are


Hence, the expected value of the number of spades are = 4.25