Rodrigo practiced playing guitar 15 1/3 hours over the past 3 weeks he practiced for 6 1/4 hours during the first week and 4 2/3 hours during the second week how much time did rodrigo spend practicing during the third week

We want to know how much time was spent practicing the guitar in week #3. We know the time in week #1 and week #2 and the total time. So, the amount of time in week #1 and week # 2 and week #3 will equal the total time. In a math sentence with all the practice times,

week 1 + week 2 + week 3 = total

? here represents what you don't know - and you could (if this were an algebra class) make that x. Our goal is to get the ? thing alone on one side and all the stuff on the other side.

by getting common demonimators. The lowest common denominator, or LCD, is 12.

by combining fraction parts with fraction parts and whole numbers with whole numbers

by subtracting by rewriting and borrowing from the whole number column and one being twelve over twelve.

by subtracting whole numbers from whole numbers and fractions from fractions

Therefore, he spent hours practicing.

step-by-step explanation:

which of the following statements correctly describes the expression below based on its degree and number of terms?

314 - 7x2 + 11

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13