Answer:
The costs will be the same at 21 pounds.
Step-by-step explanation:
Let p be the number of additional pounds. (Total weight would be p+1).
UPS cost = 7 + 0.20p
FedEx cost = 5 + 0.30p
We need these to be equal.
7 + 0.20p = 5 + 0.30p
0.10p = 2
p = 20
5x - 5y > = 70...subtract 5x from both sides
-5y > = -5x + 70...divide by -5 on both sides, and change the inequality sign
y < = x - 14 <===
Answer:
180
Step-by-step explanation:
180 because it is obtuse
35 ?? All I remember is that you have to add the perimeter is the easiest to find
2x - y = -24
x + 7y = 3
Solve one equation for a variable and plug the resulting value into the second equation.
x + 7y = 3 Subtract 7y from both sides
x = -7y + 3
Now, plug that x-value into the x of the first equation.
2x - y = -24 Plug in the x-value
2(-7y + 3) - y = 24 Use the Distributive Property
-14y + 6 - y = -24 Combine like terms (-14y and -y)
-15y + 6 = -24 Subtract 6 from both sides
-15y = -30 Divide both sides by 15
y = 2
Next, plug the y-value back into the second equation.
x + 7y = 3 Plug in the y-value
x + 7(2) = 3 Multiply
x + 14 = 3 Subtract 14 from both sides
x = -11
y = 2 and x = -11
