SparklingWater2

Because it is a hexagon, we know there are 540 degrees total. so 540-135-112-88-90=y, simplifying to $y=\boxed{115}$

If he invested 4.5 times more in stocks as he did in bonds, that means that the total amount of money invested is divisible by 5.5, and the ratio of stocks to bonds is 4.5:1, so the amount of money invested in stocks is 2/11 of the total amount, so we divide by 11 and multiply by 2 which is 15000x2=$\boxed{30000}$

a can be either 3 or 4, and b can be 4 or 3.

Because we know that the sum of all 3 angles of a triangle is 180, and angle of a striaght line is 180, we know that the missing angle that is not h is 180-148=32, and because the sum of the 3 angles inside a triangle is 180, we know that 32+56+h=180, and simplifying, we have $h=92^\circ$

Thanks, you too!

if the mean and the median are the same, that means that the middle number and 20+x+y/5 are the same, and because the median has to be a whole number, then 20+x+y/5 has to be a whole number as well, so x+y is a multiple of 5. (from here I guessed because there are limited answers) I got 7as x and 8 as y.

We will need to see the picture of the two rectangular prisms please.

because both sides of the ratio increased by 1 after we added 5 to both sides, that means the ratio is simplified by 5. so, to find out how many are in the bag after you add more, you simply multiply by 5. This means you have 20 red marbles after you added more marbles.

We can say that 49A+7B+C=121C+11B+A. We can expand into 48A=120C+4B or 12A=30C+B or B=12A-30C. from here, I just guessed and got 502 base 7 and 205 base 11, and 247 base 10.

d=123-55=68

c=180-123=57

b=180-68=112

a=180-(68+57)=55