Answer:
x=9
Step-by-step explanation:
Since ABCD is a square, we know that AC bisects ∠BCD(=90), and therefore ∠ACB=45.
8x-27=45
8x=72
x=9
Answer:
1
Step-by-step explanation:
440??
300+(14 tens=140) 140= 440
Answer:
6
Step-by-step explanation:
-The different ways of two head and two tails in 4 tosses can be determined by drawing the sample space:
-The sample space of the four tosses is as above. Hence, they are 6 different ways to get 2 heads and 2 tails.