1. The cafeteria manager at a middle school wanted to keep track of how many student breakfast and lunches were sold on a Monday.
A
B <
C
D

2. The following information matrices show the number of breakfasts & lunches sold at a little creek middle school on Monday and the prices of breakfast and lunch
A
B
C
D

3. The following information matrices shows how many of each vehicle type sold and the bonus amount each salesperson receives for selling that type of vehicle for the car dealership for the week.
A
B
C
D (each sold the same number of vehicles) <

4. Consider the following information matrices for the price of clothing at a clothing store
A
B
C
D

5. a movie theater marks up tickets by 10%. use a scalar product to find the marked-up prices. which matrix operation correctly represents this below?
A
B
C
D

Answer:

Step-by-step explanation:

A "term" is a (signed) number, variable, or product of numbers and variables, separated from other terms by + or - signs. That is, it is the largest such product that includes any given number or variable.

A "factor" is a piece of a product. It is multiplied by other factors to form a product. It can be a (signed) number or variable or some expression.

One way to think of it is that terms are delimited (separated) by + or - signs. Factors are delimited by × or / signs.

__

The terms of 4x -10 are "4x" and "-10".

_____

The sign typically goes with the term. That is, an expression is a sum of terms.

Answer:

96%

because if you add all of them up then add 96 then divid by 5 you get 93 which is the average.

hope this helps :)

Answer:

A) (2+x)/(4+x) × 100 = 75

B) 4

Step-by-step explanation:

2 out of 4

(2+x) out of (4+x)

(2+x)/(4+x) × 100 = 75

(2+x)/(4+x) = 3/4

8 + 4x = 12 + 3x

x = 4

Pls mark Brainliest.

Answer:

If we write the final answer with negative exponents, then it will be:

(x^-7)(y^-4)

If we write this as a fraction, it will be:

1/(x^7)(y^4)

Step-by-step explanation:

x^-3 is equivalent to 1/x^3. We can put this in the denominator expression and calculate the product:

[tex]\frac{y^{2} }{(x^4)(x^3)(y^6)}[/tex]    This simplifies into:

[tex]\frac{y^{2} }{(x^7)(y^6)}[/tex]    after the denominator simplifies.

If we write the final answer with negative exponents, then it will be:

(x^-7)(y^-4)

If we write this as a fraction, it will be:

1/(x^7)(y^4)

The simplified form of [tex]\(\frac{{x^{-3} \cdot y^2}}{{x^4 \cdot y^6}}\)[/tex] is [tex]\(\frac{1}{{x^7 \cdot y^4}}\)[/tex], with all exponents as positive values in the denominator.

To simplify the expression [tex]\(\frac{{x^{-3} \cdot y^2}}{{x^4 \cdot y^6}}\)[/tex], we can apply the rules of exponents. First, we subtract the exponent in the denominator from the exponent in the numerator for each variable (x and y).

For x, we have [tex]\(x^{-3 - 4} = x^{-7}\)[/tex], and for y, we have [tex]\(y^{2 - 6} = y^{-4}\)[/tex].

So, the expression simplifies to [tex]\(x^{-7} \cdot y^{-4}\).[/tex]

To express this in a more conventional form, we can move the negative exponents to the denominator, resulting in [tex]\(\frac{1}{{x^7 \cdot y^4}}\).[/tex]

In this simplified form, the expression has all positive exponents and represents the same mathematical relationship as the original expression but in a more compact and manageable format.

To learn more about denominator here

https://brainly.com/question/17907903

#SPJ3

[tex]PQR=( {x}^{2} - yz)( {y}^{2} - {x}^{2} )( {z}^{2} - xy) = \\ = {x}^{2} {y}^{2} {z}^{2} - {x}^{3} {y}^{3} - {x}^{4} {z}^{2} + {x}^{5} y - {y}^{3} {z}^{3} + \\ + x {y}^{4} z + xy {z}^{3} - {x}^{2} {y}^{2} z[/tex]

I don't know if it was necessary to open the brackets, but I think you can write it like this:

[tex]PQR=( {x}^{2} - yz)( {y}^{2} - {x}^{2} )( {z}^{2} - xy) \\ [/tex]

Answer:

The time that the boys need to beat in order to earn a certificate of recognition from the fitness association is 511.264 seconds.

Step-by-step explanation:

We are given that the time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a standard deviation of 40 seconds.

The fitness association wants to recognize the fastest 10% of the boys with certificates of recognition.

Let X = time for this event for boys in secondary school

SO, X ~ Normal([tex]\mu=460,\sigma^{2} =40^{2}[/tex])

The z-score probability distribution for normal distribution is given by;

                               Z = [tex]\frac{X-\mu}{\sigma}[/tex] ~ N(0,1)

where, [tex]\mu[/tex] = mean time = 460 seconds

            [tex]\sigma[/tex] = standard deviation = 40 seconds

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

Now, it is given that the fitness association wants to recognize the fastest 10% of the boys with certificates of recognition, which means;

       P(X > x) = 0.10   {where x is the required time which boy need to beat}

       P( [tex]\frac{X-\mu}{\sigma}[/tex] > [tex]\frac{x-460}{40}[/tex] ) = 0.10

        P(Z > [tex]\frac{x-460}{40}[/tex] ) = 0.10

So, the critical value of x in the z table which represents the top 10% of the area is given as 1.2816, that is;

                       [tex]\frac{x-460}{40} =1.2816[/tex]

                         [tex]{x-460}{} =1.2816\times 40[/tex]

                          [tex]x[/tex] = 460 + 51.264 = 511.264 seconds

Hence, the time that the boys need to beat in order to earn a certificate of recognition from the fitness association is 511.264 seconds.

Answer:

[tex]m\angle ABC=46^o[/tex]

Step-by-step explanation:

step 1

we know that

The inscribed angle is half that of the arc it comprises.

so

[tex]m\angle ADC=\frac{1}{2}(arc\ AC)[/tex]

we have

[tex]m\angle ADC=23^o[/tex]

so

[tex]23^o=\frac{1}{2}(arc\ AC)\\arc\ AC=46^o[/tex]

step 2

we know that

Central angle is the angle that has its vertex in the center of the circumference and the sides are radii of it

so

[tex]m\angle ABC=arc\ AC[/tex] ----> by central angle

therefore

[tex]m\angle ABC=46^o[/tex]

Answer: It will take the pump 20 min

Step-by-step explanation: Please see the attachments below

Answer:

The answer is..

A) 45 black cubes

B) 20 yellow cubes

E) 35 white cubes

Step-by-step explanation:

Final answer:

To estimate the total number of a certain cube in the bag, we can use the proportion of the selected cubes to the total number of cubes. The estimates for the total number of a certain cube in the bag are 45 black cubes and 20 yellow cubes.

Explanation:

To estimate the total number of a certain cube in the bag, we can use the proportion of the selected cubes to the total number of cubes. In this case, the proportion of black cubes to the total number of cubes is 9/20. So, if there are 100 cubes in total, we can estimate that there are approximately 45 black cubes in the bag. Similarly, the proportion of yellow cubes to the total number of cubes is 4/20, so we can estimate that there are approximately 20 yellow cubes in the bag. However, the proportion of white cubes to the total number of cubes is 7/20, which is less than the proportion of yellow cubes. Therefore, we cannot estimate that there are 70 white cubes in the bag. The estimates for the total number of a certain cube in the bag are A) 45 black cubes and B) 20 yellow cubes.

the answers are c and d

Answer: 0.25

Step-by-step explanation:

0.75-0.5= 0.25

Answer:

d= 0.75-0.5

d= 0.25

Step-by-step explanation:

so firstly you subtract 0.5 from both sides

d= 0.75-0.5

d=0.25

Answer:

The mean is all the numbers added together divided by the number of numbers. Greater the numbers the greater the mean. Since the goal of the game is to have as few centimeters away as possible the lowest number (107 or Robin) is winning

Step-by-step explanation:

Answer:

Evelyn has the greater mean. It indicates that, on average, her objects landed farther away from the center than Robin’s. This difference means that Robin is winning the game.

Step-by-step explanation:

this is the answer on the curst platform

Answer:

The top angle is 60 degrees

Step-by-step explanation:

Triangle angle sum equals to 180. 90 plus 30 is 120 and when you subtract that from 180 tada! 60

Stacey made 26 small bags of nuts.

To solve this problem, let's first convert all measurements to the same unit, ounces, so we can compare them easily.

Stacey bought 7 pounds of nuts. Since 1 pound is equal to 16 ounces, 7 pounds would be 7×16=112 ounces.

She used 8 ounces of nuts in a recipe.

So, the amount of nuts she had left after using them in the recipe would be 112−8=104 ounces.

Now, if each small bag contains 4 ounces of nuts, we can find out how many small bags she made by dividing the remaining nuts by the amount in each bag:

[tex]\begin{aligned}& \text { Number of small bags }=\frac{\text { Remaining nuts }}{\text { Nuts per bag }}=\frac{104 \text { ounces }}{4 \text { ounces per bag }} \\& =\frac{104}{4} \\& =26\end{aligned}[/tex]

So, Stacey made 26 small bags of nuts.

Answer:

14

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

So we know that triangle ABC and QRS are similar.

There is a theorem that states that corresponding sides of similar triangles are proportional.

This means that we can set up a proportion to find the missing side of the triangle.

3/7=6/n

Cross multiply.

3*n=7*6

3n=42

Divide both sides by 3.

n=14

Answer:

2/1

then simplify it

= 1/6

The probability of selecting the letter 'N' from the word EXAMINATIONS is 1/6 or approximately 16.67%.

The word EXAMINATIONS consists of 12 letters, and the letter 'N' appears twice in this word. The probability of selecting an 'N' from the word is calculated by dividing the number of occurrences of 'N' by the total number of letters in the word. Therefore, the probability is 2/12, which simplifies to 1/6.

To express this mathematically, the probability P of selecting 'N' from EXAMINATIONS is given by P = n/N, where n is the number of times the event 'selecting N' occurs, and N is the total number of possible outcomes (total letters in the word).

So, P = 2/12 = 1/6. Therefore, the probability of selecting 'N' is approximately 0.1667, or 16.67%.

i believe the answer is independant.

if i'm wrong, please tell me so i can fix my mistake =)

Final answer:

The probability of a spinner, with equal chances of landing on any of its six regions, landing on Region 1 first and then on Region 3 in a second spin is 1/36, reflecting independent events.

Explanation:

The question concerns the concept of dependent probability, which involves calculating the likelihood of a sequence of events where the outcome of one event affects the outcome of another.

Since the spinner has an equal chance of landing on each of its six numbered regions, the probability of the first spin landing in region one is 1/6.

However, the second spin is independent of the first, making the probability of landing in region three also 1/6. Since these are independent events, the combined probability of both events happening in sequence is the product of their probabilities, which is 1/6 x 1/6 = 1/36.

Answer:

58.077 cubic cm

Step-by-step explanation:

Given that:

As we know that, the volume of a conical perfume bottle is as following:

V = (1/3) * π * r² * h

So perfume can the bottle hold is:

V = (1/3) * 3.14 * 3.4² * 4.8 = 58.077 cubic cm

Hope it will find you well

Answer:

[tex]V \approx 58.107\,cm^{3}[/tex]

Step-by-step explanation:

The volume of a cone is:

[tex]V = \frac{1}{3}\pi\cdot r^{2}\cdot h[/tex]

Where:

[tex]r[/tex] - Radius, in centimeters.

[tex]h[/tex] - Height, in centimeters.

The volume of liquid that bottle can hold is:

[tex]V = \frac{1}{3}\pi \cdot (3.4\,in)^{2}\cdot (4.8\,cm)[/tex]

[tex]V \approx 58.107\,cm^{3}[/tex]

Hey there,

The question given is as follows:

When we add polynomials we add like terms (e.x. we add 3x² with -x²) and combine the two to make one polynomial. When we add the two polynomials given above:

So our answer to the problem would be 2x² - 6x.

Hope I helped,

Amna

Answer:

The expected number of times that Noah wears either boots or loafers is 99.

Step-by-step explanation:

Given:-

- Noah has 8 different pairs of shoes to wear, Out of 8 pairs:

                    two pairs of boots

                    one pair of loafers

Find:-

For how many days of the next 264 is it expected that Noah will wear either boots or​ loafers?

Solution:-

- Denote an Event (A) that Noah selects a pair of boots.

- Denote an Event (B) that Noah selects a pair of loafers.

- The probability of each event is to be determined:

                p ( A ) = Pair of boots / Total pair of shoes

                p ( A ) = 2 / 8

                p ( A ) = 1/4

                p ( B ) = Pair of loafers / Total pair of shoes

                p ( B ) = 1 / 8

- The probability that Noah selects a pair of boot or loafers is independent from each other:

               p ( A U B ) = P (A) + P (B)

               p ( A U B ) = 0.25 + 0.125

                                 = 0.375

- The expected number of days out n = 264 days do we expect Noah to wear either boots or loafers.

- The number of days (trials) n = 264 days

- The probability of success = p ( A U B ) = 0.375

- The expected value = n*p

                                   = 264*0.375

                                   = 99 days

Big guy up there done wrote a whole pg. The answer is 99 days. Have a good day.

The closest approximation to the number of seconds in a year is [tex]3\times10^7[/tex], which is option B.

There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. So, to find the number of seconds in a day, you would multiply these values together:

[tex]\[60 \text{ seconds/minute} \times 60 \text{ minutes/hour} \times 24 \text{ hours/day} = 86,400 \text{ seconds/day}.\][/tex]

In a year, there are typically 365 days. So, to find the total number of seconds in a year, you would multiply the number of seconds in a day by the number of days in a year:

[tex]\[86,400 \text{ seconds/day} \times 365 \text{ days/year} = 31,536,000 \text{ seconds/year}.\][/tex]

Since [tex]\(31,536,000\)[/tex] is closest to [tex]\(3 \times 10^7\)[/tex], the best approximation among the given options is B) [tex]\(3 \times 10^7\).[/tex]

Complete Question:

There are about 31,500,000 seconds in a year ?

Choose the best approximation of the number of seconds in a year

A) 3x[tex]10^6[/tex]

B) [tex]\(3 \times 10^7\).[/tex]

Answer:

z=10 because 3x5=15 and you do the same to the other number.

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

To get from 3 to 15 you multiply by 5 so if you multiply 2 by 5 you get 10

Answer:

0.3. and 2

Step-by-step explanation:

For this equation: a=1, b=0.3333333333333333, c=0.8333333333333334

1x2+0.333333x+0.833333=0

Step 1: Use quadratic formula with a=1, b=0.3333333333333333, c=0.8333333333333334.

x=

−b±√b2−4ac

2a

x=

−(0.333333)±√(0.333333)2−4(1)(0.833333)

2(1)

x=

−0.3333333333333333±√−3.222222

2

i think this is right :)

Answer:

y-7= -2 (x-4)

Step-by-step explanation:

We can use the point slope formula, since we have a point, and a slope

[tex]y-y_{1} =m(x-x_{1})[/tex]

m is the slope, y1 is the y coordinate of the point, and x1 is the x coordinate of the point

We know -2 is the slope, 7 is the y coordinate, and 4 is the x coordinate, so we can substitute them in

y-7= -2 (x-4)

Since we don't need to solve, this is the answer. The first bracket is -2, and the second is 4

Point-slope form:  y - y₁ = m(x - x₁)

(m is the slope, (x₁, y₁) is the point you are given that's on the line)

You know:

m = -2

(x₁, y₁) = (4, 7)         So plug it into the equation

y - y₁ = m(x - x₁)  

y - 7 = -2(x - 4)

[so the first bracket is -2, the second bracket is 4]

Answer:

There are 20 color strips in the blanket.

Step-by-step explanation:

We are given the following in the question:

Length of blanket = 6 meter

A new color strip is added every 3 decimetres

We have to find the number of color strips in the blanket.

1 decimetre = 0.1 meter

Number of color strips =

[tex]=\dfrac{\text{Length of blanket}}{\text{Color strip every 3 decimeter}}\\\\=\dfrac{6}{3\times 0.1}\\\\=20[/tex]

Thus, there are 20 color strips in the blanket.

Answer:

a= 20

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

The diagonal is the hypotenuse  and the length and width are the legs

a^2 + 15^2 =25^2

a^2 +225 = 625

Subtract 225 from each side

a^2+225-255=625-225

a^2 = 400

Take the square root of each side

sqrt(a^2) =sqrt(400)

a = 20

Answer:

Pyramid

Step-by-step explanation:

Answer:

let water evaporated be x ml

...

acid 8% ------60 ml

...

final quantity = 10% ----(60-x)

..

60*8 = 10(60-x)

480=600-10x

10x=600-480

10x= 120

/10

x=12 ml should be evaporated.

Step-by-step explanation:

Answer:

8/5

Step-by-step explanation:

I'd write the following:

2       1

---- ÷ ----

 5      4

To divide by a fraction (such as 1/4), invert the divisor fraction and multiply instead:

2       4

---- · ---- = 8/5

 5      1

Answer:

The width is 4 feet

Step-by-step explanation:

Yes, I might be able to answer it! Hello there!

In this question, we are asked to calculate the height of a pool which has a shape of right rectangular prism.

The key to solving this problem is simply by knowing the formula for the volume of a right rectangular prism.

Mathematically the volume V is w * h * l where w , h and l are the width, height and length respectively.

Now let’s input these values and get what the height of the pool is.

It would be easier if you had the measurements are in decimals;

137 1/2 becomes 137.5

6 1/4 becomes 6.25

5 1/2 becomes 5.5

kindly note the fraction 1/2 is 0.5 in decimals while the fraction 1/4 is 0.25 in decimals

So now let’s compute the height;

137.5 = w * 6.25 * 5.5

w = 137.5/(6.25 * 5.5)

w = 137.5/(34.375)

w = 4 feet