2(x-8)=7
Distribute on the left side
2x-16=7
Add 16 to both sides
2x=23
Divide both sides by 2
x=11.5
Final answer: The number is 11.5
Answer:
And replacing we got:
Step-by-step explanation:
For this case we have the following info given:
represent the sample size selected
represent the population proportion
We want to find the standard error and we can use the distribution for the sample proportion and for this case since the sample size is large enough and we satisfy np>10 and n(1-p) >10 we have:
And the standard error is given;
And replacing we got:
The velocity of the jogger will be 0.18 miles per minute.
<h3>What is velocity?</h3>
Velocity is defined as the ratio of the distance moved by the object in a particular time. The velocity is a vector quantity so it needs both the magnitude and the direction.
Given that:-
- It took the jogger 45 minutes to cover the 8 miles
The velocity will be calculated as:-
V = Distance ÷ Time
V = 8 ÷ 45
V = 0.18 miles per minute
Therefore the velocity of the jogger will be 0.18 miles per minute.
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X= 270
simplify the equation using cross multiplication
X-3<-9
x<-6, x∈(-∞;-6)
x+5≥10
x≥5, x∈[5;+∞)