54x^2+208x-308=-2x-8
54x^2+208x-308+2x+8=0
54x^2+210x-300=0
9x^2+35x-50=0 (divided both sides by 6)
9x^2+45x-10x-50=0 (wrote the 35x as a difference)
9x(x+5)-10(x+5)=0
(9x-10)(x+5)=0
Now solve the equations:
9x-10=0
x=10/9
x+5=0
x=-5
Therefore, x has two solutions, 10/9 and -5!!
Answer:
1820 ways
Explanation:
Use combination method. where order does not matter.
: combination formula
Solve:
Answer:
A
Step-by-step explanation:
Let's set up two ratios...
1 cm : 5km
8 cm : x km
Therefore the answer is A
Answer:
The function best describe the linear relationship be y = 640 - 75x.
Step-by-step explanation:
As given
Wanda has $640 in her checking account.
She pays her landlord $75 per week for rent.
Let us assume that the number of weeks be x.
Let us assume that the y reresented the money in the account after x weeks.
Than the function becomes
y = 640 - 75x
Therefore the function best describe the linear relationship be y = 640 - 75x.
Answer:
Step-by-step explanation:
%decrease is given by = decrease/actual value ×100
Then in this case
The value decrease from 180,000 to 165,000
Then, the decrease is 180,000-165000=15,000
The actual value was 180,000
Then %decrease = decrease/ actual value × 100
%decrease= 15,000/180,000×100
%decrease=8.33%
Decrease = 8.33%