If the markup is 80% and the selling price is $21.60, what is the cost to the store?

Answer:

C.  {(3, 4), (3, 5)}

Step-by-step explanation:

Each input can only go to one output to be a function.  In other words, each x can only go to one y

Relation C has an x of 3 going to 2 different y's (4 and 5) so it is a relation not a function

Answer with explanation:

A relation is said to be function, if each element of domain has unique range or no two elements in image has same Preimage.

Option A

3 → 0

0→3

Relation is a Function.

Option B

6 → -2

5→-2

Relation is a function.

Option C

3→4

3→5

Two elements in Preimage has Distinct images. So this relation is not a function.

Option D

5 → 5

-5 → -5

Relation is a function.

Option E.

1 → -2

- 2→ 1

Relation is a function.

Option C: {(3, 4), (3, 5)}

Relation is not a function.

Answer:

-first one

80

- second one

80/880

- last one

9.09%

on edg.

Answer:

What is the absolute error?

✔ 80

What is the ratio of the error to the actual amount?

✔ 80/880

What is the percent error?

✔ 9.09%

The sum of the two vertical angles (4x - 7) and (2x - 13) is 33 degrees.

To find the sum of the two vertical angles, we need to equate the expressions representing the measures of the angles and solve for x.

(4x - 7) = (2x - 13)

4x - 7 = 2x - 13

2x = -6

x = -3

Now we can substitute x = -3 back into one of the expressions to find the angle measures.

Angle 1 = (4x - 7) = (4(-3) - 7) = -12 - 7 = -19

Angle 2 = (2x - 13) = (2(-3) - 13) = -6 - 13 = -19

The sum of the two angle measures is: -19 + -19 = -38

Since angle measures cannot be negative, we can conclude that the sum of the two angle measures is 38 degrees. Answer choice (c) 66 is incorrect because the sum is not positive. The correct answer is (a) 33 degrees.

Answer:   a³ - 218

Step-by-step explanation:

  (a - 6)(a² + 6a + 36)

= a(a² + 6a + 36) -6(a² + 6a + 36)

= a³ + 6a² + 36a

      -  6a² -  36a - 218

= a³ + 0a² +  0a  - 218

= a³ - 218

9282 divided by 433 with a remainder is equal to 21.

Given data:

To divide 9282 divided by 433, we can use variables to represent the numbers and perform the division algebraically.

Let's denote 9282 as a dividend (D) and 433as divisor (d).

D = 9282

d = 433

We need to find the quotient (Q) when D is divided by d.

Q = D / d

Substituting the given values:

Q = 9282 / 433

To simplify the division, we can multiply both the numerator and denominator by a suitable power of 10 to eliminate the decimal point. In this case, multiplying by 10 will suffice:

Q = (9282 * 10) / (433* 10)

Q = 9282 / 433

Now, we can perform the division:

Q = 9282 / 17

So, Q = 21

The quotient is the final answer, and the remainder is 0. Therefore, 9282 divided by 433 with a remainder is equal to 21.

To learn more about equations click :

brainly.com/question/19297665

#SPJ6

Answer:

2/3 of a gallon per minute

Step-by-step explanation:

You can find the rate by subtracting the amount of gallons she observed and dividing it by the time.

7 - 5 = 2 and 2 gallons/3 mins = 2/3 of a gallon each minute.

Answer:  x - 2

Step-by-step explanation:

HCF is more commonly referred to as GCF (greatest common factor)

Factor each expression to see which factor(s) they have in common.

[tex]x^4 - 8x\implies x(x^3-8)\\= x\boxed{(x-2)}(x^2+4x+4)\\\\\\3x^2-8x+4\implies 3x^2-6x-2x+4\implies3x(x-2)-2(x-2)\\=(3x-2)\boxed{(x-2)}\\\\\\2x^2-5x+2\implies 2x^2-4x-x+2\implies 2x(x-2)-1(x-2)\\=(2x-1)\boxed{(x-2)}[/tex]

The only factor that all three expressions have in common is: x - 2

Answer:

y = |x| + 2

Step-by-step explanation:

Hey there!

I want you to think of radicals as like terms. In order to be able to combine like terms, you need the same base and exponent.

For example,

3x^2-y^2 <== same exponent but not same variable

3x^2-x^2 <=== could be combined because exponent (^2) and variable (x) are the same

So, for this question, you're looking for a radical that has 5 under the radical sign and 3 above the radical sign.

"B" is the right answer, because is  ∛ and in the radical it has a √5.

I hope this helps!

~kaikers

What I don’t understand the question

Answer:

D

Step-by-step explanation:

blue line curve going down from y 0,1  red diagonal touching x 3,0 then 0,-3

Answer:

6

Step-by-step explanation:

The correct notation is: Summation from n = 1 to infinity of the expression:

[tex]4(\frac{1}{3} )^{n-1}[/tex]

If we expand this notation, we will find that the given summation represent the terms of a G.P and we have to find the sum of infinite terms of a G.P. By placing n=1,2,3,4,... we can find the first few terms as shown below:

[tex]4(\frac{1}{3} )^{1-1}=4\\\\ 4(\frac{1}{3} )^{2-1}=4(\frac{1}{3} ) \\\\ 4(\frac{1}{3} )^{3-1} =4(\frac{1}{3} )^{2}[/tex]

Its obvious from the above result, that the given summation represent a G.P with first term equal to 4 and common ratio of 1/3. The formula of infinite G.P is:

[tex]S=\frac{a_{1} }{1-r}[/tex]

Using the value of a1 = 4 and r = 1/3 we can calculate the given summation

[tex]S=\frac{4}{1-\frac{1}{3} }=6[/tex]

Therefore, the given summation is equal to 6.

Answer:

TT→T

Step-by-step explanation:

If p is false, then ~p is true.

If q is false, then ~q is true.

Now note that

In your case, both~p and ~q are true, then ~p→~q is true too (or TT→T)

The truth value of the conditional statement ∼p → ∼q is true when both p and q are false, as the conditional is false only when the antecedent is true and the consequent is false.

The question is asking us to evaluate the truth value of the conditional statement ∼p → ∼q when both p and q are false. According to the rules of propositional logic, the implication (→) is false only when the antecedent is true and the consequent is false. Here, since p and q are both false, the antecedent (∼p) is true and the consequent (∼q) is also true. Therefore, the conditional statement is true. This reflects the concept that a conditional statement is always true if either the antecedent is false or the consequent is true, hence in our case the truth value of ∼p → ∼q is true.

Answer:

x = - 5, x = 4

Step-by-step explanation:

To find the zeros set f(x) = 0, that is

(x + 5)(2x - 8) = 0

Equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

2x - 8 = 0 ⇒ 2x = 8 ⇒ x = 4

Answer:

X = -5 or x = 4

Step-by-step explanation:

F(x)=(x+5) (2x-8)

When f(x) = 0

0 =(x+5) (2x-8)

Thus;

x+5 =0 or  2x-8 = 0

Therefore; x= -5 or x = 4

the correct answer is C to this question

Answer:

The answer is

Step-by-step explanation:

First we must follow the order of operation: Please, Excuse, My, Dear, Aunt, Sally; Paranthesis, Exponents, Multiplication, Division, Addition, and Subtration.

First it says to look for parenthesis, which there are; so we do that first;.

3(7x) -2 (4 - x)

  ^

21x - 2 (4 - x)

               ^

 21x - 2 times 4 (btw, we took x away because 4 - x)

               ^ (now we do multiplcation)

      21x - 8  

           ^

           13

answer is 13 + 2x

Answer:

50 units

Step-by-step explanation:

Think of it as taking steps.  Each unit is a step.  It will take you 50 steps to get from -50 to 0, so the distance is 50

Mathematically, end point minus starting point

0 - (-50) =

0+50 = 50

Final answer:

To round 0.660 to the nearest tenth, we find that 0.660 rounded to the nearest tenth is 0.7.

Explanation:

To round 0.660 to the nearest tenth, we need to look at the digit in the hundredth place, which is 6. Since 6 is greater than or equal to 5, we round up. The digit in the tenth place becomes 7, and all digits after the tenths place are dropped. Therefore, 0.660 rounded to the nearest tenth is 0.7.

Answer:

3

Step-by-step explanation:

5 times a number would be 5x, then increase that by 4 is 5x+4.  The problem then says 5x + 4 ≥ 19.  If we solve for x then we get x ≥ 3 so x has to be greater than or equal to 3, so the smallest number it could be is 3.  You can even try any number smaller than 3 and see it doesn't work.  even something like 2.9

Answer:

x ≥ 3  

Step-by-step explanation:

Let the number = x

5 × the number = 5x

Increased by 4 means 5x +4

   Is at least 19 means ≥ 19

5x + 4 ≥ 19

5x       ≥ 15      Subtracted 4 from each side

 x       ≥    3      Divided each side by 5

The smallest possible number that satisfies the conditions is x = 3.

The answer is C, 0.75 :-)

Answer:

the solution is x ≈ 0.75

C is the correct option.

Step-by-step explanation:

We have to solve the equation [tex]2-5^x=2^x-3[/tex]

let us assume two equations

[tex]y=2-5^x...(i)\\\\y=2^x-3[/tex]

Now, in order to solve the equation by graphing method, we graph(i) and (ii) in same coordinate axis.

Graphs of these two equations has been shown in the attached picture.

The, x-coordinate of the intersection point will given the solution.

The x-coordinate of the intersection point is x = 0.746 which can be written as x ≈ 0.75

Therefore, the solution is x ≈ 0.75

C is the correct option.

Answer:

It has one solution

Step-by-step explanation:

3/4 z = 1/4 z - 3 + 5

Subtract 1/4 z on both sides:

2/4 z = -3 + 5

2/4 z = 2

1/4 z = 1

Substitute:

3 = 1 - 3 + 5

3 = -2 + 5

3 = 3

^^^One Solution

Answer:

2 < c < 12

Step-by-step explanation:

If we know two sides of a triangle a and b, the third side, c, can be no bigger than the the other two sides added together, and no smaller than the other two sides subtracted

a-b < c < a+b

We know the two sides are 7 and 5

7-5 < c < 7+5

2 < c < 12

Answer:

6

Step-by-step explanation:

the multiples of 6 are : 6, 12, 18, .....

The multiples of 3 are : 3, 6, 9, 12, ......

The multiples of 2 are : 2, 4, 6, 8, 10, 12, ......

The common multiples are 6 and 12 .....

The least common multiple is 6

Answer:

The correct answer is B) p(x) = -14x - 15

Step-by-step explanation:

To find this, start by writing the function as indicated.

p(x) = r(x) - c(x)

Now input the functions into the appropriate spots.

p(x) = -10x - (4x + 15)

p(x) = -10x - 4x - 15

p(x) = -14x - 15

Answer:

[tex]P(x) =14x-15[/tex]

Step-by-step explanation:

The revenue from selling x necklaces [tex]r(x)= -10x[/tex]

The cost of buying x necklaces is [tex]c(x)= 4x+15[/tex]

The profit from selling x necklaces is [tex]P(x) = r(x)- c(x)[/tex]

Replace r(x) and c(x)

[tex]P(x) =-10x-(4x+15)[/tex]

[tex]P(x) =-10x-4x-15[/tex]

[tex]P(x) =14x-15[/tex]

Answer:

You Would Feel It Faint Because Of Earthquakes Are Loud Rumbles Not Matter How far

Step-by-step explanation:

Answer:

see explanation

Step-by-step explanation:

The ratios of corresponding sides are

[tex]\frac{AB}{A'B'}[/tex] = [tex]\frac{BC}{B'C'}[/tex] = [tex]\frac{AC}{A'C'}[/tex], that is

[tex]\frac{4}{2}[/tex] = [tex]\frac{9}{4.5}[/tex] = 2

Answer:

100%

Step-by-step explanation:

do you need an explanation?

Answer:

[tex]\frac{8}{25}[/tex]  square miles

Step-by-step explanation:

The relationship between the side length (let it be s) of a square and its diagonal (let it be d) is given by:

[tex]s=\frac{d}{\sqrt{2} }[/tex]

Since d is given as 4/5, we solve for s:

[tex]s=\frac{d}{\sqrt{2} }\\s=\frac{\frac{4}{5}}{\sqrt{2} }\\s=\frac{4}{5\sqrt{2} }[/tex]

NOW, area of square is s^2 where s is the side length.

Area = [tex]s^2=(\frac{4}{5\sqrt{2} })^2=\frac{16}{50}=\frac{8}{25}[/tex]

The area of the park is:[tex]\[\boxed{\frac{8}{25} \text{ square miles}}\][/tex]

To find the area of the square park given the length of the diagonal, we need to use the relationship between the side length of a square and its diagonal.

[tex]\[d = s\sqrt{2}\][/tex]

Given that the diagonal [tex]\( d \) is \(\frac{4}{5}\)[/tex] miles, we can set up the equation:

[tex]\[s\sqrt{2} = \frac{4}{5}\][/tex]

[tex]\[s = \frac{\frac{4}{5}}{\sqrt{2}} = \frac{4}{5\sqrt{2}}\][/tex]

Rationalize the denominator by multiplying the numerator and the denominator by [tex]\(\sqrt{2}\):[/tex]

[tex]\[s = \frac{4\sqrt{2}}{5 \cdot 2} = \frac{4\sqrt{2}}{10} = \frac{2\sqrt{2}}{5}\][/tex]

[tex]\[A = \left( \frac{2\sqrt{2}}{5} \right)^2\]\[A = \frac{(2\sqrt{2})^2}{5^2} = \frac{4 \cdot 2}{25} = \frac{8}{25}\][/tex]

Therefore, the area of the park is:

[tex]\[\boxed{\frac{8}{25} \text{ square miles}}\][/tex]

Answer:

statistical question

Step-by-step explanation:

A distribution is the arrangement of data values. The center for data refers to the central tendency measures such as mean, median, and mode. Variability describes the spread of values, often measured by standard deviation.

A distribution is how data values are arranged. The part of the data set where the middle values are concentrated is called the center for data. A survey anticipates that there will be different answers when gathering info. Variability is a measure that describes the spread of values in a data set.

To find the center of a data set, we can calculate measures of central tendency, which include the mean, median, and mode. The mean, or average, is the total of all data values divided by the number of values. The median is the value at the midpoint of the data set when ordered from smallest to largest, effectively splitting the data into two equal parts. The mode is the most frequently occurring value in the data set. If your data set has outliers, the median is often the best measure of the center, as it is less affected by extreme values.

When we refer to variability in a data set, we are often talking about the standard deviation, which tells us how spread out the data values are around the mean. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation suggests the values are spread out over a wider range.

the distance from point b to c is 4 down the y-axis

Answer:

Simplified: 1.56

fraction form 47/30

Answer:

Option D 47/30

Edg 2020