Answer:
either one will work.
you can either multiply length times width or you can add all the sides together.
Step-by-step explanation:
hope this helps
have a good day
Answer:
x=4
y=4√5
Step-by-step explanation:
Set up 3 right triangles and mark their respective angles. The largest will have sides (in typical a,b,c[hypotenuse] order) y, z, and 10. The middle 8, x, and y. The smallest x, 2, and z.
Then since they are all similar triangles, using the midde and smaller triangles, set up the proportionin which both A sides when divided are equal to the B sides.
So 8/x = x/2
Cross multiply and get 16=x^2.
The square root of 16 is 4, so x is 4.
Then using the larger and middle triangles, do the same for the A and C sides.
So y/8 = 10/y.
Cross multiply and get 80=y^2.
Find the square root of it, which since it doesn't have a perfect square, you use a calculator or the whatever theorem and get √4*4*5 or simply 4√5.
So x = 4 and y = 4√5
Answer: 4 feet and 2 feet
Step-by-step explanation: The only factor of 8 that is an even integer is 4 and 2. So the answer is 4 feet and 2 feet.
The functions that model R for men and women are missing.
Nevertheless, I searched for them and here they are:
For women, R = 143 - 0.65a
For men, R = 165 - 0.75a
You are asked for the age of a man whose desirable R is 135, so you must use the equation for men, R = 165 - 0.75a, replace 135 for R and solve for a.
=> 135 = 165 - 0.75a
=> 0.75 a = 165 - 135
=> 0.75 a = 30
=> a = 30 / 0.75
=> a = 40.
Answer: option b. 40 years old.