Right angle (angle p) = 90°
supplementary means total equals 180°
so 90° + q = 180°
subtract 90° from both sides
q = 90°
Answer:
First, the dropdown is 9. Second, put in 9. The answer is 81.
Step-by-step explanation:
10* what equals 90? Well, let's do 90/10, our answer is 9. Then We are given 1 nine or 9 to put on the second slot. Our answer would be 90-9, or 81. Khan Academy is teaching you how to multiply.
Looking at the number 2800, ask yourself, what 2 factors can ibreak this number into.
One possibility is 28 and 100-- since 28*100 = 2800
so now you have 28 and 100, are any of these prime?
the answer is no
28 can be factored into 4 and 7 and 100 can be factored into 10 and 10
so now you have
4,7,10,10
which ones of these are prime?
well, 7 is a prime number but 4,10, and 10 are not. Since they are all even, then they can be divided by 2
4 = 2*2
10=2*5
so factoring those numbers give you
2,2,7,2,5,2,5
putting them in order,
2,2,2,2,5,5,7
now, the question is, are these numbers all prime.
if yes, then you're done with prime factorization, if not, then you just continue the process
Answer:
A∩B={}
B is a proper subset of A:
B⊂A
Step-by-step explanation:
A∩B means the intersection of the set A and the set B. In other words, is the set of elements contained in these both sets.
Given the set A and the set B:
{}
{}
You can indentify that the numbers common in both sets are: 25,45 and 65.
Therefore you get:
A∩B={}
Since all elements of B are in A, and A contains elements that are not in B, then B is a proper subset of A:
B⊂A