Answer:
Step-by-step explanation:
let the length of rectangle=l units
width=9
p=2(l+9)
area=9l
9l=2(l+9)
9l=2l+18
7l=18
l=18/7 units
Answer:
A 65.5%
Step-by-step explanation:
Percent decrease = (original - new)/ original * 100 percent
= (290-100)/290 * 100 %
= 190/290* 100%
=.655172414 * 100%
=65.5172414%
To the nearest tenth percent %
65.5%
I will show you how to do #5:
a). -20 + 2(n-1) Original Expression
-20 +2n - 2 Distributive Property
-22 + n Combine Like Terms
Final Expression: -22 + n
b). 1.5 + (-2.5)(n -1) Original Expression
1.5 + -2.5n + 2.5 Distributive Property
4 - 2.5n Combine Like Terms
Final Expression: 4 - 2.5n
Answer:
The answer are the options B and C


Step-by-step explanation:
we know that

In this problem we have

substitute

solve for sin(x)


substitute the value of sin(x) and solve for cos(x)






The function tangent is equal to

substitute the values

Identity property of addition