Answer: 
Step-by-step explanation:
Once you take off the parenthesis, your sign should change from negative to positive.
The fractions now both have the same denominator. Thus, we can add the numerators.
Therefore, 
Answer:
the first one, 64(-1/2)^(n-1)
Step-by-step explanation:
To go from one number to the next, we first start with 64, so everything is multiplied by that. Next, 64 turns into -32, and (-32)/64 = -1/2. Similarly, 16/-32 is -1/2, and -8/16 is -1/2 as well. Therefore, we have to multiply each number by -1/2 a number of times. For example, to get from 64 to 16, we have to multiply 64 by negative one half 2 times. The only option with -1/2 in the multiplier is the first one, making that our answer
To find the area of a triangle, you have to multiply the height and the base length, and divide that by two.
In this question, the height is 3 square units and the base length is 4 square units.
Therefore, to find the area, you must multiply 3 by 4, which is 12, and then divide this by 2, which is 6.
So the area of this triangle is 6 square units.
Tip would be the best answer choice
Answer:
x+11 = 5x - 5
Step-by-step explanation:
x+
11
=
5
x
−
5
Subtract x from both sides
11
=
4
x−
5
Add 5 to both sides
16
=
4
x
Divide both sides by 4
x=4
