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BlackZzzverrR [31]
3 years ago
11

How to slove 4x+15=-4x+10

Mathematics
2 answers:
sdas [7]3 years ago
8 0
       4x + 15 = -4x + 10
  +4x   -15     +4x  -15
___________________
8x  =  -5
---      ----
8         8

x  =  -0.625
insens350 [35]3 years ago
6 0
The 4x's get eliminated because they are opposite. So just add 10+15= 25
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What is the average rate of change of f over the interval -7 < or equal to x Give an exact number
Annette [7]

Answer:

\frac{4}{3}

Step-by-step explanation:

The average rate of change can be found by using the following formula

\frac{f(x_{2}) - f(x_{1}) }{x_{2} - x_{1}}

Since the interval goes from -7 to 2, we should find the y-values that correspond to x=-7 and x=2.

By inspection of the graph, we can clearly see that when x is -7, y is -7 as well and when x is 2, y is 5.

Now that we know this, we can simply plug these values into the formula!

\frac{f(2) - f(-7) }{2 - (-7)} = \frac{5 - (-7)}{2 - (-7)} = \frac{5 +7}{2+7} = \frac{12}{9} = \frac{4}{3}

Good luck!

3 0
3 years ago
Write the equation in standard form.<br> y = 7x + 2/3
Step2247 [10]

Answer:

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3 years ago
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schepotkina [342]

Answer:

6

Step-by-step explanation:

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3 years ago
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When 5 times a number is added to 45 the answer is the sm of 85 and 140 what is the number
zimovet [89]

Hello.

First, let the number be r.

5 times r is written like this:

\rm{5r}

Now, add 45:

\mathrm{5r+45}

Now, the sum of 5r+45 is equal to the sum of 85 and 140:

\mathrm{5r+45=85+140}

In order to solve this equation, we need to add 85 and 140:

\mathrm{5r+45=225}

Now, subtract 45 from both sides:

\mathrm{5r+45-45=225-45}

\mathrm{5r=225-45}

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The last step is to divide both sides by 5:

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Therefore, the answer is

\rm{r=36}

I hope it helps.

Have a nice day.

\boxed{imperturbability}

8 0
3 years ago
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soldier1979 [14.2K]

Answer:

they never intersect

Step-by-step explanation:

parallel lines are basically two lines that are always the same distance apart and traveling in the same direction at each other.

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