Answer:
The area of a triangle can be found using:
a=1/2 bh
or
a=(bh)/2
where b is the base and h is the height
Answer: the fourth option: you make a percent proportion with the amount of change over the original amount
Step-by-step explanation:
<span>Supplementary angles are two angles that add to 180 degrees.
The equation is </span><span>4x + 5x = 180.
(combine like terms and simplify) 9x=180
180/9=20
so x = 20
So that would mean 4x= 80.
The smaller angle is equal to 80. Since supplementary angles add up to 180, you have a clue as to what the larger angle measures to.
</span>
Answer:
Answer: 13 months.
Step-by-step explanation:
First phone:
f(x)= cost of the first phone
x=number of months
f(x)=55x+100
Second phone:
g(x)=cost of the second phone.
x=number of months.
g(x)=51x+150
Therefore:
The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is:
g(x)<f(x)
51x+150<55x+100
Answer: 51x+150<55x+100
The solution to the inequality is:
51x+150<55x+100
51x-55x<100-150
-4x<-50
-x<-50/4
-x<-12.5
x>12.5
Answer: x>12.5 months (x>13)
Sal’s mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.
