Answer:
Step-by-step explanation:
We have the following expression:
Which can also be written as:
Since we have exponents with the same base inside the parenthesis, we can sum both exponents:
Now, we have to multiply the exponent out of the parenthesis with the inner exponent and have the following result:
2x + 5 = 0.5x - 1
(Multiplying by 2 cause I hate fractions/decimals)
4x + 10 = x - 2
3x + 10 = -2
3x = -12
x = -4
Y = 2x + 5
Y = 2(-4) + 5
Y = -8 + 5
Y = -3
Y = 0.5x - 1
Y = 0.5(-4) - 1
Y = -2 - 1
Y = -3
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Answer:
27.55
Step-by-step explanation:
The mean of a set of numbers is the sum divided by the number of terms.
So 49.7 + 15.8 + 22.7 + 15.1 + 32.2 + 39.1 +27.7 + 18.1 = 220.4
220.4 / 8 = 27.55
Should be option 1. i cant really gv an explanation tho sry :/