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Answer:
p=1
Step-by-step explanation:
A deck has a combined 52cards.
Given that you're certain to select a red or black card:-
p(red)=>
p(black)=>
Therefore total probability of selection is expressed as:-

Answer:

Step-by-step explanation:
Sum of X and 8: 
Product of seven and 10: 
Put them together:

Answer:
b(4x+3)(2x+1)
Step-by-step explanation:
just took the test
Answer: the degree of the angle if that is what you're asking is 257 degrees