60ft
Because the formula for a regular polygon is A=1/2(apothem)(perimeter). So first you would do is 1/2 times 4 which equals 4/2. 4/2 times 30 is 60, so 60 is the area.
C. 120 because 30 multiplied by 4 is 120. The equation would be y=4x based on the numbers in the table
Answer: x=1/4y + -3/4
Step-by-step explanation:
Answer:
(a) 1/2
(b) 9/10
Step-by-step explanation:
Probability is given by number of possible outcomes ÷ number of total outcomes
(a) Number of possible outcomes = 5 questions, number of total outcomes = 10 questions
Probability (I answer all 5 problems correctly) = 5/10 = 1/2
(b) Probability (I answer at least 4 of the problems correctly) means I either answer 4 of the problems or all 5 problems correctly = 4/10 + 5/10 = 9/10
