B.$31.20
C.$38.40
D.$115.20
Answer: I believe the answer is A.
Step-by-step explanation:
The fact family using the numbers 5, 6 and 30 are 5×6=30 6×5=30, 30÷5=6 and 30÷6=5
A number system is defined as a system of writing to express numbers.
The given three numbers are 5, 6 and 30
We need to write the numbers 5 6 and 30 as
Thirty divided by five equal to six
30÷5=6
Thirty divided by six equal to five
30÷6=5
Five multiplied by six is thirty
5×6=30
Six multiplied by five is thirty.
6×5=30
Hence,the numbers 5, 6 and 30 are 5×6=30 6×5=30, 30÷5=6 and 30÷6=5
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x+y=37
x-y=7
2y=30
y=15
x+15=37
x=22
answer C
Answer:c
Step-by-step explanation: