Answer:
Step-by-step explanation:
2^2×2^3(x+1)=2^2x
same base cancel,you will get
2+3x+3=2x
take same variable then - or + you will get
What are the errors hggtdgdd
2 answers:
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Answer:
The teenagers spent 4.5 hours per week, on average, on the phone.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 4.5
Sample mean, = 4.75
Sample size, n = 15
Alpha, α = 0.05
Sample standard deviation, s = 2
First, we design the null and the alternate hypothesis
We use one-tailed(right) t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We accept the null hypothesis. Thus, the teenagers spent 4.5 hours per week, on average, on the phone. The sample contradicted the organization's claim.
Answer:
y = -16
Step-by-step explanation:
First lets handle the fractional y's:
This can be reduced down to 2y. That is easier to work with. Next we will rewrite the equation using or new value for y:
35 + 2y = 3
Subtract 35 from both sides:
2y = -32
Next, divide both sides by 2
y = -16
Check our answer:
35 +
35 -40 + 8 = 3
-5 + 8 = 3
3 = 3