C is the correct answer to this question :)
Legs legnth a and b, and hypotnuse c
a^2+b^2=c^2
legs are 9 and 12
a=12
b=9
12^2+9^2=c^2
144+81=c^2
225=c^2
sqrt both sides
15=c
the legnth of the hyptonuse is 15 inches
Answer:
8.66 = 9
Step-by-step explanation:
The square root of 75 is approximately equal to 8.66 but if rounded 9
Answer:

Step-by-step explanation:
Equation of a straight line: y = kx + b
Points: (-1,2) and (3,4)
Сompose the system of equations:






Answer:
Step-by-step explanation:
From the first image attached below, we will see the sketch of the curve x = y² & x = 2y
In the picture connected underneath, the concealed locale(shaded region) is bounded by the given curves. Now, we discover the marks of the crossing point of the curves. These curves will cross, when:

Thus, the shaded region fall within the interval 0 ≤ y ≤ 2
Now, from the subsequent picture appended we sketch the solid acquired by turning the concealed region about the y-axis.
For the cross-sectional area of the washer:

Finally, the volume of (solid) is:
![V = \int^2_0 A(y) \ dy \\ \\ V = \int^2_0 \pi (4y^2 -y^4) \ dy \\ \\ V = \pi \int^2_0 (4y^2 -y^4) \ dy \\ \\ V = \pi \Big[\dfrac{4}{3}y^3 - \dfrac{y^5}{5} \big ] ^2_0 \\ \\ V = \pi \Big [ \dfrac{4}{3}(2)^3-\dfrac{2^3}{5} \Big ] \\ \\ V = \dfrac{64}{15}\pi \\ \\ V = (4.27 ) \pi](https://tex.z-dn.net/?f=V%20%3D%20%5Cint%5E2_0%20A%28y%29%20%5C%20dy%20%5C%5C%20%5C%5C%20%20V%20%3D%20%5Cint%5E2_0%20%5Cpi%20%284y%5E2%20-y%5E4%29%20%5C%20dy%20%20%5C%5C%20%5C%5C%20V%20%3D%20%5Cpi%20%5Cint%5E2_0%20%284y%5E2%20-y%5E4%29%20%5C%20dy%20%20%5C%5C%20%5C%5C%20V%20%3D%20%5Cpi%20%5CBig%5B%5Cdfrac%7B4%7D%7B3%7Dy%5E3%20-%20%5Cdfrac%7By%5E5%7D%7B5%7D%20%20%20%5Cbig%20%5D%20%5E2_0%20%5C%5C%20%5C%5C%20%20V%20%3D%20%5Cpi%20%5CBig%20%5B%20%5Cdfrac%7B4%7D%7B3%7D%282%29%5E3-%5Cdfrac%7B2%5E3%7D%7B5%7D%20%5CBig%20%5D%20%20%5C%5C%20%5C%5C%20%20V%20%3D%20%5Cdfrac%7B64%7D%7B15%7D%5Cpi%20%20%5C%5C%20%5C%5C%20V%20%3D%20%284.27%20%29%20%5Cpi)