Olve the following problems. Write your Solutions in a se • A dart board has a diameter of 40 cm and is divided into 20 congruent sectors. What is the
area of one of the sectors?
a. 2017 cm
b. 40л cm2
C. 80 cm?
d. 800 cm?
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What does x = in this equation x+3+2x=x+5

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Select the correct answer and solve for y