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jolli1 [7]
4 years ago
5

If the sum of a number and six is doubled, the result is eight less than the number

Mathematics
1 answer:
LekaFEV [45]4 years ago
8 0
(x+6)2 = x - 8
give me one moment
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Plz help!! I do not know the answer?
Anna007 [38]

Answer:

the last one

Step-by-step explanation:

if you look and line it up correctly you can see that they go together

7 0
3 years ago
Which function below is the inverse of f(x)= 7x-1/2
lianna [129]

f(x)=7x-\dfrac{1}{2}\to y=7x-\dfrac{1}{2}\\\\\text{we change x to y and y to x}\\\\x=7y-\dfrac{1}{2}\\\\\text{solve for y}\\\\7y-\dfrac{1}{2}=x\ \ \ \ |+\dfrac{1}{2}\\\\7y=x+\dfrac{1}{2}\ \ \ \ \ |:7\\\\\boxed{y=\dfrac{1}{7}x+\dfrac{1}{14}}\\\\Answer:\ \boxed{f^{-1}(x)=\dfrac{1}{7}x+\dfrac{1}{14}}

8 0
3 years ago
What’s the rule it’s algebra 1
monitta

Answer:

An algebraic rule is a mathematical expression that relates two variables and is written in the form of an equation. There are many constant algebraic rules, such as area = length x width. You can also create your own rule when given a set of variables

Step-by-step explanation:

7 0
4 years ago
Ok, I am so sorry ,I rlly don't understand any of these things , can y'all help me with
melomori [17]

Answer:

x is 2.88 which can be rounded up to 2.9

Step-by-step explanation:

Subtract 2/3x from 5x.

Add 1/2 to 12.

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3 0
3 years ago
If the cube above has a surface area of 54cm^3, what is the volume of the cube?
Colt1911 [192]

9514 1404 393

Answer:

  27 cm³

Step-by-step explanation:

The surface area of a cube is ...

  SA = 6s²

Then the edge length is ...

  54 cm² = 6s² . . . . . please note that cm³ is not the appropriate unit for area

  9 cm² = s² . . . . . .divide by 6

  3 cm = s . . . . . . . take the square root

The volume of a cube is ...

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The volume of the cube is 27 cm³.

3 0
3 years ago
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