Answer:

Step-by-step explanation:
Assuming that you tried to write:

we can multiply the 4 on the outside of the parenthesis to all the terms. Multiplying, we get

Because you don't want any negative powers in the top, we can move it down to get:

Answer:
(a) Null hypothesis: The new drug reduces the rate of first heart attacks by a percentage same as aspirin.
(b) Alternate hypothesis: The new drug reduces the rate of first heart attacks by a percentage greater than aspirin.
Step-by-step explanation:
(a) A null hypothesis is a statement from the population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.
(b) An alternate hypothesis is also a statement from the population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.
Answer:
x = 14 inches
Step-by-step explanation:
The area of a square piece of paper is 200 square inches.
We need to find the point on the number line below represents the measurement closest to the side length of the piece of wrapping paper. It is shown in the attached figure.
Area of a square = x², x is the side length

or
x = 14 inches
So, the side length of the square is 14 inches. It is shown in point A.
Answer:
w = 9
Step-by-step explanation:
9-10 = -1
6+-1 = 5.