4/8, 5/10, 10/20/ and 2/4
It's just half of it, like half of 20=10
and half of 8=4
2,000
10,000 divided by 5 = 2,000
Answer:
1.
a = 112
b = 68
c = 68
2.
a = 127
3.
a=35
b=40
c=35
d=70
4.
a= 30
b=70
c = 30
d=70
e = 130
I'll help you with the rest later
Step-by-step explanation:
a = 112 because of allied angles rule
b and c = 68 because of angles at a point
360-112-112 ÷2
2. a = 127 because of angles on a straight line rule.
180-38-15
3. d= 70, vertically opposite angle
using angles on a straight line, 180 - 70 - 40 ÷ 2
we now have the two angles and because they are vertically opposite a and c = 35
b = 40 because of vertically opposite angles
4. a=30 because 90-70
since a=30, take 90 - 30 to get b, 70
d= 70, vertically opposite angles
e = 130 because a+b+c, vertically opposite angles
She can choose three books in 54 ways
What is permutation?
Permutation is a technique involving in which a set or number of things can be ordered or arranged. We use permutation to solve and compute answers
We are given that, Josephine has three chemistry books, three history books, and nine statistics books
She has to choose one from each subject
Firstly She has 3 chemistry books
This can be selected in 3 ways
Then She has 3 history books
This can be selected in 3 ways
Ans finally she has 9 statistics books
This can be selected in 9 ways
Hence total ways in which she can select 3 books is 3*3*9= 54 ways
Hence in 54 ways she can choose three books
To learn more about permutation please refer
brainly.com/question/1216161
#SPJ4
101
Step by step explanation:
U just add all the books he read together
