Answer:
85
Step-by-step explanation:
Write the numbers in order
66, 72, 74, 80, 83, 87, 91, 95, 98, 99
Find the middle number
83 and 87 are in the middle, so find the mean of them. 83+87= 170
170/2 = 85.
Answer:
Option B. 
Step-by-step explanation:
we know that
The frequency is equal to the number of cycles divided by the time
Remember that
1 cycle = 1 full wave to repeat itself
In this problem
From o to 12 seconds ------> there are 2 cycles
therefore
The frequency is equal to

Answer:
120%
Convert fraction (ratio) 30 / 25 Answer: 120%
The simplified form of the equation is
.
<h2>
Given that</h2>
Equation; 
<h3>
We have to determine</h3>
The simplified form of the equation;
<h3>According to the question</h3>
To determine the simplified form of the equation following all the steps given below.
Equation; 
<h3>
To simplify the equation multiple the terms and solve.</h3>
Then,
The simplified form of the equation is,

Hence, The simplified form of the equation is
.
To know more about Equation click the link given below.
brainly.com/question/26252222
Sales tax is:
$178.90* (5.75/100)=$10.29
The sales tax of the chair is $10.29~