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Nitella [24]
2 years ago
6

What is the inverse of the function f(x) = 2x + 1?

Mathematics
1 answer:
mamaluj [8]2 years ago
6 0

Answer: y=(x-1)/2

Step-by-step explanation:

To find the inverse, you want to switch the y with x and x with y. Then, you solve.

y=2x+1                 [switch y with x and x with y]

x=2y+1                 [subtract both sides by 1]

x-1=2y                  [divide both sides by 2]

(x-1)/2=y

Now, we know that y=(x-1)/2 is the inverse.

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How do i solve <br> 3n= 3.6
quester [9]

Answer:

n = 1.2

Step-by-step explanation:

3n = 3.6

Divide both sides by 3 to get n by itself.

3.6/3 = 1.2

n = 1.2

5 0
2 years ago
Read 2 more answers
100 is what percent of 250?
alisha [4.7K]

Answer:

100 is 40% of 250

Step-by-step explanation:

1. We assume, that the number 250 is 100% - because it's the output value of the task.  

2. We assume, that x is the value we are looking for.  

3. If 100% equals 250, so we can write it down as 100%=250.  

4. We know, that x% equals 100 of the output value, so we can write it down as x%=100.  

5. Now we have two simple equations:

1) 100%=250

2) x%=100

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=250/100

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 100 is what percent of 250

100%/x%=250/100

(100/x)*x=(250/100)*x       - we multiply both sides of the equation by x

100=2.5*x       - we divide both sides of the equation by (2.5) to get x

100/2.5=x  

40=x  

x=40

now we have:  

100 is 40% of 250

6 0
3 years ago
Read 2 more answers
* WILL GIVE BRAINIEST*
k0ka [10]

Answer:

B: 280

Step-by-step explanation:

The regression line predicts that when x equals 5:

log_{10}(y) = 2.447

In order to find the value for y, one must simply apply the following logarithmic property:

if : log_{b}(a) = c

then: b^c = a

Applying it to this particular problem:

log_{10}(y) = 2.2447\\10^{2.447}= y\\y=280

Therefore, the regression line predicts y will equal 280 when x equals 5.

3 0
2 years ago
Provide an appropriate response.
oksian1 [2.3K]
You don't even have to look up the definition of 'standard deviation'.  You only
have to remember that 'smaller standard deviation' means 'less spread-out'.

First, let's find the mean (average).  It's not supposed to change:

1/7th of (65 + 71 + 77 + 80 + 82 + 90 + 96) = 561/7 = <u>80 and 1/7</u> .

Now, just pick 7 scores that total 561 and are all bunched up.

The easiest way would be 80, 80, 80, 80, 80, 80, 81 .
But that's so easy that it feels like cheating.

Let's say <u>77, 78, 79, 80, 81, 82, and 84</u> .
8 0
3 years ago
What is the volume of this box?<br> 4 in long<br> 12in high<br> 3in wide
Natali5045456 [20]

Answer:

<h2>144 in²</h2>

Step-by-step explanation:

Multiply the length, width and height to find the volume of the box

6 0
2 years ago
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