Answer:
+4
Step-by-step explanation:
-5 - (-9)
-5 + 9
4
96 = 2 x 2 x 2 x 2 x 2 x 3 or 2⁵ x 3.
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:

Step-by-step explanation:
Given



Required
Find x
First, we calculate the amount paid in terms of the cost price.
This is calculated using:



Express as decimal

Open bracket

So, we have:
and
---- given
Equate both

Collect like terms



Solve for x

