Answer:
The answer is 13.
Step-by-step explanation:
(b) Find the value of 2a + b: Remember that 2a means 2 × a. Replacing a by 4 and b by 7 gives 2×4 + 7.
Answer:
try putting an imaginary 1 in front of your variable (c). so
1c + 4c = 15
combine like terms
(1c + 4c) = 5c
therefore we have
5c = 15
now, divide BOTH sides of the equation by 5
5c/5 = 15/5
5c/5 = c
15/5 = 3
c=3
Several places. You could subtract 2 from the left side of the equation, or add 2 to the right side of the equation; both would work.
Answer:
m/s*3
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Answer:
2.
Step-by-step explanation:
It's a random sample, so anyone could be sampled. Everyone has the same rate of being sampled, therefore the results are fair and equal.