First do the multiplication inside the parenthesis
(-y+15) + (7.2y-9)
Remove the parenthesis now
-y+15+7.2y-9
Simplify:
6.2y +6
So your final answer is
Answer:
∠ HCF = 108°
Step-by-step explanation:
∠ ABG and ∠ HCF are alternate exterior angles and are congruent, thus
12x = 11x + 9 ( subtract 11x from both sides )
x = 9
Thus
∠ HCF = 11x + 9 = 11(9) + 9 = 99 + 9 = 108°
Answer:
Step-by-step explanation:
The formula to find the area of a trapezoid is the following,
Where (
) represents the heights of the trapezoid, (
) and (
) represent the bases of the trapezoid, or rather the two parallel sides of the trapezoid.
One is given all of these values in the picture,
Substitute these values into the formula and solve for the area of the trapezoid,
Simplify,
Answer:
You have to put energy into a molecule to break its chemical bonds. The amount needed is called the bond energy. After all, molecules don't spontaneously break
Step-by-step explanation:
