all the sides of the triangle are the same because this is equilateral. this means:
(21 - x) = (2x - 3) = (x + 5)
Let's take (x+5) and (2x - 3)
x + 5 = 2x - 3 subtract x from both sides
5 = x -3 add 3 to both sides
8 = x you can rearrange this to x=8
Now it's the fun part! SUBSTITUTION! :D (sarcasm)
<u>BUT WAIT</u> Remember, all of the sides are equal to one another! That means we only have to solve for one side!
Let's do the top side. 21 - 8 = 13
Since there are 3 sides in a triangle, we can easily multiply the 13 by 3
13 x 3 = 39 The perimeter is 39 inches
Answer:
I will not tell you
Step-by-step explanation:
Not telling
Answer: 30/500, or 6%
Step-by-step explanation:
As at January 1st, there were 500 residents which represents the total population
Of the 500 residents on January 1st, 30 were infected with TB
To measure the prevalence of TB on January 1st, we divide the number of TB cases by the total population
We will therefore have it as: 30/500 0r 6%