Answer: -1 1/7
Explanation: Dividing two fractions is the same as multiplying the first fraction by the reciprocal (inverse) of the second fraction.
Take the reciprocal of the second fraction by flipping the numerator and denominator and changing the operation to multiplication. Then the equation becomes. This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 24 and 21 using 24÷321÷3=8/7. The fraction is the same as 8÷7. Therefore: 3/7÷3/8=1 1/7
Answer:
D
Step-by-step explanation:
In this question we are asked to pick the correct option that clearly states what statisticians use linear regression for.
To answer this question, I shall be considering the validity of the options one after the other.
But before that , what is a linear regression model?
A linear regression model employs a linear plot to explain the relationship between a dependent variable and another variable called the independent variable.
Option a is wrong.
A regression model does not say if the dependent and independent variables match
Option B is wrong
A linear regression model cannot be used to predict the value of an unknown dependent variable from the unknown Independent variables. X is the independent here with y the dependent
Option C is wrong
Since Y scores is known, then what are we predicting again?
Option. D is correct
We predict values of the unknown dependent variable y from the known independent variable x
Answer:
y = -3x - 5
Step-by-step explanation:
-2y = 6x + 10
divide both sides by -2
y = -3x - 5
Answer:
You are correct
Step-by-step explanation:
-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5