The lines are reciprocal because they cross to form an X. Also 4/5 is the reciprocal of 5/4
Answer:
A) 4.5
Step-by-step explanation:
you can set up a ratio comparing AB/CB to (AB + BD)/5
3/2 = 3 + BD/5
cross-multiply to get 15 = 2(3 + BD)
15 = 6 + 2BD
9 = 2BD
9/2 = BD
Let's say there were 3 questions with four answer choices each. That would mean there were 4*4*4 = 16*4 = 64 different ways to answer.
Extend this example out to 19 questions instead of 3. You'll get
4^19 = 4*4*4*...*4*4 = 274,877,906,944
The last value is one big number (not four numbers)
The large number is the answer
note: 4^19 means we have 19 copies of '4' being multiplied together. The three dots mean "continue the pattern". On your paper, you should somehow indicate to your teacher that there are 19 copies of '4' being multiplied.
Answer:
a = 2x^3 and b = 3y^2
Step-by-step explanation:
The general form of binomial expression (a + b)^n
Given: (2x^3 + 3y^2)^7
Here we are asked to find the value of "a" and "b"
The value of a = 2x^3 and b = 3y^2
Answer: a = 2x^3 , b = 3y^2
Hope this will help you.
Thank you.
