## anonymous one year ago plz help asap If A = {2, 4, 6, 8, 10} and B = {1, 2, 3, 4, 5}, find A Intersects with B. A. {2, 4} B. {1, 2, 3, 4, 5, 6, 8, 10} C. {7, 9} D. {1, 3, 5}

1. freckles

just identity the elements that are in BOTH A and B (what do they have in common; what elements)

2. anonymous

i dont understand it though i thought it was a but got it wrong

3. freckles

you thought it was what?

4. anonymous

A

5. freckles

that is right both A and B have 2 and 4 in common

6. anonymous

OH

7. anonymous

i must have clicked on the wrong one

8. freckles

$\cap \text{ is intersect } \\ \cup \text{ is union }$

9. freckles

you did see the first symbol right?

10. anonymous

oh

11. anonymous

can you help me some more

12. freckles

sure

13. anonymous

Select the pair of equations whose graphs are perpendicular. A. x + 6y = 8 y = 2x – 8 B. y = 2x – 7 x + 2y = 3 C. 2y = –3x + 5 2x + 3y = 4 D. 5x – 8y = 9 12x – 5y = 7

14. anonymous

idk how to find if there perpindiculer

15. anonymous

hello?

16. geerky42

Lines are perpendicular if $$m_1~m_2 = -1$$ (product of slopes of these lines has to be -1.)

17. geerky42

Let's take a look at A. What is slope of first equation? Second equation?

18. anonymous

idk i think 3

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