2(10+5)−5
=(2)(15)−5
=30−5
=25
C is the answer.
((n-2)×180)/n = 156
(n-2)×180=156n
24n =360
n =15
360/n =36
n = 10
a)15 b)10
Step-by-step explanation:
I'm guessing
second one
removing some of the sentences
What 2 numbers multiply to get -20 and add to get -8
-10 and 2
(p-10)(p+2)
Answer:
Measure the distance of treads (Exclude the width of nosing). If all the treads are uniform in size, measure one tread otherwise you will need to measure all treads. ...
Measure the height of risers. ...
Divide the riser height by the tread width and then calculate the inverse tangent.