If (x + 1/x)^2 =9, then (x-1/x)^2= A) 3 B) 5 C) 7 D 9

HELP PLSS

masya89 [10]

Answer:

the bacteria population increases at a constant rate

3 0

3 years ago

1. Solve the absolute value equation, if possible. If there is no solution, explain why. | 5x + 10| = -7

Brilliant_brown [7]

Rule of thumb: ANY absolute value is positive.

I 5x + 10I = -7

5x + 10 = -7 -Subtract 10 from both sides of the equation.

5x + 10 - 10 = -7 - 10

5x = -17 -Divide both sides by 5.

5x / 5 = -17 / 5

x = -3.4

Hope this helps! Have a happy thanksgiving, here's a turkey!

3 0

3 years ago

Read 2 more answers

Determine the equation of the ellipse.

AURORKA [14]

Answer:

A) x²/25 + y²/9 = 1

Step-by-step explanation:

The major axis length is the sum of distances to the foci from the ellipse, 10. So the semi-major axis has length 10/2 = 5. The foci are on the x-axis, so the ellipse is oriented horizontally.

The semi-minor axis is the other leg of the right triangle having the focus and center as one leg, and the semi-major axis as the hypotenuse. This is obviously a 3-4-5 triangle, so the semi-minor axis length is 3.

When the ellipse is horizontal, the formula for it is ...

... (x/(semi-major axis))² + (y/(semi-minor axis))² = 1

... (x/5)² + (y/3)² = 1

... x²/25 + y²/9 = 1

7 0

3 years ago

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best po

mina [271]

Answer:

(a) The point estimate for the population proportion p is 0.34.

(b) The margin of error for the 99% confidence interval of population proportion p is 0.055.

(c) The 99% confidence interval of population proportion p is (0.285, 0.395).

Step-by-step explanation:

A point estimate of a parameter (population) is a distinct value used for the estimation the parameter (population). For instance, the sample mean $\bar x$ is a point estimate of the population mean μ.