Answer:

Step-by-step explanation:

Add like terms.


Answer:
its 69
Step-by-step explanation:
138/2=69
I think it's b okay Im sure
Set the ones digit to x. 2x+1=7, so 2x=6, so x=3.
x+1 is the tens digit, so the tens digit is 4 and the number is 43.
Answer:
Distance LM = 5.20 unit (Approx.)
Step-by-step explanation:
Given coordinates;
L(1, 4, 7) and M(2, 9, 8)
Find:
Distance LM
Computation:
Distance between three-dimensional plane = √(x2 - x1)² + (y2 - y1)² + (z2 - z1)²
Distance LM = √(2 - 1)² + (9 - 4)² + (8 - 7)²
Distance LM = √(1)² + (5)² + (1)²
Distance LM = √1 + 25 + 1
Distance LM = √27
Distance LM = 3√3 unit
Distance LM = 3(1.732)
Distance LM = 5.196
Distance LM = 5.20 unit (Approx.)