B)
Because if you find the degrees for angle 1 you get:
180⁰ - 45⁰- 39⁰ = 96⁰ <- angle 1
The triangle in the center has 3 angles, and those 3 angles will equal 180⁰
So, 180⁰ - 96⁰ = 84⁰
Refer to the other answer to see how letter c was done
Answer:
x= 1 and y= -1
Step-by-step explanation:
I'm pretty sure it is the just substitution method that you need for this, which is how I solved it and I am confident.
Answer:
2n + 15
Step-by-step explanation:
This question is sort of confusing, but I will assume you want the sentence written as an expression.
We can represent any number as "n".
Doubling the number is the same as multiplying by 2:
2n + 15
Thusly, this sentence can be written as 
.
Hope this helps! ((:
Answer:
Step-by-step explanation:
1/2 * ( 9 * 6 * 10)
1/2 * 540
270 
We can write this as
(x - 5)^2 + (y + 3)^2 = r^2
where r = radius
Plugging in the point (2,5) we have
(2-5)^2 + (5+3)^2 = r^2
r^2 = 9 + 64 = 73
so the required equation is
(x - 5)^2 + (y + 3)^2 = 73
