In my number the digit in the ones place is doubled the digit in the tens place the sum of the digit is three what is my number

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2

Given right triangle abc, what is the value of tan(a)?