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stiks02 [169]
4 years ago
12

Solve 2x + 5 = 12 please help !

Mathematics
2 answers:
Lady_Fox [76]4 years ago
8 0
The correct answer is x=3.5
Volgvan4 years ago
5 0

Answer: x = 3.5

Step-by-step explanation:

We can start by subtracting 5 from both sides:

2x - 5 = 12 - 5      Which will come out to: 2x = 7

Then we divide both sides by 2 so that we can isolate the variable:

2x/2 = 7/2       Which will come out to: x = 3.5

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Why does it not make sense to graph f and f−1 on the same set of axes?
babymother [125]

Here you have two graphs, one -- graph of the function y=f(x) on the coordinate plane with axes x and y, another -- graph of the function x=f^{-1}(y) on the coordinate plane with axes y and x.

Actually, these graphs are graphs of the same function, only axes are changed.

It makes the sense to graph to functions  f(x) and f^{-1}(x) on the same set of axes, not graphs of the same function y=f(x) and x=f^{-1}(y) on the different set of axes.

4 0
3 years ago
What percent represents the part of the model shaded green
Mariulka [41]
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8 0
3 years ago
(w+3/w+4)=(w-1/w+7)+1
RoseWind [281]
I hope this helps you

5 0
3 years ago
Solve the equation for y and explain.<br><br> 2y + 2(y - 2) = 5y - 3(y - 10)
Sloan [31]
2y + 2(y-2) = 5y - 3(y-10)
2y + 2y - 4 = 5y -3y +30
4y - 4 = 2y + 30
4y - 2y = 30 + 4
2y = 34
y = 34/2
y = 17
8 0
3 years ago
How many positive three-digit integers have the hundreds digit equal to 7 and the units (ones) digit equal to 1?
Lina20 [59]

Using the Fundamental Counting Theorem, it is found that there are 10 positive three-digit integers have the hundreds digit equal to 7 and the units (ones) digit equal to 1.

<h3>What is the Fundamental Counting Theorem?</h3>

It is a theorem that states that if there are n things, each with n_1, n_2, \cdots, n_n ways to be done, each thing independent of the other, the number of ways they can be done is:

N = n_1 \times n_2 \times \cdots \times n_n

The number of options for each selection are given as follows, considering there are 10 possible digits, and that the last two are fixed at 7 and 1, respectively:

n_1 = 10, n_2 = n_3 = 1

Hence, the number of integers is given by:

N = 10 x 1 x 1 = 10.

More can be learned about the Fundamental Counting Theorem at brainly.com/question/24314866

#SPJ1

7 0
2 years ago
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