Answer:
f(1) = 31.
Step-by-step explanation:
f(n + 1) = f(n) - 3
So f(4) = f(3) - 3
22 = f(3) - 3
f(3) = 22 + 3 = 25
so f(2) = 25 + 3 = 28
and f(1) = 28 + 3 = 31.
Answer:
8
Step-by-step explanation:
Let one of the multiples of 8 be 8x and the second multiple of 8 be 8(x+1). Using x and x+1 ensure that the resulting multiples are one multiple apart, or consecutive. Next, recall that these two consecutive multiples of 8 have a product of 2,688. We can thus write the equation:
.
To solve the equation, we must simplify and distribute. We can isolate the non-zero terms on one side the equation and solve the remaining quadratic equation for x:
This means that x=-7 or x=6. Using the positive result x=6 gives the multiples of 8×6 and 8(6+1) or 48 and 56. Subtract the two numbers ot find the difference is 56-48 or 8.
Look at the last digit. If the last digit is 0, then the number can be divided by 10 <span> evenly (without a remainder).</span>
False because 90 is grater right