Answer: Statistics laws are true on average. Statistics are aggregates of facts, so a single observation is not a statistic. Statistics deal with groups and aggregates only.
Step-by-step explanation:
Answer:
(2, )
Step-by-step explanation:
Given the 2 equations
2x + 3y = 17 → (1)
3y = 15 - x → (2)
Substitute 3y = 15 - x into (1)
2x + 15 - x = 17, that is
x + 15 = 17 ( subtract 15 from both sides )
x = 2
Substitute x = 2 into either of the 2 equations for corresponding value of y
Substituting in (1)
2(2) + 3y = 17
4 + 3y = 17 ( subtract 4 from both sides )
3y = 13 ( divide both sides by 3 )
y =
Solution is (2, )
$220.5 is the answer.
= 70(1+2.15)=70×3.15=220.5
Answer:
Step-by-step explanation:
Let x represent the cost of one adult tickets to space city amusement park.
Let y represent the cost of one child tickets to space city amusement park.
The henson family bought 3 adult and 1 child for 163$. This means that
3x + y = 163 - - - - - - - - - - - - 1
The garcia family bought 2 adult and 3 child for 174$. This means that
2x + 3y = 174 - - - - - - - - - -2
Multiplying equation 1 by 2 and equation 2 by 3, it becomes
6x + 2y = 326
6x + 9y = 522
Subtracting, it becomes
- 7y = - 196
y = - 196/- 7 = $28
Substituting y = 28 into equation 1, it becomes
3x + 28 = 163
3x = 163 - 28 = 135
x = 135/2 = $45
Answer:
graph 3 graph 1 graph 2 graph 4