Ihave between 30 and 50 pennies. when i put them in piles of 5 there is still one left over. when put them in piles of 4s, i have one penny left over. how many pennies do i have?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Average acceleration: i have no idea how to do this.

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)