Answer:
8
Step-by-step explanation:
(10)^2 - (6)^2 = 64
Square root 64 = 8
Answer:
f(-2) = 90
Step-by-step explanation:
Plugging in the value of f(x) into the equation:
f(-2) = 5(-2)3^(-2)
f(-2) = 5(-2)(-9) - evaluate the power first
f(-2) = 90 - multiply from left to right to obtain answer
Answer:
a
Step-by-step explanation:
a. a number is divisible by 3 if the sum of its dígits is divisible by 3
2+8+3+8=21
<em>21 is divisible by 3 (3*7=21), then 2838 is divisible by 3 too.</em>
b. a number is divisible by 9 if the sum of its dígits is divisible by 9
2+8+3+8=21
<em>21 isn't divisible by 9 (2*9=18 and 3*9=27), then 2838 is not divisible by 9.</em>
c. a number is divisible by 4 if the number formed by its too last dígits is divisible by 4.
<em>38 isn't divisible by 4 (4*9=36 and 4*10=40), then 2838 is not divisible by 4.</em>
I don’t even know how to answer this, could you give more context?
The answer is not a whole number depending on what the question allows as an answer it could be 6 remainder 6 or 6.4 as a decimal.