Plz answer
I will mark brainliest

Do the 12th and 13th one

Step-by-step explanation:

Important note about this question

The diagram above shows a lot of angles

There is corresponding angles which is called the F angles and corresponding angles are equal

There is also alternative angle which is called the Z angles and alternative angles are also equal.

There is also vertically opposite angles which are also equals

Sum of angle at a point is 360°

Sum of angle on a straight line is 180°

11. To get angle angle "a" is vertically opposite to the 55°

Then, a=55°

Sum of angle "a" and "d" form a supplementary angle

Then a+d=180

Then, d=180-a

d=180-55

d=125°

c and d also makes a supplementary angles

c+d=180

c=180-d

c=180-125

c=55°

Also, c and b form complimentary angle

Then c+b=180

b=180-c

b=180-55

b=125°

c=d=55°, a=b=125°

13. Simple interest is given as

S.I=PRT/100

Where,

S.I is simple interest

P is the principal

R is the rate in %

And T is the time in years

Given that

S.I=?

T=2years

R=6%

Amount =Rs 5000

Note, Amount = P+S.I

5000=P+S.I

Then make P subject of formula

P=5000-S.I

S.I=PRT/100

S.I=(5000-S.I)×6×2/100

Cross multiple by 100

100S.I=(5000-S.I)12

100S.I=60,000-12S.I

100S.I+12S.I=60,000

112S.I=60,000

S.I=60,000/112

S.I= Rs 535.714

Then, the simple interest is

Rs 535.7

that is not the correct spelling i don’t understand the question