Answer:
x=-1
Step-by-step explanation:
x+2-1=0
-1+2=1
1-1=0
y=0
Answer:
Step-by-step explanation:
Hello,
<u>The mean of five numbers is 8</u> so we can write
<u>When another number is added the mean is 7</u>, let s note x the another number we can write
From the first equation we can say
So the second equation becomes
The solution is then 2
Hope this helps
B, there are 1000m in a km.
Answer:
a ) 2¹/2
Step-by-step explanation:
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.70 * x = 9.1
.70/.70 * x = 9.1/.70
x = 13