If the family plans to move to their retirement home in 10 years, which pool would be more cost effective to install? How do

Mathematics

2 answers:

WITCHER [35]3 years ago

8 0

Answer: A

i got it right on the quiz

lubasha [3.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

but is their any answer choices

You might be interested in

PLEASE HELP ASAP!!! 7TH GRADE MATH

Alik [6]

Answer:

answer is $330

Step-by-step explanation:

If you are ever dealing with percentages always put them into a decimal itll make things a lot easier

how you do that is 55/100 which is 0.55

then just multiply by the original number

0.55 times 600 which is 330

hope this helped

4 0

3 years ago

Find the volume of the solid bounded by z = 2 - x2 - y2 and z = 1. Express your answer as a decimal rounded to the hundredths pl

butalik [34]

Answer:

The answer is " $(\frac{\pi}{2})$ ".

Step-by-step explanation:

$z = 2 - x^2 - y^2.........(1) \\\\z = 1.............(2)$

Let add equation 1 and 2:

Using formula: $x^2+y^2=1 \\\\$

convert to polar coordinates

$r=2$

$\theta \varepsilon (0=\pi)=z\\\\V=\int^{2\pi}_{\theta=0}\int^{1}_{\pi=0}\int^{z_{2}}_{z_1} r \ dr \d \theta\\\\$

$=\int^{2\pi}_{0}\int^{1}_{0} (Z_2-z_1)r \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} 1- (-1-x^2-y^2) r \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} (+1 \pm r^2) r \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} (-r^3 + r) \ dr \d \theta\\\\=\int^{2\pi}_{0} (-\frac{r^4}{4}+\frac{r^2}{1})^{1}_{0} \d \theta\\\\=\int^{2\pi}_{0} (\frac{1}{4}) \d \theta\\\\=(\frac{2 \pi}{4}) \\\\=(\frac{\pi}{2}) \\\\$