Answer:
140
Step-by-step explanation:
5% x 20 = 100%
Therefore, if 5% = 7, then 20 x 7 = 100%, so the number is 20 x 7 = 140
First, you should substitute a, b, and c with -3, 9, and 4, so you get 4(-3(2)+9+4)
Next, following PEMDAS, you solve everything in the (,), leaving you with 4(7).
Lastly, your answer is 28.
Using the fact that the triangles shown are similar, we can set up a proportion between the lengths of the sides.
The side length in question is QR, or "x". To find its corresponding side in the larger triangle let's look at the similarity.
MNO is similar to PQR
Vertices are always written in order of correspondence when stating similarities. Since QR are the last two letters of the triangle's name, and NO are the last two letters of the larger triangle's name, we know that QR and NO are corresponding sides. We can apply this same method to any other side.
NO/QR = MN/PQ
(MN and PQ are also corresponding sides)
Now we can substitute the side names with their values.
4.5/x = 5/2
Cross multiply
5x = 9
Divide both sides by 5
x = 9/5 or 1.8 or 1 4/5
Hope this helps!
D.) 800, u add 5 dollars interest rate every time u go up 100 dollars
