Answer:
180°
Step-by-step explanation:
I think this is the answer
because the line is straight from the point ACE
see
your x-intercept is 3 and I don't know why I have to do 20 characters for an answer that involves 3 words and 1 number
Suppose the line is y=mx+b
when x=3, y=15, so 15=3m+b
when x=-1, y=-13, so -13=-m+b
solve the system of these two equation, you get m=7, b=-6
so the linear equation is y=7x-6
Since density is the ratio of mass to (in this case) area, we can find the mass of the triangular region by computing the double integral of the density function over :
The boundary of is determined by a set of lines in the plane. One way to describe the region is by the set of points,
So the mass is
Answer:
A cos C = 12/13
Step-by-step explanation:
cos theta = adjacent side/ hypotenuse
cos C = BC/AC
But we don't know BC, but we can find it using the Pythagorean theorem
a^2 +b^2 = c^2
5^2 +BC^2 = 13^2
25 + BC ^2 =169
Subtract 25 from each side
BC^2 = 169-25
BC ^2 = 144
Taking the square root of each side
BC =12
cos C = 12/13