Part 1
1. 16-composite
2. 0- Neither
3. 29- prime
4. 33- composite
5. 47- prime
6. 51- composite
7. 64- Composite
8. 73- prime
9. 12- Composite
10. 24- Composite
11. 17- prime
12. 38- composite
Answer:
B. 19.1cm
Step-by-step explanation:
Perimeter of a square = 4 × length
Perimeter = 54cm
Perimeter of a square = 4 × length
54 = 4 × length
54 = 4l
Divide both sides by 4
l = 54 / 4
= 13.5cm
Find the length of a diagonal,
Diagonal = hypotenuse
Using Pythagoras theorem
Hypotenuse^2 = opposite^2 + adjacent^2
Opposite = adjacent in a square because of the equal length
Opposite = adjacent = 13.5cm
Hypotenuse^2 = opposite^2 + adjacent^2
= 13.5^2 + 13.5^2
= 182.25 + 182.25
Hypotenuse^2 = 364.5
Find the square root of both sides
√Hypotenuse^2 = √ 364.5
Hypotenuse = 19.09cm
To the nearest tenth = 19.1cm
B. 19.1cm
Answer:
186 mph
Step-by-step explanation:
Miles per hour means miles divided by hour(s), so 558/3 is 186 miles per hour.
Hello!
GCF, or greatest common factor, is the greatest factor shared between two numbers. (A factor is something which you can divide a number by to get a whole number)
To do this, first list out all the factors of 21 and 25. (There are other methods to do this, but, this method will work for smaller numbers)
21: 1, 3, 7, 21
25: 1, 5, 25
As you can see, the greatest factor shared between them is the number 1.
Therefore, the GCF of 21 and 25 is 1.
Hope this helps!
(Side note: a better method to do this for larger numbers is to list out the prime factorization for each number, then find all the numbers in common, and multiply)
Total shells Sandy had = 5
Shells Mageret got = 3
Balance of Seashells
5 - 3
2
