You're going to want to combine like terms first off, so 2x+3x=5x. Then you have 5x+7=-41. Now you subtract 7 from both sides, and basically undo that function so you have 5x=-48. Then you do the opposite of multiplying 5, so you divide five from both sides and get -9.6. So x=-9.6. Is that what you wanted? Because if not, ignore this.
The answer for this should be: Perimeter= x–28
The answer is 63 because you have set up the proportion 1.5 over 3 = 31.5 over x and then you cross multiply 31.5 times 3 and you get 94.5 then you divide that by 1.5 and you get 63.
I took the same test and I put the answer D. 1487 and I got it wrong. The correct answer was
A.3
Answer:
6.42$
Step-by-step explanation:
6.00 divided by 100 equals 0.6 multiplied by 7 equals 0.42 so the sales tax is 0.42 cents and the total is 6.42$
