9514 1404 393
Answer:
x = 4
Step-by-step explanation:
The figure is a rhombus when the sides are the same length.
21 -x = 2x +9
12 = 3x . . . . . . . . add x-9 to both sides
4 = x . . . . . . . . . . divide by 3
1953-1944=9 years (that's the years)
9 months between them
thus she was 9 years and 9 months
Answer:
Option D
Step-by-step explanation:
When we study about relationship between two or more variables we sometimes ignore factors which affect the relationship other than these two variables. These are also called extraneous variables or lurking variables. These affect the relationship very much.
Thus we find that out of 4 options given, Option I is incorrect because lurking variables need not be equal to almost 0.
Option B is incorrect because these need not have an infinite possible values.
Option C is a lurking variable need not be a response variable alone normally this would be an explanatory variable
Option D is right
A lurking variable is an explanatory variable that was not considered in a study, but that affects the value of the response variable in the study. In addition, lurking variables are typically related to explanatory variables in the study.
Let us start with the time it takes for 1 gallon of gas to be dispensed. If ½ gallon takes 3 ¼ seconds, it will take double of that time for one gallon of gas. Double of 3 <span>¼</span> seconds is 6 1/8 seconds. Unit rate is 1 gallon of gas at every 6 1/8 seconds If one gallon of gas takes 6 1/8 seconds, 50 gallons will take 50 x 6 1/8 seconds. That is, 325 seconds or 5 minutes ans and 25 seconds.
You started with nothing: 0
He gave you 8: +8
You spend 6: -6
He gave you 5 more: +5
0 + 8 - 6 + 5 = 7 dollars left to spend.