. Mary sees 10 ravens and 5 blackbirds in a tree. Which of the following best compares the number of ravens and blackbirds in the tree?
A. The ratio of ravens to blackbirds in the tree is 3:2 because, of every 3 birds in the tree, 2 are not blackbird
B. The ratio of ravens to blackbirds in the tree is 1:2 because, for every raven in the tree, there are 2 blackbirds in the tree.
C. The ratio of ravens to blackbirds in the tree is 2:3 because 2 of every 3 birds in the tree are ravens.
D. The ratio of ravens to blackbirds in the tree is 2:1 because there are twice as many ravens as blackbirds in the tree.

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Nicolo paganini's numbers 1184 and 1210 are amicable. the proper divisors of 1184 are 1, 2, 4, 8, 16, 32, 37, 74, 148, 296, and 592. the proper divisors of 1210 are 1, 2, 5, 10, 11, 22, 55, 110, 121, 242, and 605. use the definition of amicable (friendly) numbers to show that they are indeed amicable. which of the folowing statement uses the definition of amicable numbers to show that 1184 and 1210 are indeed amicable? o a. o b. ° c. the sum of proper divisors of 1184 is 1210 and the sum of proper divisors of 1210 is 1184 the sum of proper divisors of 1184 is greater than 1210 and the sum of proper divisors of 1210 is greater than 1184 the sum of proper divisors of 1184 is less than 1210 and the sum of proper divisors of 1210 is less than 1184