6= 2D/5
5 x 6 = 30
30/2D
15=D
Answer:
Step-by-step explanation:
O
3x² - 11x - 4 = 0
a = 3 ; b = -11 , c = -4

W
8x² + 12x = -1
8x² + 12x + 1 = 0
a = 8 ; b = 12 ; c = 1

L
x² + x = 6
x² + x - 6 = 0
a = 1 ; b= 1 ; c = -6

G
x²- 2x - 2 =0
a = 1 ; b = -2 ; c = -2

E
4x - 5 = -4x²
4x² + 4x - 5 = 0
a = 4 ; b = 4 ; c = -5

B
12x² +x -6 = 0
a = 12 ; b = 1 ; c = -6

R
2x² + 5x - 25 = 0
a = 2 ; b = 5 ; c = -25

A
6x² -5x - 4 = 0
a = 6 ; b = -5 ; c = -4
![Sum \ of \ roots =\dfrac{-[-5]}{6}=\dfrac{5}{6}\\\\Product \ of \ roots = \dfrac{-4}{6}=\dfrac{-2}{3}](https://tex.z-dn.net/?f=Sum%20%5C%20of%20%5C%20roots%20%3D%5Cdfrac%7B-%5B-5%5D%7D%7B6%7D%3D%5Cdfrac%7B5%7D%7B6%7D%5C%5C%5C%5CProduct%20%5C%20of%20%5C%20roots%20%3D%20%5Cdfrac%7B-4%7D%7B6%7D%3D%5Cdfrac%7B-2%7D%7B3%7D)
Answer:
0.8r
Step-by-step explanation:
r - 0.2r
= 1r - 0.2r ← factor out r from each term
= r(1 - 0.2)
= r × 0.8
= 0.8r
So it is really easy to solve firstly we can see how much does the first 10 boxes make which makes around 55$ obviously. Secondly 45$ for the next 10 boxes.
So for now we can simply calculate that we have spent around 100$ which means 20 boxes. The remaining money left is 77$ so we can buy 77/3.5 = 22 only 22 boxes with that money. Hence a total of 42 boxes.
Hello there!
Scientific notation is when the number is between 0 and 10 times 10 to a power.
In this case we'd get 2.4 x

.
Hope This Helps You!Good Luck :)