Her error in terms of inches was 2 inches while her percent error was 4.166%
Step-by-step explanation:
Step 1; From the given data Claire estimated her brother to be shorter than he actually was. She estimated his height to be 4 feet while it was actually 4 feet 2 inches.
We convert the feet into inches because 12 inches are equal to a feet.
4 feet = 4 × 12 inches = 48 inches
4 feet 2 inches = (4 × 12 inches) + 2 inches = 48 + 2 = 50 inches
Error in terms of inches = 50 inches - 48 inches = 2 inches.
Step 2 ; Her percent error is given by dividing the difference in values by the actual value multiplied by 100.
% error = (difference in values / actual value) × 100
Claire's % error = (50 - 48)/ 48 × 100 = 2/48 × 100 = 0.04166 × 100 = 4.166%.
Answer:
11 gold fish
Step-by-step explanation:
We are told that
In a fish tank, 50% of the fish are clown fish and there are 33 clown fish in the fish tank.
Let the total number of fishes in the tank be = x
Hence,
50% of x = 33
50/100 × x = 33
50x/100 = 33
Cross Multiplying
50x = 33 × 100
x = 33 × 100/50
x = 66 fishes
Hence, the total number of fishes in the tank = 66 fishes
1/3 are angel fish
The number of angel fishes are
1/3 × 66 fishes = 22 angel fish
•The rest are goldfish. How many goldfish are there in the fish tank?
The number of gold fish is calculated as:
Total number of fishes -( Number of clown fish + Number of angel fish)
= 66 - (33 + 22)
= 66 - 55
= 11
Therefore, the number of gold fish is 11
Given: The smallest angle of rotational symmetry for a regular polygon is 30 degrees.
We have to determine the number of regular sides, a polygon have.
Number of regular sides of a polygon is given by the formula=
= 
= 12 sides
Therefore, there are 12 regular sides of this polygon.
