<span>This is a 25% discount.
</span>
We can restate this problem as:
$13 is what percent of $52?
First, let's call the percent we are looking for "p" or <span>p%</span>.
"Percent" or "%" means "out of 100" or "per 100", Therefore p% can be written as <span>p100</span>.
When dealing with percents the word "of" means "times" or "to multiply".
Putting this all together we can write this equation and solve for p while keeping the equation balanced:
<span>$13=<span>p100</span>×$52</span>
<span>$13=<span><span>$52p</span>100</span></span>
<span>$13×<span>100<span>$52</span></span>=<span><span>$52p</span>100</span>×<span>100<span>$52</span></span></span>
<span><span><span>$1300</span><span>$52</span></span>=<span><span>$52p</span>100</span>×<span>100<span>$52</span></span></span>
<span><span><span>$1300</span><span>$52</span></span>=<span><span><span>$52</span>p</span>100</span>×<span>100<span>$52</span></span></span>
<span><span>130052</span>=<span>p</span></span>
<span>25=p</span>
answer
240 standard versions
set up equations
s = number of standard versions
h = number of high quality versions
the total size of all standard versions would be 2.3s since each standard version is 2.3 MB
the total size of all high quality versions would be 4.4h since each standard version is 4.4 MB
add them together to get the total size (2664 MB) of all versions
2664 = 2.3s + 4.4h
since the high quality version was downloaded twice as often as the standard, we can say that
h = 2s
substitute h into equation and solve
2664 = 2.3s + 4.4h
h = 2s
2664 = 2.3s + 4.4(2s)
2664 = 2.3s + 8.8s
2664 = 11.1s
s = 2664/11.1
s = 240
Answer:
x=125
Step-by-step explanation:
Answer:
= 49
Answer.
Step-by-step explanation:
Solution:-
Length of the road = 5 miles
Distance between every two streetlights = 1/10 miles
Total number of streetlights placed on the new road = 5 ÷ 1/10
= 5*10
= 50 streetlights
As there is already a streetlight at the beginning of the new road, so the number streetlights will be = 50 - 1
Answer:
The probability is 0.026 to 3 d.p
Step-by-step explanation:
To calculate this , we shall be using the Bernoulli approximation.
let P = percentage of voters supporting the increase = 41% = 41/100 = 0.41
q = percentage of voters not supporting = 100-41% = 59% = 59/100 = 0.59
Now we want to calculate that exactly 15 out of 25 will vote in favor
Mathematically that would be ;
25C15 p^15 q^10
= 25C15 0.41^15 0.59^10
= 0.025981307443 or simply 0.026 to 3 decimal places