Evaluate the expression on the picture below

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)