The length of a river is 480km. What is its length on a map with a scale 1 : 5,000,000?

answer: a.   one is a factor of every whole number since every number is divisible by itself.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3