Answer: 25 pounds.
Step-by-step explanation:
Let <em>x</em> represent the number of pounds of seeds that worth 80¢.
Let <em>y </em> represent the number of pounds of seeds that worth 50¢.
Based on the information given in the problem, you can set up the following system of equations:

Apply the method of elimination:
- Multiply the first equation by -50
- Add both equations.
- Solve for x.
Then:

Therefore, the answer is: 25 pounds of 80 cent seed should be use.
Answer: 20 oranges and 5 mangoes
Step-by-step explanation:
Define the following:
x = number of oranges
y = number of mangoes
Make the following system of equations:
x + y = 25
0.35x + 1.00y = 12.00
Solve for x:
y = 25 - x
⇒ 0.35x + 1.00(25 - x) = 12.00
⇒ 0.35x + 25 - x = 12.00
⇒ -0.65x = -13.00
⇒ x = 20
Solve for y:
20 + y = 25
y = 5
∴ 20 oranges and 5 mangoes were purchased.
B) 6
area of square = s^2
s^2 = 36
s = 6
Answer:
last option is the answer
Step-by-step explanation:
x-10<=-13
x<=-3
so
last option is the correct answer.
Answer:
69
Step-by-step explanation: