Answer:
2x-2
Step-by-step explanation:
Answer:



Step-by-step explanation:
Given
See attachment for cumulative frequency histogram
Solving (a): Swimmers between 200yd and 249yd
To do this, we simply read the data from the 0 mark
From the histogram, we have:

and

So:

This gives:


Solving (b): Swimmers between 150yd and 199yd
To do this, we simply read the data from the 0 mark
From the histogram, we have:

and

So:

This gives:


Solving (c): Total swimmers
To do this, we simply read the longest bar of the histogram

Hence:

Answer:
49
Step-by-step explanation:
devaughn= x+15
sydney= x
set an equation adding both their ages
x+x+15=113
2x+15=113
subtract 15 from both sides
2x=98
x=49
sydney is 49
Answer:
3, 150
Step-by-step explanation:
150 is the correct answer
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