Answer:
Yes it is: y = -22
Step-by-step explanation:
Simply Divide through by a minus sign
-y = 22
y = -22
Answer:
40%
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Step-by-step explanation:
Is/of=%/100
8/20=%/100
8*100=800
800/20=40
She paid only 20% of the usual price.
How much did she pay? Mult. $15 by 0.20: result is $3.00.
Salma got the item for $3, which is 80% off the regular price of $15.
1 + 2 + 3 + ... + n = n(n + 1)/2.
So:
13 + 14 + 15 + ... + 37
= (1 + 2 + 3 + ... + 37) - (1 + 2 + 3 + ... + 12)
= 37(37 + 1)/2 - 12(12 + 1)/2
= 625.
Since there are 25 integers, the average is 625/25 = 25.