A number, y, is equal to twice the sum of a smaller number and 3. The larger number is also equal to 5 more than 3 times the smaller number. Which equations represent the situation?
2 x minus y = negative 6 and 3 x minus y = negative 5
2 x minus y = negative 3 and 3 x minus y = negative 5
2 x minus y = negative 6 and x minus 3 y = 5
2 x minus y = negative 3 and x minus 3 y = 5

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257