There are 5 row and 8 tiles in each row calculated using two equation.
Simultaneous equations, system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods to solving systems of equations: graphing, substitution, elimination and matrices.
Given I am an array made with 40 tiles I have an odd number of rows and an even number of tiles in each of my rows the number of my rows plus the number of tiles in each of my rows equals 13
Let "r" be the number of row and "t" be the number of tiles in each row.
Since, array has total 40 tiles
Thus,
r * t = 40
Also given
r +t = 13
From comparing these equation
r = 5 or 8
Since row is odd given
thus, r = 5
and t = 8
therefore, Two equations are used to determine the five rows and eight tiles in each row.
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1 5/6 x 2
22/6 is the result of the product of the expression.
To rewrite the multiplication problem using improper fractions, we need to convert the mixed number 1 5/6 to an improper fraction.
1 5/6 = 11/6
Now, the multiplication problem can be expressed as:
1 5/6 x 2= 11/6 x 2
1 5/6 x 2 = 22/6
Therefore, the multiplication problem, using improper fractions, is 22/6
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Picture on bottom
that correspond to 80 % degree of confidence and the sample size
n=15.
χ2L= χ L 2 =
χ2R= χ R 2 =
Answer: this is very hard and i was wondering if there is more info
Step-by-step explanation:
The critical values for a Chi-square distribution with 80% confidence level and sample size of 15 (thus 14 degrees of freedom) are: χ2L = 18.475 and χ2R = 8.897.
The question is asking for the critical values for a Chi-square distribution which can be found using Chi-square tables usually found in statistics textbooks or online. The critical values refer to the boundary values for the acceptance region of a hypothesis test.
When trying to find the critical values for an 80% confidence level with 14 degrees of freedom (since degrees of freedom = n - 1 for sample, thus 15 - 1 = 14), you need the 90th percentile for the χ2L and the 10th percentile for the χ2R (since α = 20%, then α/2 = 10%).
Using a Chi-square table for these percentiles, we get:
χ2L = 18.475
χ2R = 8.897
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Mr. Jackson wants to build a pool in his backyard. He plans to put a safety fence around the rectangular pool area that has an area of 400 square feet. He wants to use as little fence material as possible.
What are the dimensions Mr. Jackson should use for his rectangular pool area?
A.
Make a list.
Create a list of all possible whole-number combinations of length and width that would equal an area of 400 square feet. Then start calculating the perimeter of each rectangle. Look for a pattern to decrease the number of calculations you have to make.
B.
Write a number sentence.
Use a number sentence to calculate the area of a rectangle. Use guess and check to find two numbers that when multiplied will give a product of 400.
C.
Use objects.
Arrange 400 square tiles in different patterns until you get a rectangular shape. Count the number of tiles on the perimeter of the shape.