Consider the function below.

x -1 0 1 2
f(x) -2 3 8 13

Which of the following functions could be the inverse of function f?


x -2 3 8 13
q(x) -1 0 1 2


x -2 -3 -8 -13
r(x) 1 0 -1 -2


x -1 0 1 2
p(x) 2 -3 -8 -13


x 1 0 -1 -2
s(x) -2 3 8 13

To find the number of red bricks used to build the decorative wall, we can set up a system of equations. By solving the equations, we find that all 140 bricks used were red bricks.

To find the number of red bricks used, we can set up a system of equations.

Let r represent the number of red bricks and g represent the number of grey bricks.

We know that there were 140 bricks used in total, so we can write the equation: r + g = 140.

Since we specifically want to find the number of red bricks, we can write the equation: r = 140 - g.

By substituting this expression for r in the first equation, we get: 140 - g + g = 140.

Simplifying the equation, we find that 140 - g + g = 140 - g + g = 140.

Therefore, 140 - g = 140, and solving for g, we find that g = 0.

This means that no grey bricks were used and all 140 bricks used were red bricks.

Answer:  Option 'b' is correct.

Step-by-step explanation:

Since we have given that

[tex]\frac{11}{20},\frac{1}{2},0.51[/tex]

Now, we have to arrange the set of numbers from least to greatest.

So, for this we have to make the denominator same ,

[tex]\frac{11\times 5}{20\times 5}=\frac{55}{100}[/tex]

Similarly,

[tex]\frac{1\times 50}{2\times 50}=\frac{50}{100}[/tex]

Similarly,

[tex]\frac{51}{100}[/tex]

Numbers In increasing order :

[tex]\frac{50}{100},\frac{51}{100},\frac{55}{100}\\\\\frac{1}{2},0.51,\frac{11}{20}[/tex]

Hence, Option 'b' is correct.

Answer:

-3

Step-by-step explanation:

The given expression is

[tex]-\frac{5}{6}x+7[/tex]

We need to find the value of given expression for x=12.

Substitute x=12 in the given expression.

[tex]-\frac{5}{6}(12)+7[/tex]

Cancel out the common factors.

[tex]-5\times 2+7[/tex]

After multiplication, we get

[tex]-10+7[/tex]

After subtraction, we get

[tex]-3[/tex]

Therefore, the value of given expression for x=12 is -3.

Answer:

 cos (A - B) =  cos 6 x

Step-by-step explanation:

given equation,

     = cos 8 x . cos 2 x - sin 8 x . sin 2 x

   using identity

cos (A - B)  = cos (A) . cos(B) -  sin (A) . sin(B)...................(1)

cos 8 x . cos 2 x - sin 8 x . sin 2 x......................................(2)

comparing both the equation (1) and (2)

we get ,

A = 8 x         B = 2 x

hence, from the above identity we can see that

cos (A - B)  = cos (8 x - 2 x)

 cos (A - B) =  cos 6 x

Answer:50 in 1.5 hours.

Step-by-step explanation:

If Joan can do 50 in 3 hours, then in 1 hour, that’s 50/3.  

Jill completes the rest of the 50, so 50-(50/3) is how many letters Jill can type in an hour.  

50-(50/3)=(150/3)-(50/3)=100/3 letters in an hour. If Jill can write 100 letters in 3 hours, then she can write 50 in 1.5 hours.

Sample Response:: If the square root is not a perfect square, then an approximation of the root often makes more sense in the context of the problem. For real-world problems, you would want an approximation, so you have an estimate of the length you are looking at.

Answer:  The required probability is 0.9.

Step-by-step explanation:  Given that Anna is shopping for a new backpack. The probability that the backpack is pink is 0.7, the probability that it is canvas is 0.7 and the probability that it is pink and canvas is 0.5.

We are to find the probability that the backpack is either pink or canvas.

Let, 'A' and 'B' be the events that the backpack is pink and canvas respectively.

Then, according to the given information, we have

[tex]P(A)=0.7,~~P(B)=0.7,~~P(A\cap B)=0.5,~~~P(A\cup B)=?[/tex]

From the law of probability, we have

[tex]P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\\Rightarrow P(A\cap B)=0.7+0.7-0.5\\\\\Rightarrow P(A\cap B)=1.4-0.5\\\\\Rightarrow P(A\cap B)=0.9.[/tex]

Therefore, the required probability that the backpack is either pink or canvas is 0.9.

False, If (7x+4) is a factor of some polynomial function F, then - 4/7 is a zero

We know that if x = a is one of the roots of a given polynomial x - a = 0 is a factor of the given polynomial.

To confirm if x - a = 0 is a factor of a polynomial we replace f(x) with f(a) and if the remainder is zer then it is confirmed that x - a = 0 is a factor.

Given (7x + 4) is a factor of a polynomial function F.

Then, 7x + 4 = 0.

7x = -4.

x = - 4/7 is a root of the polynomial F or a zero of the polynomial F.

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The equivalent expression to (3 x 1,000) + (3 x 10) + (3 x 1/100) + (3 x 1/1000) is 3030.033. This result doesn't require simplification through Exponential or Scientific notation since it's not an especially large or small value.

The student's question is asking for an alternative way to write the number produced by the mathematical operation: (3 x 1,000) + (3 x 10) + (3 x 1/100) + (3 x 1/1000). This is a combination of addition and multiplication involving decimal places. It can also be expressed in exponential notation:

So, another way to write the stated combination of multiplication and addition operations is 3030.033. The Exponential notation might not be an ideal replacement in this specific case since the result is not a large or small number which normally requires this notation. Scientific notation, (which uses powers of ten to express larger or smaller numbers), could most effectively be implemented if our final result was a very large or very small number.

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The pmf of the random variable y = x mod (3) is: P(y=0) = 0.4, P(y=1) = 0.3, and P(y=2) = 0.3.

The random variable y can take on the values 0, 1, and 2, since those are the possible remainder values when x is divided by 3. We need to find the probability mass function (pmf) of y, which represents the probabilities of each possible value of y. The pmf of y can be calculated by finding the probability of each possible value of y based on the probability distribution of x and dividing it by the total number of possible values of x. Since x takes values from 0 to 9 with equal probability, the pmf of y is:

P(y=0) = P(x=0) + P(x=3) + P(x=6) + P(x=9) = 1/10 + 1/10 + 1/10 + 1/10 = 4/10 = 0.4

P(y=1) = P(x=1) + P(x=4) + P(x=7) = 1/10 + 1/10 + 1/10 = 3/10 = 0.3

P(y=2) = P(x=2) + P(x=5) + P(x=8) = 1/10 + 1/10 + 1/10 = 3/10 = 0.3

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The weekly salary based on this annual salary will be $1.102.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Mitchell found a job listed in the classified ads that pays a yearly salary of $57.300.

Now,

Since, Mitchell found a job listed in the classified ads that pays a yearly salary of $57.300.

We know that;

In 1 yea, The number of weeks = 52

Hence, The weekly salary based on this annual salary = $57.300 ÷ 52

                                                                                     = $1.102

Thus, The weekly salary based on this annual salary will be $1.102.

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Answer:

[tex]y=\frac{15}{19}x[/tex]

Step-by-step explanation:

Let

x-----> the number of hours that Mitul works

y-----> the hours that Samir works

by proportion

[tex]\frac{x}{y}=\frac{19}{15}\\ \\19y=15x\\ \\y=\frac{15}{19}x[/tex]

Answer:

The correct option is B. The absolute value parent function is f(x) = |x|.

Step-by-step explanation:

The absolute parent function is a function where

[tex]f(x)=x[/tex] and [tex]f(-x)=x[/tex]

The graph of absolute function is v-shaped and vertex of the function is (0,0).

According to these conditions the absolute value parent function is

f(x) = |x|

The function f(x) = |x| – 2 shifts 2 units down.

The function f(x) = |2x| stretch by factor 2.

The function f(x) = |x| + 1 shifts 1 units up.

Therefore the correct option is B.

Answer:

Option A is correct

Step-by-step explanation:

I know this because I am in k12 online school and it said it was: The coach received 100 tokens for the amusement park rides. If there are p players on the team, each player will receive 100p tokens. I hope this helps! Have a fantastic day!

The algebraic expression for the word phrase '9 less than half a number' is x/2 - 9.

To write an algebraic expression for the word phrase '9 less than half a number,' we first need to define a variable to represent the number. Let's say the number is 'x.' Half of 'x' can be written as 'x/2.' Then, we subtract 9 from 'x/2,' which gives us the algebraic expression: x/2 - 9.

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The algebraic expression for '9 less than half a number' is written as 1/2n - 9, where 'n' stands for the number.

To write an algebraic expression for the word phrase '9 less than half a number', you need to break down the phrase into mathematical terms. Firstly, consider 'half a number'; this can be represented as 1/2n where 'n' is the variable representing the number. The phrase '9 less than' indicates a subtraction of '9' from 'half a number'. Therefore, the algebraic expression would be 1/2n - 9.

Answer:

C.  (16y + 7z)

Step-by-step explanation:

9y + 11z + 7y - 4z

1. Simplify the y's: 9y + 7y = 16y

16y + 11z - 4z

2. Simplify the x's: 11z - 4z = 7z

16y + 7z

Answer:

16y+7z

Step-by-step explanation: no thanks im good

Answer:

D) Obtuse

Step-by-step explanation:

0.73 =  0.7300 is our answer.

Given,

0.73 and 0.7300

We have to compare these decimal numbers.

< = less than

> = greater than

=  means equal

≤ = less than or equal to

≥ = greater than or equal to

We have,

0.73 = 73 / 100

There are two numbers after the decimal point.

We divide it by 100.

0.7300 = 7300/1000 = 73/100

There are four numbers after the decimal point.

We divide it by 10000.

We see that both the decimal numbers are equal.

Thus 0.73 =  0.7300

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