Answer:
8=8
Step-by-step explanation:
jgvbhytrjhfr5tfhtftvygftvggfgfgvgbfyt
Answer:
Stratified sampling
Step-by-step explanation:
The is a type of sampling in which the population of interest is divided into subpopulations and then each subpopulation is randomly sampled.
In this case study, instead of just doing a random sampling of all students, the research divided the population of all students into subpopulations which includes freshmen, sophomores, juniors and seniors and then she makes a random sampling of each of these subpopulations.
<h2>
Explanation:</h2>
We have the following system of three linear equations:
Let's use elimination method in order to get the solution of this system of equation, so let's solve this step by step.
Step 1: Multiply first equation by 
and add the result to the second equation. So we get:
Step 2: Multiply first equation by −2 and add the result to the third equation. So we get:
Step 3: Multiply second equation by −32 and add the result to the third equation. So we get:
Step 4: solve for z.
Step 5: solve for y.
Step 6: solve for x by substituting 
and 
into the first equation:
Finally:
<h2>Learn more:</h2>
Solving System of Equations: brainly.com/question/13121177
#LearnWithBrainly
Answer:
Step-by-step explanation:
Guess and Check:
$80.00*15=$1,200
$165.00*10=$1,650
$1,200+$1,650=$2,850.
15 of the pairs of shoes are Jordans, while 10 of the pairs are Adidas.
Answer:
She rode her bike 20 miles... I believe this may be a trick question.
Step-by-step explanation:
Let's break down this problem...
If she is going at a rate of 5 miles per hour while walking than the maximum she could have walked in 5 hours is 25 miles.
If Angela rode her bike for 20 miles, and the got off her bike and walked "<em>the rest of the way</em>" then she should have walked 50 miles. However as we already know her rate is 5 miles per hour while walking, and therefore could only have covered half that distance in 5 hours.
Is this a multiple choice question? Is there any misssing informaation?
