Shouldnt it be 1/6 because it has six sides
set up the equation 4x + 21 = x^2. getting everything on one side so you have x^2-4x-21= 0. find two numbers that multiply to -21 and add to -4, which are 3 and -7. substitute in with them as x to get x^2+3x-7x+21 = 0. factor out the x and the 7 to get x(x+3)-7(x+3) = 21. so x = -3 and 7. the positive solution would be 7.
4% of 25 is 1 so we know it is only a bit more than 25 dollars for the original dinner. 4% of 30 is 1.2 so we know we are close. If we go a little higher, to 31, it is 1.24, and calculating 4% of 32 is 1.28, too much. We could try 31.5, but that is 1.26, too much. Trying with 31.25 gets us to 1.25. This is the right answer but we still need a tip. So we take the decimal point in 32.50, the total bill, and move it one place to the left, giving us 3.25, which is 10% of the bill. However, we need 20% so we should multiply 3.25 by 2, which is 6.50. 6.50 is the tip, so we should add that to the cost. This is 32.50+6.50, or $39.00. All in all, Hannah's meal cost 39 dollars.
Answer:
X=
Step-by-step explanation:
x-1= 4x+3x+x-8
x-1 = 8x-8
shift places
8-1= 8x-x
7x = 7
X=7/7
X=1
I think so
