Please help! I’ll give brainliest

Describe in words the meaning of each math expression.

f(-7) = 12

Answer:

f⁻¹(x) = x+2 / 3

Step-by-step explanation:

Given function is:

f(x) = 3x-2

We have to find the inverse of the given function.

Put y = f(x)  in given function, we have

y =3x-2

Adding 2 to both sides of the above equation we have

y+2 = 3x-2+2

y+2 = 3x

Dividing by 3 to both sides of the above equation, we have

y+2 / 3 = 3x / 3

y+2 / 3 = x

Put x = f⁻¹(y) in the above equation we have

y+2 / 3 = f⁻¹(y)

Swapping equation we have

f⁻¹(y) = y+2 / 3

Replace y with x we have

f⁻¹(x) = x+2 / 3   which is the answer.

Answer:

9

Step-by-step explanation:

20 divided by 5 is 4 plus 5 is 9

Using an arithmetic sequence, it is found that you would need to do 32 subtractions

In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.

The nth term of an arithmetic sequence is given by:

[tex]a_n = a_1 + (n - 1)d[/tex]

In which [tex]a_1[/tex] is the first term.

In this problem:

Then:

[tex]a_n = a_1 + (n - 1)d[/tex]

[tex]a_n = 100 - 3(n - 1)[/tex]

[tex]a_n = 103 - 3n[/tex]

To get a single-digit number, we need that:

[tex]a_n \leq 9[/tex]

Hence, solving the inequality:

[tex]103 - 3n \leq 9[/tex]

[tex]-3n \leq -94[/tex]

[tex]3n \geq 94[/tex]

[tex]n \geq \frac{94}{3}[/tex]

[tex]n \geq 31.3[/tex]

Rounding up, 32 subtractions need to be done.

A similar problem is given at https://brainly.com/question/23842987

Answer:

The length of the rectangle is 6 centimeters

Step-by-step explanation:

The perimeter of a rectangle =

P = 2L + 2W

A rectangle has a perimeter of 38+x centimeters. The rectangle has a length of 3x−2 centimeters and a width of x centimeters.

Hence:

38 + x = 2(3x - 2) + 2(x)

38 + x = 6x - 4 + 2x

Collect like terms

38 + 4 = 6x + 2x - x

42 = 7x

x = 42/7

x = 6 centimeters

The length of the rectangle is 6 centimeters

Answer:

Vamos a definir:

100% probabilidad de lluvia = Es seguro que ese día va a llover.

0% probabilidad de lluvia = Es seguro que ese día no va a llover.

Ahora, los valores intermedios admiten una dualidad, es decir, es posible que llueva o que no.

Particularmente en el caso del 70% significa que:

Si tenemos un dado de 10 caras, con los números {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

Y lo tiráramos, los resultados {1, 2, 3, 4, 5, 6, 7} indicarían que llueve.

Los resultados {8, 9, 10} indicarían que no llueve.

Entonces es mas probable que llueva, pero la probabilidad de que no llueva no es despreciable.

Answer:

c

Step-by-step explanation:that is the answer

are her sales 1525 or this that her pay?

Answer:

[tex]P=\dfrac{n}{n+12}[/tex]

Step-by-step explanation:

Number of non-fiction books = n

Number of fiction books = 12

We need to find the probability of selecting a nonfiction book, in terms of n.

Total no of books = non-fiction books + fiction books

= n+12

Probability = favourable outcomes/total no of outcomes

Here, favourable outcomes = n

So,

[tex]P=\dfrac{n}{n+12}[/tex]

Hence, the probability of selecting a non-fiction is [tex]\dfrac{n}{n+12}[/tex].

Answer:

the top right is 18 and the bottom middle is  5 there are 18 apples in a group that has 10 pears.

Step-by-step explanation:

ratio

Answer:

Step-by-step explanation:

The formula for solving this is

P=mgh

M=80kg

h=15m

g=9.8 (acceleration due to gravity constant)

P=?

Then we should substitute our values

P=80×9.8×15

Potential energy=11760

Answer:

Does this help?

Step-by-step explanation:

Answer:

2x - y = -8

:)

Answer:

8.1 miles

Step-by-step explanation:

You have to divide

Answer:30 is the right answer

Step-by-step explanation:

Answer:

2: option four

3: option four

Step-by-step explanation:

they are both option four

Answer:

11

Step-by-step explanation:

its number 2

Answer:

variable or scalar is a storage location paired with an associated symbolic name, which contains some known or unknown quantity of information referred to a

Answer:

All of them would be under $65

Answer:

D

Step-by-step explanation:

Answer:

The Answer Is -7 Zuidplaspolder

Step-by-step explanation:

Answer:

im sure its 7 no cap

Step-by-step explanation:

Answer:

39

Step-by-step explanation:

In words, Elise's statement can be expressed as follows:

(x-13)(-7) = -182

where x is the number. Working it out you get:

x-13 = 26

x=39

Answer:

39

Step-by-step explanation:

let's use 26 as x

26-13=13*-7=-182

-182 /-7= 26

26+13=39

First Answer:

the slope of the line is 2.

following the equation

m = rise/run

The rise is 4 and the run is 2

4/2 = 2

Answer:

m=-2

Step-by-step explanation:

Since the line is sloping down, we know the slope is negative. To find the slope count the number of units up/down and the number of units over. In this case, pick any 2 points the line crosses through and think:

"down 4, over 2".

-4/2

-2

HTH :)

Answer:

She has identified her good side and is trying to let it show.

Step-by-step explanation:

I did this already so I know it right.

Answer:

She has identified her good side and is trying to let it show.

Step-by-step explanation:

Haha, I just finished this assignment.

Answer:

3x^4 + 7x^2y^2 + 2y^4

Step-by-step explanation:

(3x^2 + y^2) (x^2 + 2y^2)

3x^4 + 6x^2y^2 + x^2y^2 + 2y^4

3x^4 + 7x^2y^2 + 2y^4

-TheUnknownScientist

Answer:

f(3)=1

It is correct

Given:

A Hudson Valley farmer has 26 employees.

Salary of each employee = $410 per week.

Remaining amount after one week = $126

To find:

The initial amount of money he begins with.

Solution:

We have,

Amount he pays to one employee in one week = $410

Amount he pays to 26 employee in one week = 26 × $410

                                                                             = $10660

Let x be the initial amount of money he begins with.

Remaining amount = Initial amount - Amount he pays to 26 employee in one week

[tex]126=x-10660[/tex]

[tex]126+10660=x[/tex]

[tex]10786=x[/tex]

Therefore, the initial amount of money he begins with is $10786.

Answer:

y=

2

1

​

x−7

Step-by-step explanation:

uii

Answer:

y=1/2x-7

I know it because the guy who typed the other answer was a idiot

Answer:

1hr 30mins

Step-by-step explanation:

if u do

3:30-4:30 its 1 hr

4:40-5:00 is half an hour (30mins)