Given the expression: 5th + 6b + 7c. sendo a = 1, b = c = -7 and 10.what the numerical value of the given expressõa?

Which expression is equivalent to 2x^2+7x+4?

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Charlie tosses five coins.what is the probability that all five coins will land tails up.