A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number?
A: -30
B: -4
C: 4
D: 30

(No shown work is needed)

C: 4

Step-by-step explanation:

when a positive and negative number are multiplied you will get a negative number.

So,

4-7= -3

-3x3= -9

Therefore, your answer is C: 4. Hope this helps! :)

the answer for this question is 38

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐