8. ALGEBRA Diego's Subs is offering $0.75 off its foot-long meatball sub. If this represents a 20% markdown, what is the sub's regular selling price?
A $3.25
в $4.25
C $2.75
D $3.75

Answer:

Half as big as little drop?

Step-by-step explanation:

Starting with the provided assertions, a flow proof arranges statements in a logical order.

A mathematically formatted proof known as a "flow proof" uses logic to back up a truth assertion.

Thus, opening with the provided assertions, a flow proof arranges statements in a logical order. Arrows are being used to show the sequence of the assertions, and each assertion has its justification stated beneath it.

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The event that has a theoretical probability of exactly Three-fourths include:

A. not picking a square

D. picking a shape that has only straight edges

E. not picking a circle

The theoretical probability is defined as the proportion of favorable outcomes to possible outcomes. The theory of probability is the science of probability.

The sample space of an object determines theoretical probability. The probability of rolling a 3 on a fair die, for example, is 1/6. This is because the number 3 represents one of the six possible outcomes of rolling a fair die

Therefore, based on the information given, it should be noted that the correct options are A, D and E.

This equation is written as follows: Theoretical Probability = the number of favorable outcomes divided by the total number of possible outcomes.

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If a window in the model is 1.5 in. wide, then the actual window is  7.5 feet wide.

A two-term ratio expressed with a second term of one is referred to as a unit ratio. A unit ratio can be created from any ratio. Example. An illustration of a set of marbles is shown below. The set has eight blue marbles and two red marbles.

Having a denominator of 1, a unit rate is a ratio between two separate units. Divide the numerator by the denominator to obtain the unit rate. The unit rate is the decimal number that results. The price of a good or service is the numerator of a ratio called the unit price, and the quantity is the denominator.

Given,

The scale of the Model =5 in: 25 ft.

Dividing both sides by 5 we get,

[tex]\frac{5in}{5}[/tex] :[tex]\frac{25ft}{5}[/tex]

1 inch:5 feet

If a window on the model is 1.5 inch wide, then from the unit ratio we get,

1 inch × 1.5 : 5 feet × 1.5 feet

1.5 Inch : 7.5 feet

As a result, a window that is 1.5 inches wide in the model will actually be 7.5 feet wide.

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The probability that the mean of the sample is between 120 and 126 gallons is 0.4176

The normal distribution describes a symmetrical plot of data around its mean value, where the width of the curve is defined by the standard deviation

Given: population mean (µ) = 123, standard deviation(σ) =21 and number of sample (n) = 15

Let X represent the gallons of water: We want to find:

P(120 ≤ X ≤ 126)

Z-score(Z) = (X-µ) / (σ/√n)

Z₁ = (120-123)/ (21/√15) = -0.55

Z₂ = 126-123/ (21/√15)= 0.55

P(-0.55≤ Z ≤ 0.55) = = 0.7088 - 0.2912 = 0.4176

(Check the image of the table attached)

Therefore, the probability that the mean of a randomly selected sample of 15 people will be between 120 and 126 gallons is 0.4176

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Answer: x > -7, see attached

Step-by-step explanation:

    Given:

x + 6 > -1

   Subtract 6 from both sides of the equation:

x > -7

    Graph, see attached. We will graph x = -7, and shade to the right.

Answer:

396

Step-by-step explanation:

400-4=396

Answer:

396

Step-by-step explanation:

If a value of 80.4° is added to the data, the range does not change.

The range is 48.

If a value of 60° is added to the data, the median change.

The median was 79.5.

The change median is 77.

It is the average value of the set given.

It is calculated as:

Mean = Sum of all the values of the set given / Number of values in the set

We have,

58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57

The range formula = Highest value - Lowest value

Now,

Highest value = 105

Lowest value = 57

Range = 105 - 57 = 48.

Now,

If the value of 80.4 is added the range remains the same because the range is dependent only on the value of the highest and the lowest value.

We have,

58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57

The median is the mid value of the given set of data after arranging in ascending order.

Arranging the set in ascending order.

57, 58, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

There are 12 elements in the set.

Median = (77 + 82) / 2 = 79.5

If 60 is added we get 13 elements in the set.

The arrangement becomes,

57, 58, 60, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

Median = 77

Thus,

If a value of 80.4° is added to the data, the range does not change.

The range is 48.

If a value of 60° is added to the data, the median change.

The median was 79.5.

The change median is 77.

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Answer:

-60

Step-by-step explanation:

-15 = 1/3x + 5  Multiply all the way through by 3

-45 = x + 15  Subtract 15 from both sides of the equation

-60 = x

Answer: -60 = x

Step-by-step explanation:

If the output value is -15, we need to do this equation.

-15 = (1/3)x + 5.

-5                -5

-20 = (1/3)x

x3     x 3

-60 = x.

Now, let's double-check our answer.

f(60) = (1/3)(-60) + 5

f(-60) = -20 + 5

f(-60) = -15.

This means that x = -60 is our correct answer.

Since the discriminant of the quadratic equation Δ is equals to 0, the given quadratic equation has one solution. Thus, the fourth option is correct.

We know that for a quadratic equation [tex]ax^{2} +bx+c =0[/tex], there exists a discriminant, Δ = [tex]b^{2}-4ac[/tex]. This discriminant gives us the nature of roots that a quadratic equation can have.

Here, we have the given quadratic equation as -

[tex]x^{2} -16x+64=0[/tex]

Comparing this to the general expression of a quadratic equation, we have

a = 1

b = -16

c = 64

So, now we have to find the discriminant of the given quadratic equation.

Δ = [tex]b^{2}-4ac[/tex]

[tex]= (-16)^{2} -4*1*64\\= 256-256 = 0[/tex]

We see that the discriminant, Δ = 0. This implies that the given quadratic equation has one solution. Thus, the fourth option is correct.

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The discriminant of the quadratic equation -2x²-5x+7=0 is 81 units when formula of discriminant is (b²-4ac).

Keeping in mind that a, b, and c are the coefficients of your quadratic in standard form, the discriminant is calculated using the formula b squared minus 4ac. It reveals how many possible answers there are to a quadratic equation. There are two solutions if the discriminant is greater than zero. The square root's argument (i.e., its contents), which is the expression b²-4ac, is known as the "discriminant" because using its value, you can "discriminate" between (i.e., be able to distinguish between) the different solution types.

Here,

-2x²-5x+7=0

discriminant=(b²-4ac)

=(-5)²-(4*-2*7)

=25+56

=81 units

When the discriminant formula is (b²-4ac), the discriminant of the quadratic equation (-2x²-5x+7=0) is 81 units.

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The image point of (2, −6) after the transformation R270° is (4,3).

Given:

(2,-6) and  R270° and (1,2)

Let (x,y) be the point

First translation (1,2)

(x,y) → (x+1,y+2)

Translation of  R270° for translated coordinates

(x+1,y+2) → (-(y+2),x+1)

substitute (2,-6)

= (-(-6+2),2+1)

= (-(-4),3)

= (4,3)

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The numbers from least to greatest is arranged as 5 2/9 < 21/4 < 5.96 < 5.961

To solve this problem, we have to arrange the numbers in an ascending order from the least to the greatest. To do this, we can convert all numbers to whole numbers or fractions to decimal form to make it easier.

convert 5 2/9 to decimal = 5.222

convert 21/4 = 5.25

Let's arrange the number in ascending order

5.22 < 5. 25 < 5.96 < 5.961

The numbers can be arranged from least to greatest using a number line.

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if M > N then the inequality M/N > N/M will be always true

What is Linear Inequality?

The mathematical expression with unequal sides is known as an inequality in mathematics. Inequality is referred to in mathematics when a relationship results in a non-equal comparison between two expressions or two numbers. In this instance, any of the inequality symbols, such as greater than symbol (>), less than symbol (), greater than or equal to symbol (), less than or equal to symbol (), or not equal to symbol (), is used in place of the equal sign "=" in the expression. Polynomial inequality, rational inequality, and absolute value inequality are the various types of inequalities that can exist in mathematics.

The symbols "" and ">" signify tight inequalities, while "" and "" signify slack inequalities. A linear inequality looks precisely like a linear equation, but the symbol connecting two expressions is different.

As in the question M is always greater N

So, is M is divided by a number that is less than M the answer will always be greater than 1

but on the other hand, if N is divided by a number greater than N then the answer will always be less than 1

Therefore, M/N > N/M will always be True

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The test statistic when the a simple random sample has been selected from a normally distributed population is a) -2.24

The test statistic is a number derived from a statistical test that is used to determine whether your data could have occurred under the null hypothesis.

u = 30000

x = 22298

s = 14200

n = 17

Test statistic = = (x - u) / s / ✓n

x = mean

u = theoretical value

s = standard deviation

{n} = variable set size

= (x - u) / s / ✓n

= (22298 - 30000) / 14200 / ✓17

= -2.24

Test statistic = -2.24

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Answer:

32+q

Step-by-step explanation:

it doesn't ask for money

The compound interest = $5320  

and the total amount = $5832

In this question, we need to find the compound interest and the total amount after an hour if the interest is compounded every ten minutes.

Here, principal P= $512

rate of interest R = 5% per minute

                            = 5 x 10 (interest for every 10 min)

                             = 50

Now n = 60 / 10

        n = 6

So using compound interest formula the total amount would be,

A = P(1 + R / 100)^n

A = 512 (1 + 50/100)^6

A = 512 (3/2)^6

A = 5.2 (1.5)^6

A= $5832

Now the Compound Interest = A – P

                                                 = 5832 – 512

                                                 = $5320  

Therefore, the compound interest = $5320  

and the total amount = $5832

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The number of outcomes, using the Fundamental Counting Theorem, is given as follows:

A. Red exactly 3 times and Purple exactly 2: 10.

B. Red at least ounce in 4 spins: 175.

C. Red at least ounce in 5 spins: 781.

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, obtained by the following formula, involving factorials.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

Item a is used with the combination formula, as it is an arrangement of five elements with 3 and 2 repetitions, hence the number of outcomes is:

[tex]C_{5,3} = \frac{5!}{3!2!} = 10[/tex]

The Fundamental Counting Principle states that if there are n independent trials, each with [tex]n_1, n_2, \cdots, n_n[/tex] possible results, the number of outcomes is calculated by the multiplication of the factorials as presented as follows:

[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]

For item b, in four spins, each with four outcomes, the parameters are given as follows:

[tex]n_1 = n_2 = n_3 = n_4 = 4[/tex]

Hence the number of outcomes is:

N = 4^4 = 256.

For no red results, the parameters are as follows:

[tex]n_1 = n_2 = n_3 = n_4 = 3[/tex]

Hence:

N = 3^4 = 81.

Hence the number of outcomes with at least one red is:

256 - 81 = 175.

For item 3, the lone difference is that there are five trials, hence:

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The time until the water is drained from the basement is 24.67 hours.

From the information, it was stated that the burst pipe fills a basement with 37 in. of water and a pump empties the water at a rate of 1.5 in./hr.

Also, the water level h, in inches, after t hours is represented by h = 37 - 1.5t. In this case, for the water to be drained, it'll be at zero. This will be illustrated as:

37 - 1.5t = 0

1.5t = -37

Divide.

t = 37 / 1.5

t = 24.67 hours.

The time is 24.67 hours.

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The exact values of the trigonometric functions of the ordered pair are listed below:

In this problem we find an ordered pair in rectangular form (x, y) that the represents the terminal side of angle θ and from which we must determine the exact values of the sine, secant and cotangent. The definitions for each of the three functions are:

sin θ = y / √(x² + y²)

sec θ = √(x² + y²) / x

cot θ = x / y

If we know that x = 7 and y = - 4, then the exact values of the trigonometric functions are, respectively:

sin θ = (- 4) / √[7² + (- 4)²]

sin θ = - 4√65 / 65

sec θ = √[7² + (- 4)²] / 7

sec θ = √65 / 7

cot θ = 7 / (- 4)

cot θ = - 7 / 4

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The value of  differential dy when x = 4 and dx = 0.2 is 0.68   .

In the question ,

it is given that ,

the equation is y = tan(3x + 8) ,

we need to find the differential dy , when x = 4 and dx = 0.2

So , differentiating  y = tan(3x + 8) with respect to "x" ,

we get

dy/dx = sec²(3x + 8) *3

dy/dx = 3*sec²(3x + 8)

Substituting the values of x = 4 and dx = 0.2 ,

we get ,

dy/(0.2) = 3*sec²(3(4) + 8)

dy/0.2 = 3*sec²(20)

dy/0.2 = 3*1.1324

dy/0.2 = 3.3972

dy = 0.2 * 3.3972

dy = 0.67944

dy ≈ 0.68

Therefore , The value of differential dy when x = 4 and dx = 0.2 is 0.68   .

The given question is incomplete , the complete question is

Let y = tan(3x + 8). Find the differential dy when x = 4 and dx = 0.2  ?

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Answer: 15,070

Step-by-step explanation: subtraction 16200-1130=15,070

The price of the pair of shoes in the department store is $7.

The wholesale price for a pair of shoes is $4.50. A certain department store marks up the wholesale price by 50%.

To find out the price of the pair of shoes in the department store:

The price of the pair of shoes in the department store: $7

Given the wholesale price of pair of shoes is $4.50

Department store of wholesale price is 50%

Than whole sale = 1.5 times the whole sale

Price in department store = 1.5*4.5

= $6.75

Rounded to the nearest cent = $7

Hence the answer is the price of the pair of shoes in the department store is $7.

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Answer:

======================

A ∩ D means intersection of the two sets or the common elements of A and D.

We observe that:

It means the common elements of the two sets are 14 and 16:

Answer:

A ∩ D = {14, 16}

Step-by-step explanation:

Given sets are,

→ A = {x | x is an even integer}

→ D = {13, 14, 15, 16}

Now we have to,

→ find required set of A ∩ D.

Then the answer will be,

→ A ∩ D = {2, 4, 6, 8, ... n} ∩ {13, 14, 15, 16}

→ A ∩ D = {14, 16}

Hence, the required set is {14, 16}.

If you have a 2 foot piece of string and cut off and use a piece 4 3/4 inches long and a piece 2 3/8 inches long, Then 16.875 is the remaining string.

A fraction represents a part of a whole.

1 foot =12 inches

2 foot=24 inches.

Given,

if you have a 2 foot piece of string and cut off and use a piece 4 3/4 inches long and a piece 2 3/8 inches long.

Then  how much string do you still have

We have to subtract the used strings from 24 inches string.

4 3/4 inches=19/4

2 3/8 inches=19/8

Now we have to subtract 19/4 and 19/8 from 24 inches.

24-19/4-19/8

24-4.75-2.375

16.875

Hence 16.875 is the string left with us.

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The number of insects at t=0 is 700, the growth rate is 28e^0.04, population of insects after 10 days is 1044, and the graph of the function is attached.

What is function?

A function, according to a technical definition, is a relationship between a set of inputs and a set of potential outputs, where each input is connected to precisely one output.

a) Number of insects at time (t) = 0 days,

Putting t = 0 in given function:

P(t) = 700e^0.04(0) = 700e^0 = 700

Hence,  the number of insects at t = 0 days is 700.

b) Growth rate of insect population,

In order to find growth we need to differentiate the given function with respect to t.

So,  dP(t)/dt = 700(0.04)e^0.04(0)

= 28e^0.04

Hence, the growth rate is 28e^0.04.

c)  Graph the function is attached in the question.

d) The population of the insects after 10 days,

putting t = 10,

= 700e^0.04(10) = 1044

Hence, population of insects after 10 days is 1044.

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Answer:

no solution

Step-by-step explanation:

The value of one sixth times quantity x plus 24 end quantity equals negative 6 is -180.

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.

In this case, the expression given will be illustrated as:

1/6x + 24 = -6

Collect like terms

x / 6 = -6 - 24

x/6 = -30

Cross multiply

x = -30 × 6

x = -180

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Answer:

Answer: (D) x= 12

Step-by-step explanation:

First you would distribute 1/6 into everything. 1/6 is equal to .16, so you can do that if you would like. you would get .16x + 4

Next, divide .16 on both sides. It should look like this

.16x/.16 + 4/.16.

Your answer should be x+ 25 = -6, or x = 12.

I hope this helps, as I could be wrong. Good luck!

P.S. The guy above me just put the question into AI and just copy pasted it. Not worrying if it was right or not.

x= 11.

[tex]\sqrt{2x+3}=5[/tex]

[tex]\sqrt{2x+3} ^{2} =5^{2} \\ \\2x+3=25[/tex]

[tex]2x+3-3=25-3\\ \\2x=22[/tex]

[tex]\frac{2x}{2} =\frac{22}{2} \\ \\x=11[/tex]

[tex]\sqrt{2(11)+3}=5\\ \\\sqrt{22+3}=5\\ \\\sqrt{25}=5\\ \\5=5.[/tex]

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