Answer:
B) 20
Step-by-step explanation:
Each number in the equation needs to be a whole number, since you can't have 2.5 marbles or something like that.
2/5 of 16 is 6.4
2/5 of 20 is 8
2/5 of 21 is 8.4
2/5 of 26 is 10.4
Even though 20 is the only one that works, if you wanted to be sure it's right, just divide by three after subtracting 8 (the three remaining marbles.)
20-8=12
12÷3=4
The three remaining numbers would be equal and the amount of yellow numbers is a whole number. 20 is correct
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16x4=64; so we need two numbers that add up to 16 and their product should be 64. So x=8
Answer:
14
Step-by-step explanation:
2v - 7 = 9
Add 7 to both sides
2v = 16
Divide both sides by 2
v = 8
Plug it into 3v - 10
3v - 10 =
3(8) - 10 =
24 - 10 =
14
Answer:
Step-by-step explanation:
15x because its not multiplying or dividing or adding and subtracting
