20% off means you paid only 80% of the original price.
0.8x=40
x=40÷0.8=50
so the original price is 50
Answer:
The slope should be 8 1/3 which is also 25/3
Step-by-step explanation:
Answer:
(a - b)^2 = 49 - 4b^2 +2ab
Step-by-step explanation:
Given: a^2 + b^2 = 7b (assuming A is really “a”)
b^2 + (2b - a)^2 = 7^2
Find; (a - b)^2
Plan: Use Algebraic Manipulation
Start with b^2 + (2b - a)^2 = 7^2 =>
b^2 + 4b^2 - 4ab + a^2 = 49 by expanding the binomial.
a^2 + b^2 + 4b^2 - 4ab = 49 rearranging terms
a^2 + b^2 -2ab - 2ab + 4b^2 = 49 =>
a^2 - 2ab + b^2 = 49 - 4b^2 +2ab rearranging and subtracting 4b^2 and adding 2ab to both sides of the equation and by factoring a^2 - 2ab + b^2
(a - b)^2 = 49 - 4b^2 +2ab
Double Check: recalculated ✅ ✅
(a - b)^2 = 49 - 4b^2 +2ab
Answer:
The answer is $6.99 in tax, the new total is $239.99
Step-by-step explanation:
To figure out how much tax she is paying, multiply the dollar amount by the decimal form of the percent. In this case, you will be multiplying 233 by 0.3.
233 x 0.3 = 6.99
Now add that amount to the original price to get your new price like this:
233 + 6.99 = 239.99
Answer:
86.7cm
Step-by-step explanation:
((5.95x5.1)/2)x4=60.69
5.1x5.1+60.69=86.7cm
good luck!
