Step-by-step explanation:
LCM of 18, 30 and 42
= 2×3×3×5×7
=630 option B
After 630secs the planets will be aligned again
Answer:
y = 2x + 3
Step-by-step explanation:
The gradient (2x) is the same since the lines are parallel
The y-intercept(+3) is different however, since this line passes through co-ordinate (-1,3) It is +3 because in a co-ordinate the x and y co-ordinate is in this order (x,y). Therefore, the y number represents which y co-ordinate the line passed through the y axis.
Answer:
An expression to represent the number of butterflies he has is y = 12 + 2x
Step-by-step explanation:
Let the number of butterflies in Eduardo’s collection be y
Then according to the question
The number of moths = x
The number of butterflies y = 12 + twice the number of moths---------(1)
Twice the number of moths = 
Twice the number of moths = 2x -----------------------(2)
Substituting equation (2) in (1)
The number of butterflies y = 12 + 2x
Answer: The answer is A i think
Step-by-step explanation: