Answer:
the answer is A and D
Step-by-step explanation:
False because descriptive statistics doesn't make any prediction, but inferential statistics make predictions about a population based on a sample of data taken from the population.
Descriptive statistics are informational coefficients that summarize a given data set, but they can't make predictions about the population based on a sample of data for the example is chart or graph.
It has differences from Inferential statistics which allow you to test a hypothesis or prediction from the data. The prediction is made by collecting the sample of data which is taken from the population such as calculating the z-score or ANOVA test.
Find out more on descriptive statistics at: brainly.com/question/6990681
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We are have a system of equations with 2 variables, x and y
Equation 1: -3x-3y = 3
Equation 2: y = -5x-17
For equation 1, the y is by itself on one side of the equation, so it is really easily to substitute it into equation 2. In general, to solve for system of equations, you either do elimination or substitution. You just have to find which is easier for this situation.
By substituting y for -5x-17 in equation 1, there is only 1 variable which we can solve for.
-3x-(-5x-17) = 3
Distribute negative sign to (-5x-17) Avoid the common error of forgetting!
-3x+5x+17 = 3
Combine like terms- same variables are like terms (ex. 4x and 29x) and all constants are like terms (ex. 7 and 189 )
2x+17 = 3
Subtract 17 from both sides so all the variables are on one side and the constants on the other
2x = -14
Divide both sides by 2 to isolate the x
x = -7
We now know that x = -7 so we need to plug it into an equation to solve for y
Equation 2: y = -5x-17
y = -5 (-7) -17
y = 18
Now we know that x = -7 and y = 8
We can write it as (-7, 8)
- √9 = ?
-√3² = ?, but √3² = 3 and since there is a" - " before the radical, then the
answer is - 3
Question
Combine like terms to simplify the expression: -5.55 - 8.55c + 4.35c
Answer:
Step-by-step explanation:
Given: -5.55 - 8.55c + 4.35c
Required: Simplify
We start by performing arithmetic operation on like terms
-5.55 - 8.55c + 4.35c becomes
-5.55 + 4.20c
Then we simplify further by converting decimals to fraction
Simplify by dividing the numerator and denominator by 5
Bring out similar factors
Rearrange
Hence, the expression -5.55 - 8.55c + 4.35c is equivalent to