Answer:
35 degrees
Step-by-step explanation:
To start off, the term "acute angle" means less than 90 degrees. In this case, the acute angle is 55 degrees.
The type of triangle mentioned in the question is a right-angled triangle, meaning it has a right triangle (90 degrees) along 2 other triangles. A triangle is generally 180 degrees. So now that we know the value of 2 out of 3 angles we do simple math.
Assume the unknown angle is A.
55 + 90 + A = 180
A = 35
Expression: <span>y÷4−3</span>
When <span><span>y=20</span><span>y=20</span></span>, the value of the expression is 2.
x = –3, then –x = –(–3) = +3,
Answer with Step-by-step explanation:
Let A is non-singular
We have to prove that 
is unique.
Suppose B and C are inverse of A such that
and AC=I
By using property 
Hence, the inverse of A is unique.
First Division, next Addition and Subtraction (left-to-right)
4 + 8 : 2 - 1 = 4 + 4 - 1 = 8 - 1 = 7
<h3>Answer: b. 7</h3>
