Answer:
2x + 4
Step-by-step explanation:
Let R = Ralph's age
and x = Sarah's age
Then Ralph's age in 4 years = R + 4
and Sarah's age in four years = x + 4
Thus, R + 4 = 2(x + 4)
Distribute the 2 R + 4 = 2x + 8
Subtract 4 from each side R = 2x + 4
Ralph's age is 2x + 4.
Question A is asking: Considering the distribution shape (i.e skewed left, right, or symmetrical), what measure of center would be used? Explain why that measure of center would be used.
Question B is asking: What measure of variability (or change, i.e range, interquartile range, or standard deviation) would be used for this graph? Explain why this measure would be used.
Answer:
55
Step-by-step explanation:
Answer:
y = (-5/3)x + 4
Step-by-step explanation:
Line contains (-3, 9) and (3, -1)
slope A = Δy/Δx = (-1 - 9) / (3 - (-3)) = -10 / 6 = -5/3
y = (-5/3)x + B
find the intercept B by plugging in either known point set.
9 = (-5/3)(-3) + B
9 = 5 + B
B = 4
Answer:
Step-by-step explanation:
- Total money = $96
- Contribution ratio = 3 : 5 : 8
<u>Contribution by each:</u>
- 3x + 5x + 8x = 96
- 16x = 96
- x = 6
- 3x → $18, 5x → $30, 8x → $48
<u>Equal contribution is:</u>
<u>Returned by first and second person:</u>
- $32 - $18 = $14
- $32 - $30 = $2
<u>Ratio of returned amount:</u>
