Time on floor one+time on floor two=55
55/2=time on each floor
55-time on floor one=time on floor two
Answer:
27 ounces
Step-by-step explanation:
Answer:
195 mL of the 90% solution
Step-by-step explanation:
Let the number of mL of 90% mixture = x
Hence, our equation is
780mL × 15% + x mL × 90% = (780mL + x) 30%
117 + 0.9x = 234 + 0.3x
Collect like terms
0.9x - 0.3x = 234 - 117
0.6x = 117
x = 117/0.6
x = 195 mL
Therefore, You will need 195 mL of the 90% solution
Answer:
The ordered pair is a solution
Step-by-step explanation:
5x - 4y > 20
Our point is (5,0) in the format of (x, y)
This makes 5 equal to "x", and 0 equal to "y"
Now you plug it in
5(5) - 4(0) > 20
Now multiply/simplify
25 - 0 > 20
25 > 20
This statement is true, meaning the ordered pair is a solution to the equation.
The answer to the problem is x > 5