Answer:
(C) 18
Step-by-step explanation:
We can create a systems of equations. Assuming is Michelle's age, is Joan's age, and is Ryan's age, the equations are:
We can use substitution, since we know the "values" of m and j.
So we know that Joan is 18 years old.
Hope this helped!
The answer
we know that V = d / t, V is the speed
<span>so d= Vx t, so the constant of proportionality is V=20
so we have as direct proportion equation d= 20t</span>
Using the z-distribution, the p-value would be given as follows:
b) 0.0086.
<h3>What are the hypothesis tested?</h3>
At the null hypothesis we test if the means are equal, hence:
At the alternative hypothesis, it is tested if they are different, hence:
<h3>What are the mean and the standard error for the distribution of differences?</h3>
For each sample, they are given as follows:
Hence, for the distribution of differences, they are given by:
- .
<h3>What is the test statistic?</h3>
The test statistic is given by:
In which is the value tested at the null hypothesis.
Hence:
z = -2.63.
Using a z-distribution calculator, for a two-tailed test, with z = -2.63, the p-value is of 0.0086.
Hence option B is correct.
More can be learned about the z-distribution at brainly.com/question/13873630
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48 feet of fabric = 8 blankets
6 feet of fabric = 1 blanket
12 feet of fabric = 2 blankets
By using the theorem,
"If the diagonals of a quadrilateral bisect each other and have the same length, then the quadrilateral is a rectangle."
By the rectangle the opposite sides are equal and and the opposite angles are congruent.
Thus the Quadrilateral ABCD has all congruent sides and opposite angles that are congruent is given by Rectangle.