Answer:
x=-7
Step-by-step explanation:
Subtract 5 from both sides.
−x=12−5
Subtract 5 from 12 to get 7.
−x=7
Multiply both sides by −1.
x=−7
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Answer:
95% Confidence interval: (39.43, 61.58)
Step-by-step explanation:
We are given the following in the question:
Sample mean, = $50.50
Sample size, n = 15
Alpha, α = 0.05
Sample standard deviation = 20
95% Confidence interval:
Putting the values, we get,
95% Confidence interval: (39.43, 61.58)
Answer:
The value of x is .
Step-by-step explanation:
It is given that hypotenuse is . So, the legs would be x and 8.
Let's use Pythagoras theorem,
Plug in the numbers to solve for x.
Simplify it
Subtract both sides 64.
Take square root on both sides
x=
We can not simplify the radical.
So, let's keep this as answer.
If you have the area of the rectangle, then the equation would be A = W*L
Lets say the area is 15 and the width is 3. You don't know what the length is. Just divide 3 into 15 to get 5. Hope this helps!