Answer:
-5/32
Step-by-step explanation:
Step-by-step explanation:
2x+3=9
2x=9-3
2x=6
x=6/2=3
Answer:
40,000 units on the first day then 18% per week
Step-by-step explanation:
Exponential function:
An exponential function has the following format:
In which r is the rate of change, as a decimal.
In this question:
The number of phones sold in thousands of units per day, in t weeks since the date of release, is:
Since , it solds 40,000 on the first week.
The rate of percentage increase is:
1 + r = 1.18
r = 0.18
So an increase of 0.18 = 18% a week.
So the correct option is:
40,000 units on the first day then 18% per week
$3.50
Step-by-step explanation:
Perimeter of triangle ABC is 20 units.
Solution:
The image for reference is attached below.
Given AE = 2, BD = 5 and CF = 3
Two tangents drawn from an external point to a circle are equal in length.
AD = AE, BF = BD and CE = CF
Therefore, AD = 2, BF = 5 and CE = 3
Perimeter of the triangle = sum of the three sides
Perimeter of triangle ABC = AB + BC + CA
= AD + BD + BF + CF + CE + AE
= 2 + 5 + 5 + 3 + 3 + 2
= 20
Hence, perimeter of triangle ABC is 20 units.