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3 years ago

Mr. Jones bought a piece of land for 60 000. The land increased in value by 20% in a year. The new value of the land is

Mathematics

1 answer:

borishaifa [10]3 years ago

4 0

Answer:

$72,000

Step-by-step explanation:

If we take 60,000 and then take 20 percent of it, we get 12,000. Then we add 12,000 to 60,000 and it gives us 72,000.

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A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c

Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

$n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q }{E^2}$

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of (1 - confidence level)/2. Use the calculator function of invNorm to find the z-score. The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p. For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

$n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333$

Round up to the next number, giving you 405.

6 0

3 years ago

Find the area of the parallelogram shown below and choose the appropriate result.

Lisa [10]

Answer:

The area of the parallelogram is 0.1875 mile² ⇒ D

Step-by-step explanation:

The formula of the area of a parallelogram is A = b1 × h1 = b2 × h2, where

b1 and b2 are two adjacent sides of it

h1 and h2 are the heights perpendicular to these bases

In the given figure

∵ There is a parallelogram

∵ One of its bases is 0.25 mile

∴ b1 = 0.25 mile

∵ the height of this base is 0.75 mile

∴ h1 = 0.75 mile

→ By using the rule of the area above

∴ The area of the parallelogram = 0.25 × 0.75

∴ The area of the parallelogram = 0.1875 mile²

∴ The area of the parallelogram is 0.1875 mile²

6 0

2 years ago

Which equation describes the same line asy- 3 =-1(x+ 5)?

aliya0001 [1]

The answer would be A

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3 years ago

Graph the function. Find the y-intercept and state the domain and range. Y = 3(2^x) - 4

Thepotemich [5.8K]

Answer:

the first one

Step-by-step explanation:

4 0

3 years ago

Which angles are complementary?

Law Incorporation [45]

It is B because those two angles make it complementary

3 0

3 years ago

Mr. Jones bought a piece of land for 60 000. The land increased in value by 20% in a year. The new value of the land is​

Mr. Jones bought a piece of land for 60 000. The land increased in value by 20% in a year. The new value of the land is