Answer:
13.9 inches
Step-by-step explanation:
Let the length of diagonal of cube be d inches.

14 = 7*2
63 = 7*9
14 7 * 2 2 2
---- = ------- 7/7 =1, so = 1 * ------ = ----
63 7 * 9 9 9
Answer:
x = 3.25
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS =
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
...and is the order of operation.
First, subtract 3 from both sides of the equation:
4x + 3 = 16
4x + 3 (-3) = 16 (-3)
4x = 16 -3
4x = 13
Next, dvide 4 from both sides:
(4x)/4 = (13)/4
x = 13/4
x = 3.25
x = 3.25 is your answer.
~
Answer:
x = -2
Step-by-step explanation:
-6x + 5 = 17
First, combine the constants by subtracting 5 from each side.
-6x = 17 - 5
-6x = 12
Now you want x by itself, so divide both sides by -6.
x = -2
Check your answer by plugging x = -2 into the original equation.
-6(-2) + 5 = 17
12 + 5 = 17
17 = 17
Your answer is correct.
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