Answer:
<em>Peter now has 54 baseball cards</em>
Step-by-step explanation:
<u>Percentages</u>
Assume Peter had x baseball cards in his collection. The 35% of his initial collection is
35 * x / 100= 0.35x
We know that those 14 new baseball cards represent a 35% of his previous collection, therefore we can set a simple equation
0.35x=14
When we solve for x, we'll know how many baseball cards Peter had before
x=14 / 0.35 = 40
Peter had 40 cards, he added 14 new baseball cards, so he now has 40+14=54
Peter now has 54 baseball cards
$417.50 should be the correct answer you just multiply the $7.25 to 30 and then add the $200.
Answer:
Decimal: 0.33
Percent: 33.33
Step-by-step explanation:
First 3/1 =0.33333333333 and so on
so put first to numbers 0.33
Second move decimal to right 2 places.
0.33 -> 03.3-> 33.0 or 33
There you go
Formula: V = (2/3) π r 3.
Radius is 3cm.
So, now we can plug it in to solve for the volume.
V = (2/3) π 3^3
First, let's multiply 3^3.
3^3 = 27
Then, 27 x π = 84.82
After, multiply by 2/3.
84.82 x 2/3 = 56.55
Lastly, round 56.55 to the nearest tenth of a cubic centimeter.
56.55 = 56.6
Therefore the volume of a hemisphere with a radius of 3cm is 56.6cm^3.
Answer: Each student should raise $225
Step-by-step explanation:
$12,500-$1,250= $11,250
$11,250/50= $225
Check answer:
$225x50= $11,250
