21,45,6
21=3*7
45=3*3*5
6=3*2
LCM= 3*3*7*5*2
LCM=630
Answer:
14
Step-by-step explanation:
45/3=15
She has 3 left so that means she has 14 friends
Answer:
<u>option C. (x + 4) and (x − 8)</u>
Step-by-step explanation:
A factor is one of the linear expressions of a single-variable of the polynomial.
Given: y = (1/4)(x + 4)(x - 8)
When y = 0
∴ (1/4)(x + 4)(x - 8) = 0 ⇒ multiply both sides by 4
∴ (x + 4)(x - 8) = 0
So, the factors of the function are (x+4) and (x-8)
The answer is option <u>C. (x + 4) and (x − 8)</u>
Answer:
x = 1, y = 2
Step-by-step explanation:
7x + 2y = 11 -----Equation 1
Equation 1 × 7:
49x + 14y = 77 -----Equation 2
-------------------------------------------------------------------------------------------------------------
4x - 7y = -10 -----Equation 3
Equation 3 × 2:
8x - 14y = -20 -----Equation 4
-------------------------------------------------------------------------------------------------------------
Equations 3 + 4:
49x + 14y + 8x - 14y = 77-20
49x + 8x = 77-20
57x = 57
x = 57 ÷ 57
x = 1
Substitute x = 1 into Equation 1.
7x + 2y = 11
7(1) + 2y = 11
7 + 2y = 11
2y = 11-7
2y = 4
y = 4 ÷ 2
y = 2