Let
x-------> the number of fiction books
y-------> the number of nonfiction books.
we know that
-----> equation ![1](https://tex.z-dn.net/?f=%201%20)
-----> equation ![2](https://tex.z-dn.net/?f=%202%20)
Add equation
and equation ![2](https://tex.z-dn.net/?f=%202%20)
<u>find the value of y</u>
![x+y=26](https://tex.z-dn.net/?f=%20x%2By%3D26%20)
![19+y=26](https://tex.z-dn.net/?f=%2019%2By%3D26%20)
![y=26-19=7\ nonfiction\ books](https://tex.z-dn.net/?f=%20y%3D26-19%3D7%5C%20nonfiction%5C%20books%20)
therefore
<u>the answer is</u>
Part a) the number of fiction books is ![19\ fiction\ books](https://tex.z-dn.net/?f=%2019%5C%20fiction%5C%20books%20)
Part b) the number of nonfiction books is ![7\ nonfiction\ books](https://tex.z-dn.net/?f=%207%5C%20nonfiction%5C%20books%20)
Solution: The statement is false, but the converse is true.
Answer:
<em>If a whole number is even, then the number is divisible by 4</em>.
This statement is false because there are even numbers smaller than 4 that are not divisible by 4.
The converse of the statement is <em>If a number is divisible by 4, then the number is even</em>.
This statement is true because all multiples of 4 are even.
If two planes intersect there’s alway going to be an intersection point where the two cross over
Answer:
525.6 ft^3 based on a Height of 9 ft
Step-by-step explanation:
Given data
Area of Base= 58.4 ft^2
The expression for the volume of a rectangular tank is given as
Volume= L*W*H
Volume= Area*Height
Although the question was not specific about the height, it is important that we have the height to get the volume
Say the height is 9 ft
Hence the volume is
V= 6*58.4*9
V= 525.6 ft^3
Answer:
A. A stratified random sample is a combination of simple random samples selected from each of several strata.
Step-by-step explanation:
In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.
There are various types of sampling used by researchers and these are;
1. Random sampling.
2. Convenience sampling.
3. Systematic sampling.
4. Cluster sampling.
5. Stratified sampling.
Stratified random sampling can be defined as a method of sampling that involves dividing a population into smaller groups known as strata.
In stratified random sampling, the strata are formed based on member's shared characteristics (e.g female or male, occupation, education) or attribute (e.g black or white).
<em>Hence, the statement about stratified random sampling which is true is that, a stratified random sample is a combination of simple random samples selected from each of several strata. </em>