In a survey, it was found that 80% people liked oranges, 85% liked mangoes and 75% liked both. But 45 people
liked none of them. By drawing a Venn diagram, find the
number of people who were in the survey.
(Ans: 450)​

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

With this problem-elena cycled to school. find the distance travelled by elena if her bicycle wheels rotated 840 times and the radius is 0.25 m.