Answer:

Step-by-step explanation:
Given equation,

Step 1 : Using distributive of equality,

Step 2 : simplify,

Step 3 : Using subtraction property of equality,

Step 4 : Simplify,

Step 5 : Using division property of equality,

Answer:
Step-by-step explanation:
x is the geometric mean because it is a part of both the small triangle on the left (with base 81) and the whole triangle (with base 225). Setting up the geometric means formula:
and cross multiply to get
so
x =
and
x = 135
Two conditions under which we can assume that the sample means follow a normal distribution are as follows:
1). If the sample size is large enough, n greater than or equals 30, the sampling distribution is approximately normal regardless of the shape of the population.
2). In order to be considered a normal distribution, a data set (when graphed) must follow a bell-shaped symmetrical curve centered around the mean.
To learn more about Normal Distributions visit:
brainly.com/question/4079902
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Answer:
11/10
Step-by-step explanation:
divide both the terms of 55 & 50 with 5: like this ⬇️
<h3>55/5 = 11</h3><h3>50/5 = 10 </h3>
put it in the fraction form: ⬇️
<h3> ans: 11/10 </h3>
I hope this information helps.
I think this is the answer. i havent done any math for a while.