what is the point slope from of the line with slope 2/5 that passes through the point (-4,-7)

a: y-4=2/5(x-7)
b: y-7=2/5(x-4)
c: y+7=2/5(x+4)
d: y+4=2/5(x+7)

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

Find the measure for the angle indicated in bold