We can solve this problem using a method called substitution.
We will use two variables-x for the Type A and y for the Type B.
We already know that a total of 153 pounds was used. We will represent this using the equation x+y=153.
We also know that the Type A costs 5.80/pound, and the Type B costs 4.75. The total cost is 796.05.
We will use the equation 5.8x+4.75y=796.05.
We now have our two equations:
x+y=153
5.8x+4.75y=796.05
Next, we will use the first equation to isolate one of the variables. Let's isolate x.
We will isolate x by subtracting y from both sides of the equation.
We now have:
x=153-y
We will now plug this in for x in the second equation.
5.8(153-y)+4.75y=796.05
We get rid of the parentheses using the Distributive Property.
887.4-5.8y+4.75y=796.05
887.4-1.05y=796.05
-1.05y=-91.35
y=87
We now use this to solve for x.
5.8x+4.75y=796.05
5.8x+413.25=796.05
5.8x=382.8
x=66
Type A=66
Type B=87
Hope this helped!
15x - y = - 6.....15x + 6 = y...so we sub in 15x + 6 in for y on the other equation
5x - 3y = -13
5x - 3(15x + 6) = -13 <== the new equation
I think that the answer is D
The correct answer is 0.5 as a decimal as a fraction it is 5/10 = 1/2 so it is what ever one u need 1/2 or 5/10 or 0.5. Hope this helps! ;D
Answer:
What is the area?
Step-by-step explanation:
