Answer:
x =5 ±sqrt( 31)
Step-by-step explanation:
x² + 10x = 6
b = 10
Take b/2 and square it
(10/2) = 5 5^2 = 25
Add 25 to each side
x² + 10x+25 = 6+25
The left side will be (x+b/2)^2
(x+5)^2 = 31
Take the square root of each side
sqrt((x+5)^2) = ±sqrt( 31)
x+5 = ±sqrt( 31)
Subtract 5 from each side
x+5-5 = -5 ±sqrt( 31)
x =5 ±sqrt( 31)
Answer: kindly check explanation
Step-by-step explanation:
Given the following statements :
A.) To find 49 times 73. I multiply 73 times 50 and take off one group of 73
To obtain the product of (49 and 73)
(73 * 50) - 73
3650 - 73
= 3577
B.) To find 15 times 16, I double 15 and halve 16 and then multiply
Double 15 = (15 * 2) = 30
Halve 16 = (16 / 2) = 8 ;
Then multiply:
(30 * 8) = 240
Similarly ;
(15 × 2) × (16 / 2) = 240
Answer:
A significant correlation means that there is a significant (in a statistical point of view) correlation between two things.
Then a significant correlation means that we have a (measurable) correlation between the variables in our experiment.
Now, the factors are the variables that experimenters control during an experiment in order to determine their effect on the response variable, then having a positive correlation between two factors, means that when we change one, the other is also affected by the change in the first one.
Then the statement is true.
Answer: D
Step-by-step explanation:
A system with the same slope, but different y-intercepts is parallel lines