Alex and Charlene are playing a card game, where each card has a value. After Alex doubles his total cards value, he has a total of −16.5 points. What was his cards value before he doubled it

Help i dont understand

Write a ratio as a fraction in simplest form 9ft to 15 yd

Alexander correctly and said 44 out of 50 questions on his geography test. What percent of the questions did he answer incorrectly? Express your answer as a present and as a decimal

For the equations given below, which statement is true?-3x-8=19
-3x-2=25
A. The equations have the same solution because the second equation can be obtained by subtracting 6 from both sides of the first equation.
B. The equations have the same solution because the second equation can be obtained by adding 6 to both sides of the first equation.
C. The equations have the same solution because the second equation can be obtained by subtracting 19 from both sides of the first equation.
OD. The equations do not have the same solution because the second equation can be obtained by adding 6 to both sides of the first equation.

LEIM deposits some money in an account which pays 5% simple interest per year, and twice that amount in an account paying 4% simple interest per year. If he collects $533.00 in interest after one year, how much did he deposit in the account that has a 5% rate?

Given that the first term is LaTeX: t_1=2t 1 = 2, and the recursive definition is LaTeX: t_{n+1}=3^{\left(t_n\right)}t n + 1 = 3 ( t n ), what would be the 2nd term (LaTeX: t_2t 2).