Answer:
x=0
Step-by-step explanation:
2(3x - 1) + 2(4x + 5) = 8
Distribute
6x -2 +8x +10 =8
Combine like terms
14x +8 = 8
Subtract 8 from each side
14x+8-8=8-8
14x =0
Divide each side by 14
14x/14 = 0/14
x=0
Distribute as we get,
Remove the brackets,
Then combine,
Move +8 to the right side and change the +8 to -8 (The operator must be the opposite when move to the other side.)
Move 14 to the right side so we can find the value of x. (Because it's x multiply 14 then 0 will be divided by 14.)
Therefore, x = 0.
See the attached figure
An automated car wash can wash 120 carsin 20 hours.
In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.
Given is that an automated car wash can wash 30 cars in 5 hours.
Now, an automated car wash can wash 30 cars in 5 hours.
Then, 1 car can be washed in (5/30) hours.
So, 120 cars will take (5/30 x 120) hours
(5/30 x 120)
5 x 4
20 hours
Therefore, an automated car wash can wash 120 carsin 20 hours.
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Answer:
Geometric mean = 1/√3 or 0.58
Step-by-step explanation:
We have to find the geometric mean of the 2/3 and 1/2.
To find the geometric mean of n terms we use the formula
Geometric mean =
By putting the values in the formula
Geometric mean
geometric mean = 0.58
Answer:
0.577
Step-by-step explanation:
We are given the following two numbers and we are to find their geometric mean:
and
We know the formula for finding the geometric mean:
Geometric mean =
So putting in the given values in the above formula to get:
Geometric mean= =
Geometric mean = 0.577