Math question please show how you got the answer!?

Question

Okay here it is

After finishing with her dad Caitlyn noticed she could see traffic crossing a bridge on the other side of the lake she kept count of the pickup trucks that crossed the bridge out of the 18 trucks she counted 17 camper shells 8 had cb antennas and 7 had both How many trucks had camper shells and antennas Hint use a Venn diagram

SEE HELP AND after you show me how can you also show me wuts a Venn diagram PLEASE HELP!!

Answer 1

10 trucks have camper shells only. 1 truck has cb only. 7 have both.

research the web for venn diagram. it's difficult to illustrate here.:D

Answer 2

From Wikipedia, the free encyclopedia



A Venn diagram of sets A, B, and CVenn diagrams or set diagrams are diagrams that show all hypothetically possible logical relations between a finite collection of sets (groups of things). Venn diagrams were invented around 1880 by John Venn. They are used in many fields, including set theory, probability, logic, statistics, and computer science.

Answer 3

So there were eighteen trucks;of these 1 truck carried one camper shell as well as one CB antenna.There were 10 trucks each of which carried a camper shell alone;7 trucks each of which carried a CB antenna alone.This Venn diagram shall be made with rectangles,The big rectangle ABCD(AB=CD =18 ;BC =AD=1) will represent the 18 trucks.There will be a  square GEFH within ABCD with side GE and HF parallel to AB or CD. Length GE =  HF =1 and length GH = EF = 1 This square within ABCD will represent a single truck carrying one camper shell and one CB antenna as well.AEFD represents 17 trucks having at least one camper shell.GBCH will represent 8 trucks carrying at least one CB antenna.

Answer 4

Yes u have mentioned in the question itself that it is 18 trucks.. is right.. bcz n(AUB)=n(A)+n(B)-n(A^B)   ^ MEANS INTERSECTION

ao 18=17+8-7... total trucks r 18... got it...

Answer 5

n(A U B) = n(A) + n(B) - n(A ^ B)

18 = 17 + 8  - 7

17 - 7 = 10 (camper shells)

8 - 7 = 1 (antennas)