Answer: D- 97.4
Step-by-step explanation:
For the scale factor of 1:3. Use ratio and proportion to solve for the area of the triangle.
area of triangle RST/ area of triangle XYZ = (1/3)^2
where
area of traianlge RST = 10.825 inch^2
Area of triangle XYZ= Area of triangle RST x (3)^2
Substitute the given values=97.4 inch^2
Answer:
136
Step-by-step explanation:
h(x)=4(5x-1)
substitute 7 for x
h(7)=4(5(7)-1)
*****Remember PEMDAS*****
=4(35-1)
=4(34)
h(7)=136
<h3><u>Explanation</u></h3>
A function is a set of relation without repetitive domain. That means we cannot have the same value of x in a set.
<u>Example</u>
{(1,1),(1,2),(2,4),(3,9)}
This is not a function because the relation has same two x = 1 which does not make it a function.
{(1,1),(2,4),(3,9)}
This is a function because there are no same x-values or repetitive domain in a single set.
Back to the question, we can find which table represent a function by looking at the x-value table. If there are two same or more x-values, it is not a function.
<h3>
<u>Answer</u></h3>
The answer is the left bottom table as the other table have two same x-values.
54.029 is your answer.
Hope this helps!
Answer: B) [-0.0332,0.1332]
Step-by-step explanation: <u>Confidence</u> <u>Interval</u> is an interval where we can be a percentage sure the true mean is.
The confidence interval for a difference in population proportion is calculated following these steps:
First, let's find population proportion for each population:
Second, calculate standard deviation for each proportion:
Now, we calculate standard error for difference:
SE = 0.0505
The z-score for a 90% CI is 1.645.
Then, confidence interval is
± z-score.SE
±
0.05 ± 0.0831
The limits of this interval are:
inferior: 0.05 - 0.0831 =
superior: 0.05 + 0.0831 = 0.1332
The 90% confidence interval for the difference in the population proportion of pit pulls and golden retrievers is .