Answer:
$215.26
Step-by-step explanation:
717.53*30%= $215.26
Answer:
f^-1 (x) = √
6x/6 - √
6x/6
Step-by-step explanation:
interchange the variables and solve for y.
sorry its a little hard to read i didnt have all the symbols on my keyboard
(x-9)²=-3+x
expand
x²-18x+81=-3+x
minus x both sides and add 3
x²-19x+84=0
factor
what 2 numbers multiply to get 84 and add to get -19?
-7 and -12
(x-7)(x-12)=0
set equal to 0
x-7=0
x=7
x-12=0
x=12
the number is 7 or 12
both work
Answer:
35:14
Step-by-step explanation:
The ratio is 5:2.
The smaller number is 14, which replaces the 2. First, find the factor you used to get to 14. To do so, divide 14 by the smaller ratio number, 2:
14/2 = 7
Now, multiply 7 to the other side of the ratio:
5 x 7 = 35
If 5:2 ∴ 35:14
35:14 is your ratio.
~
Answer:
rule: f(n) = n³
missing numbers: 125, 216, 343, 512, 729
Step-by-step explanation:
Your familiarity with the cubes of small integers helps you recognize each of these numbers is a cube. Their sequence is the sequence of cubes of increasing natural numbers.
1 = 1·1·1 = 1³
8 = 2·2·2 = 2³
27 = 3·3·3 = 3³
64 = 4·4·4 = 4³
__
The rule is ...
f(n) = n³
The cubes of 5 through 9 will complete the set of numbers ...
1, 8, 27, 64, 125, 216, 343, 512, 729