8 boys, x girls, 4 pencils each, total number of pencils 52.
The equation can be 4(8+x) = 52
So lets solve:
4(8+x)=52
Divide 4 on both sides:
8 + x=52 / 4
8 + x = 13
Subtract on both sides:
x = 13 - 8
x = 5
There are 5 girls in the class.
Now lets solve to double check:
4(8+5)=52
4(13)=52
52 = 52
Yes!
This means that there are 5 girls in the class.
I hope this helps! :)
Scale factor is always (new/original)
so it depends which rectangle came first. if it started as large and was dilated to the smaller one, then the ratio is (.5/2.5) which simplifies to 1/5 or 0.2.
From the attachment
area = mean base x height
A = (14+8)/2 * 8 = 88 ft^2
Answer:
In repeated sampling, 95% of the intervals constructed would contain the population mean.
Answer:
Step-by-step explanation:
$15 x 12Mths = $180
2 x 20 = $40 carlo gets back
$300 + $180 = $480
$480 - 40 = $440 is what carlo will spend in one year
Saves $40 from getting $2 back every time he works out
