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Fudgin [204]
2 years ago
12

Please help me 2x-7/8+x=2x+7/2+5

Mathematics
1 answer:
Elina [12.6K]2 years ago
8 0

Answer:

x = \frac{75}{8}

Step-by-step explanation:

So we have this:

2x - \frac{7}{8} + x = 2x + \frac{7}{2} + 5

First, let's combine like terms:

3x - \frac{7}{8} = 2x + \frac{7}{2} + \frac{10}{2} \\3x - \frac{7}{8} = 2x + \frac{17}{2}

Next, let's move variables and numbers each onto their own sides to get our answer:

3x - \frac{7}{8} + \frac{7}{8}  = 2x + \frac{17}{2} + \frac{7}{8}\\ 3x = 2x + \frac{75}{8} \\3x - 2x = 2x + \frac{75}{8} - 2x\\\ x = \frac{75}{8}

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Answer:

24 cherries

Step-by-step explanation:

18 is 75% of the original amount, meaning 25% will be 6 cherries.

So, 18 + 6 = 24, the original amount

4 0
3 years ago
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For the equation below, x is the input and y is the output. y = -4x + 3 If the input is -8, then the output is
KonstantinChe [14]

Answer:

35

Step-by-step explanation:

If is given the value -8 as it is the input then -->

y = -4(-8) + 3

Negative four times negative 8 is positive 32 so

y= 32 + 3

And 32 plus 3 is 35


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3 years ago
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F (x) =2x -4; find f (-4)
NemiM [27]

Answer:

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Step-by-step explanation:

f(x)=2x-4

To calculate f(-4), we need to substitute x in our equation above with -4:

f(x)=2x-4\\f(-4) = 2*(-4) - 4\\f(-4) = -8-4 = -12

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Answer: f(-4) = -12

6 0
3 years ago
Give the answer please
Nataliya [291]

The inverse of a function is given as √x - 1

<h3>Inverse of a function</h3>

To get the inverse of any function f(x) we need to ensure that it passes the horizontal line test.

Given the following function

f(x) = (x+1)^2

Let y= f(x) to have:

y = (x+1)^2

Replace y with x to have:

x = (y+1)^2

Make y the subject of the formula

√x =y + 1

Subtract 1 from both sides

√x - 1 = y

Swap

y = √x - 1

Hence the inverse of a function is given as √x - 1

Learn more on inverse of a function here: brainly.com/question/3831584

#SPJ1

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