Letty answered 15 out of 20 questions correctly on her history quiz. What is her grade as a percent?
50%
25%
O 100%
75%

75%

Step-by-step explanation:

One way to find this out is to divide 15 by 20

15/20 can be simplified into 0.75.

Another example:

Let's say a student does absolutely horrendus on the test, and gets only 4 questions correct out of 20. You can do 4/20 which is 0.2 in decimal form. (You can use a calculator.) This means that in this example, this student got a 20% on the test.

< 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⭐