Answer:
A = Distributive Property of Multiplication
B = Addition Property of Equality
C = Subtraction Property of Equality
Step-by-step explanation:
Given:
5(2x - 1) = 9x + 2
The first step is to use the distributive property and multiply 5 to both numbers inside the brackets. So, A will be Distributive property of multiplication, which will result in:
5(2x) - 5(1) = 9x + 2
10x - 5 = 9x + 2
The next step is to add 5 on both sides of the equation. So, B will be the Addition property of equality, which will result in:
10x - 5 + 5 = 9x + 2 + 5
10x = 9x + 7
The next step is to subtract 9x from both sides of the equation. So, C will be the Subtraction property of Equality, which will result in:
10x - 9x = 9x + 7 - 9x
x = 7
Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)
y=1/8 x (2y+66)
Cross multiply
y x 8=2y + 66
8y=2y + 66
Collect like terms
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
The number of girls is 11
Answer:
1.120 degree
2.100 degree
3.180 degree
4.300 degree
5.240 degree
6.240 degree
7.240 degree
Step-by-step explanation:
1.
Answer:
6 square feet
Step-by-step explanation:
Area = L * w
26 = L * 4 1/3
26 = L * 13/3
L = 26 divided by 13/3
L = 26 * 3/13 = 6
answer = 6
