Answer:
10⁴
Step-by-step explanation:
10 is repeated 4 times, so your exponent would be 4 with a base of 10.
<span># of books = 4 ; original cost = 4*9=36; savings = 0.10*36= 3.60
</span>
<span># of books = 2 ;original cost = 2*20=40; savings = 0.20*40= 8.00
</span>
<span>Percent savings:
original total cost=$76
Total savings = $11.60
Percent savings: 11.60/76 = 0.1526..= 15.26%</span>
Answer:
the answer is 60%
Step-by-step explanation:
1520-950/950 x 100
570/950 x 100 = 60%
Answer:
a) 4.60 (2 dp)
b) 1.31 (2 dp)
c) 8.8
Step-by-step explanation:
The "Frequency" part of a frequency table is the measure of how often the data value occurs.
To calculate the mean of data presented in a frequency table, we need to multiply each data value by its given frequency, sum these, then divide by the sum of the frequency.
The formula for mean is:
<h3><u>Part (a)</u></h3>
Add a row showing the values of
Add a column showing the totals of and
Now use the formula to calculate the mean:
<h3><u>Part (b)</u></h3>
Add a column showing the values of
Add a row showing the totals of and
Now use the formula to calculate the mean:
<h3><u>Part (c)</u></h3>
Add a column showing the values of
Add a row showing the totals of and
Now use the formula to calculate the mean:
let's say the breakfast price was "x", so that's the 100%, and we know she gave 20% of that and that is 1.80.
so, 1.80 is 20%, and "x" is the 100%, what is "x"?