Once your friend has thought of a number, do the following:
1. Ask him or her to multiply the chosen number by 2.
2.Choose an even number to use yourself. Ask your friend to add this number to the one in his head.
3.Tell him/her to divide the new number by 2.
4.Tell your friend to subtract his original number from the equation.
5."Guess" the number.
:)
Answer:
-1
Step-by-step explanation:
15x-8x-2=-9
Or, 7x=-9+2
Or, 7x=-7
Or, x=-7/7
Or, x =-1
First we have to find the pattern: 16-4=12, 36-16=20, 64-36=28, 100-64=36
We see in the pattern the next number is increased by 8. (20-12=8, 28-20=8, etc) So the next number would be 36+8=44 and then we add that to the last number of the sequence: 100+44=144
next number would be 44 +8 =52, 144 +52 = 196
3rd number would be 52+8=60, 196 +60 = 256
so next 3 numbers are 144, 196, 256
Answer:
see below
Step-by-step explanation:
The graph will cross the x-axis at x=a when (x-a) is a factor of the polynomial. Here, the graph crosses at x=-2, 1, and 3, so factors of the polynomial are ...
The graph has a flat spot at x=1, but crosses the axis there, so the multiplicity of that factor will be an odd number greater than 1. (Odd, because the sign of the function changes there. Greater than 1 because the slope is zero there.)
The only answer choice that matches these requirements is the factorization ...
(x +2)(x -1)³(x -3)