Answer:
12 marbles are blue.
Step-by-step explanation:
3 x 4 = 12, so 40 % of 30 is 12.
Answer:
Step-by-step explanation:
let the number be x
x multiplied by x = 
Adding 4 to the result
=
+ 4
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The answer is 5 because 10 minus 5 is 5, so the difference is 5.
Answer:
c =
- d
Step-by-step explanation:
Multiply both sides by 2 to eliminate the fraction
2A = b(c + d) ← divide both sides by b
= c + d ← subtract d from both sides
- d = c
Answer:
Step-by-step explanation:
4 and 2