Answer:
2y-10
Step-by-step explanation:
-2(7-y)+4
distribute:
=(-2)(7)+(-2)(-y)+4
= -14+2y+4
Combine like terms:
= -14+2y+4
=(2y)+(-14+4)
= 2y+-10
Answer: i can give you tips of how to find the area of a polygon.
OK SO To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides.
Step-by-step explanation:
And you have to add all the sides of the lengths of the sum of the polygon
I need more information, such as, if its a triangle or a square, yk what I mean?
Answer:
The discriminant determines the nature of the roots of a quadratic equation. The word 'nature' refers to the types of numbers the roots can be — namely real, rational, irrational or imaginary. ... If Δ≥0, the expression under the square root is non-negative and therefore roots are real.
Step-by-step explanation:
Answer:
x = 13.6 cm
Step-by-step explanation:
part A:
using tan rule:
part B:
using tan rule:
Total length of x:
part A + part B
cm
