Answer:
the answer is: A
because deduce means to arrive at a fact or conclusion by reasoning.
also because the correct word you would use In option A is reduce.
Yes, is subtraction, to get their "difference".
first off, let's convert the mixed fractions, to "improper", and then subtract.
![\bf \stackrel{red~yarn}{9\frac{1}{5}}-\stackrel{blue~yarn}{3\frac{11}{25}}](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7Bred~yarn%7D%7B9%5Cfrac%7B1%7D%7B5%7D%7D-%5Cstackrel%7Bblue~yarn%7D%7B3%5Cfrac%7B11%7D%7B25%7D%7D)
Hello again! So we will be using the pythagorean theorem (
![leg^2+leg^2=hypotenuse^2](https://tex.z-dn.net/?f=leg%5E2%2Bleg%5E2%3Dhypotenuse%5E2)
) to solve for the bottom leg of the triangles. After we do that, we'll subtract the value of the legs from 31, and that'll be x.
Plug in 17 and z (or any variable that isn't x) into the leg variable and 19 into the hypotenuse variable, and from there we can solve.
![17^2+z^2=19^2](https://tex.z-dn.net/?f=17%5E2%2Bz%5E2%3D19%5E2)
Solve the exponents to get
![289+z^2=361](https://tex.z-dn.net/?f=289%2Bz%5E2%3D361)
Subtract 289 on each side to get
![z^2=72](https://tex.z-dn.net/?f=z%5E2%3D72)
Lastly, square root each side of the equation and your answer should be
![z= \sqrt{72}](https://tex.z-dn.net/?f=z%3D%20%5Csqrt%7B72%7D)
(To get more accurate answers, you shouldn't round until the end of the problem)
Nextly, we will need to subtract
![\sqrt{72}](https://tex.z-dn.net/?f=%20%5Csqrt%7B72%7D)
from 31. And since there are 2 triangles, you'll need to multiply
![\sqrt{72}](https://tex.z-dn.net/?f=%20%5Csqrt%7B72%7D)
by 2.
In short, x = 14.0
Answer:
its decreasing. .........
You could write 42/20 for #60.