Answer:
12
Step-by-step explanation:
Largest number-smallest
13-1=12
Answer:
Step-by-step explanation:
Becuase the moon is completely covering the sun for 7 minutes
Answer:
15. A
16. B
17. B
18. C
Step-by-step explanation:
Answer:

or

Step-by-step explanation:
Divide the numerator and the denominator by the same number:

or
Multiply the numerator and the denominator by the same number:

Answer: -10, 10
Step-by-step explanation:
first lets add the two equations. add the x's, add the y's, add the constants on the right.
we get
0x - 1y = -10
so then divide --10 by -1 because we do the opposite operations to both sides
and we get y = 10
now substitute y = 10 into the first equation
-10x - 9(10) = 10
and then we get -10x - 90 = 10
now add 90 to both sides
-10x = 100
divide 100 by -10
x = -10
y = 10
checks out
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