Answer:
The GCF of 21 and 30 is 3.
Step-by-step explanation:
Find the prime factorization of 21
21 = 3 × 7
Find the prime factorization of 30
30 = 2 × 3 × 5
To find the gcf, multiply all the prime factors common to both numbers:
Therefore, GCF = 3
3
Factors of 21: 1, 3, 7, 21
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
The GCF is the largest factor they both have.
GCF = 3
It is 100 times smaller because 1.95x100=195 !!!
Answer: 72
Prism area = b * h
base = 4 * 3 = 12
height = 6
12 * 6 = 72
Use the distributive property.
3(6 + x) = 24
18 + 3x = 24
3x = 6
x = 2
Answer: 10x+16
Use the distributive property a(b+c)= ab+ac
so
-2(-5x-8) = (-2 * -5x) - (-2* -8)
=
10x-(-16)
=10x+16
Hope this helped!
