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Katarina [22]
3 years ago
13

Can anyone help out with these two questions?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0
To find f(3), plug x = 3 in f(x),
∴ f(3) = 3(3)+1 = 9+1 = 10
Therefore, the ordered pair is (3,10)

For second one,
plug x = 10 in f⁻¹(x), 

f⁻¹(10) = 10-1/3 = 9/3 = 3

Therefore, the ordered pair is (10,3)
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Please help me out please
Marrrta [24]

Answer:

7x

On my opinion may be its 7x because don't know whats the answer just i want to help you if its wrong then plz sorry

7 0
3 years ago
Find the mean median of each data set.
joja [24]
Median 72.5
Mean is 76
8 0
2 years ago
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
Leokris [45]

Answer: The value of y is 39.6 when x = 11 and the required expression is y(11) = 39.6

Step-by-step explanation:

Since we have given that

y varies directly as x.

If y = 18, when x = 5.

So, we need to find the value of y when x is 11.

According to question, we get that

\dfrac{y}{x}=\dfrac{18}{5}=\dfrac{y}{11}\\\\18\times 11=5y\\\\198=5y\\\\\dfrac{198}{5}=y\\\\y=39.6

Hence, the value of y is 39.6 when x = 11 and the required expression is y(11) = 39.6

5 0
3 years ago
Find the area Select the best answer from the choices posted
Sliva [168]

Answer:

B) 42

Step-by-step explanation:

Area  = \frac{1}{2} b h

Area  =  \frac{1}{2} x 12 x7

Area = 42

5 0
2 years ago
Is -28 greater than or less than -162
vivado [14]

Answer:

Any number which is on left side on the line number is less than the number which is on right hand side relative to that number.

As -28 is on the right hand side of the line number, and -162 is heading towards left hand side relative to -28.

Therefore, -28 is greater than -162.

Step-by-step explanation:

To determine:

Is -28 greater than or less than -162?

Solution Steps:

  • In mathematics, a number line is considered to be a straight line with numbers placed at equal intervals along its length.
  • A number line could be extended infinitely in any direction i..e -∞ to +∞.
  • A number is usually represented horizontally.

Any number which is on left side on the line number is less than the number which is on right hand side relative to that number.

As -28 is on the right hand side of the line number, and -162 is heading towards left hand side relative to -28.

Therefore, -28 is greater than -162.

In other words,

-28>-162\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:\mathrm{True\:for\:all}\:x\:\\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}

Keywords: number line, less than, greater than

Learn more about number line from brainly.com/question/12153324

#learnwithBrainly

7 0
3 years ago
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