Justin case has four times as many dimes as he has nickels in his pocket. If the total value of the change is $2.70 how many of each coin does he have? ( HELP PLEASE)

Given the statements, "a square root of 16 is 4," and "a square root of 9 is -3," complete the following blanks with the correct truth-values. p is and q is , so the statement, "a square root of 16 is 4 or a square root of 9 is -3" is .

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.