Please help me !! im really confused abt this whole unit

a. 70

b. 45

c. 50

Step-by-step explanation:

sum of the all angles is 360

angle of straight line is 180

Step-by-step explanation:

angle b+45 degree=110 degree (because they are vertically opposite angle and vertically opposite angle are always equal)

angle b=110-45

angle b=65 degree

angle a + angle b + 45 degree = 180 degree (being linear pair)

angle a + 65 + 45 =180

angle a + 110=180

angle a=180-110

angle a=70 degree

angle c + 20 degree=angle a (because they are vertically opposite angle and vertically opposite angle are always equal)

angle c + 20 = 70

angle c = 70 - 20

angle c =50 degree

Note: A linear pair is a pair of adjacent angles formed when two lines intersect.

Hope this helps u !!

answer:

what is your question that you ask

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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