Answer:
Jiri is 12 years old
Step-by-step explanation:
To start off we need to make an equation. Since we know both of their ages add up to 48 and that Pamela's age is 3 times Jiri's age we can say x(Jiri's Age) + 3x(Pamela's age) =48 --> x+3x=48
Now we have the equation x+3x=48, and we need to solve it.
First combine like terms
4x=48
Now divide both sides by 4
x=12
And now since we are using Jiri's age as x we know Jiri is 12 years old.
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Answer:
10
Step-by-step explanation:
1. 3 x 6 = 18
2. 2 x 4 = 8
3. 18 - 8 = 10
<em>A. </em>10
Answer:
decimal form 9.7
mixed number 9 7/10
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
(a)
The median is represented by the solid vertical line inside the box, that is
median = 58
(b)
The interquartile range is the difference between the upper and lower quartiles.
The upper quartile is the value on the right side of the box, that is 72
The lower quartile is the value on the left side of the box, that is 34
Interquartile range = 72 - 34 = 38
(c)
The range is the difference between the maximum and minimum values
The maximum is indicated by the vertical bar on the right outside the box
The minimum is indicated by the vertical bar on the left outside the box
Range = 86 - 10 = 76