If 45 percent of the homework is only 27 problems, she needs to figure out this:
What is 47 percent of 60?
or
47% x 60
Which is 27.
So, Yolanda was assigned 60 problems.
Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x . ") This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.
Not true, at least not always. When we are talking about an isosceles triangle there will be two equal altitudes and one is different. In case of a regular triangle all the other three altitudes have equal length! :)
Step-by-step explanation:
180 degrees is (-a, -b) and 360 is (a, b). 360 degrees doesn't change since it is a full rotation or a full circle. Also this is for a counterclockwise rotation. If you want to do a clockwise rotation follow these formulas: 90 = (b, -a); 180 = (-a, -b); 270 = (-b, a); 360 = (a, b)
Answer:
4 years
Step-by-step explanation:
Forty rabbits , increasing by 50% each year
first year : 40+(40*50%)= 60 rabbits
second year: 60+(60*50%)=90
third year : 90+(90*50%)=135
fourth year: 135+(135*50%)= 202.5 ≅ 203 rabits
after 4 years
40(1+0.5)^4= 202.5 ( almost 200)
