Please answer this - i'm so desperate!

Answer:

Company B

Step-by-step explanation:

28.50 plus 18= 46.50

16.50 plus 20= 36.50

Answer:

376 cm^2

Step-by-step explanation:

SA=((8x6) x2) + ((10x8) x2) + ((6x10) x2)

SA=(48x2) + (80x2) + (60x2)

SA=96+160+120

SA=376 cm^2

Answer:

6/5 = 1.2 or 6:5

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The family size has the lowest price compared to the family price per ounce which the amount is $0.21 / ounce.

To compare the box of cereal price we need to know the price per ounce first. It can be written as

Price per ounce = price /  total ounces

From the text above, we know that :

large size price = $3.34

large size ounces = 15

family size price = $5.14

family size ounces = 24

By substituting the parameter we can get the price per ounce of large size and family size

Large size

Price per ounce = price /  total ounces

Price per ounce = 3.34 / 15

Price per ounce = $0.22 / ounce

Family size

Price per ounce = price /  total ounces

Price per ounce = 5.14 / 24

Price per ounce = $0.21 / ounce

Hence, the family size has the lowest price compared to the family price per ounce which the amount is $0.21 / ounce.

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To find the line segment C connecting the points (0, 0, 0) and (1, 2, 3), you can use the parametric equations for a line in 3D space. The general form of these equations is:

x = x0 + at
y = y0 + bt
z = z0 + ct

where (x0, y0, z0) is the initial point, (a, b, c) is the direction vector from the initial point to the final point, and t is the parameter that varies from 0 to 1.

For the given points (0, 0, 0) and (1, 2, 3), the direction vector is (1-0, 2-0, 3-0) = (1, 2, 3). So, the parametric equations for the line segment C are: x = 0 + 1t, y = 0 + 2t, z = 0 + 3t
or simply: x = t
y = 2t
z = 3t
with t ranging from 0 to 1.

Source: Stewart, James. Multivariable Calculus (p. 1124). Cengage Learning. Kindle Edition.

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1. Building Supply Company:

Let's define the variables:

Let B represent the number of pallets of bricks.

Let R represent the number of pallets of roofing material.

According to the problem, we have the following restrictions:

At least 30 pallets of brick: B ≥ 30

Each brick pallet weighs 900 pounds: 900B ≤ 34,000 (load capacity of the truck)

At least 20 pallets of roofing material: R ≥ 20

Each roofing material pallet weighs 650 pounds: 650R ≤ 34,000

The first inequality ensures that the company has at least 30 pallets of bricks.

The second inequality guarantees that the total weight of bricks (900B) does not exceed the load capacity of the truck, which is 34,000 pounds.

The third inequality ensures that the company has at least 20 pallets of roofing material.

The fourth inequality guarantees that the total weight of roofing material (650R) does not exceed the load capacity of the truck.

2. Effective Interest Rate Calculation:

To calculate the effective interest rate compounded monthly, we use the formula:

Effective Interest Rate = (1 + (Annual Interest Rate / Number of Compounding Periods)) ^ Number of Compounding Periods - 1

In this case, the annual interest rate is 8.1% (0.081) and it is compounded monthly. Therefore, we have:

Effective Interest Rate = (1 + (0.081 / 12))^12 - 1 = 8.44%

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Step-by-step explanation:

6 x j = 78

j = 78 ÷ 6

j = 13

hope this helps

The equation AB = BC for A is A = BC\(B^{-1}\).

As per the given data:

The equation AB = BC for A is given.

Also, we have to assume that A, B, and C are square matrices and that B is invertible.

Here we have to solve the equation AB = BC for A.

If the determinant of matrix A is non-zero, then the inverse of that matrix exists.

The inverse of matrix A is denoted by \($A^{-1}$\). If a matrix is invertible, then the condition \($A A^{-1}=I=A^{-1} A$\) will be true.

Any matrix A multiplied by the identity matrix I will produce the same matrix A as the output, i.e., AI = IA = A.

Since B is invertible there exists \(B^{-1}\)

\(\Rightarrow A B B^{-1}=B C B^{-1} \quad\left\)

Solve the obtained equation for A by using the properties B\(B^{-1}\)

\($\Rightarrow A I=B C B^{-1}$\) where I is the identity matrix of same order.

A = BC\(B^{-1}\) because A I = I A = A

Therefore, the required matrix A = BC\(B^{-1}\) .

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Answer:

the second

Step-by-step explanation:

refers to well-founded standards of right and wrong that prescribe what humans should do, usually in terms of rights, obligations, benefits to society, justice

If you want to eliminate x than multiply equation 1 by 4 and equation 2 by 3 and subtract them or,

If you want to eliminate y than mutiply equation 1 by 8 and equation 2 by 11 and subtract them.

Answer: B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

i just got the biggest brain ever

Answer:

Step-by-step explanation:

1 billion = 10^9

10^9 people * (10 Liters)/person = 10^10 Liters

this is the correct answer

a) The set {1, 2, 3} does not represent vectors, but rather a collection of scalars. Therefore, there are no vectors in {1, 2, 3}.

b) The number of vectors in "col a" cannot be determined without additional context or information. "Col a" could refer to a column vector or a collection of vectors associated with a variable "a," but without further details, the exact number of vectors in "col a" cannot be determined.

c) Without knowing the specific context of "p" and "col a," it is impossible to determine if "p" is in "col a." The inclusion of "p" in "col a" would depend on the definition and properties of "col a" and the specific value of "p."

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Answer:

15 Soft Tissues

Step-by-step explanation:

24 soft tissues ÷ £7.57 = £3.17 per tissue

20 soft tissues ÷ £6.60 = £3.03 per tissue

15 soft tissues ÷ £5.24 = £2.86 per tissue

Hence 15 soft tissues has the best value.

Answer:

Step-by-step explanation

∠MJH = 180 - 145

           = 35°

Assuming the two angles form a straight line then the measure of the other angle is 35°

Supplementary angles are those angles that sum up to 180 degrees. For example, angle 130° and angle 50° are supplementary angles because sum of 130° and 50 is equal to 180°

Given here, m∠HJM = 145° then m∠MHJ = 180° - 145°

                                                                   = 35°

Hence the measure of the angle is 35°

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Answer: x=16

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    -9/8*x-7-(-25)=0

simplify 9/8

((0 -  (9/8 • x)) -  7) -  -25  = 0

 Subtracting a whole from a fraction

Rewrite the whole as a fraction using  8  as the denominator

7 = 7/1 = 7*8/8

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

  -9x - 56  =   -1 • (9x + 56)

   Adding up the two equivalent fractions

(-9x-56) - (-25 • 8)/8     144 - 9x/8

  144 - 9x  =   -9 • (x - 16)

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, multiply both sides of the equation by the denominator.

Here's how:

 -9•(x-16)/8 • 8 = 0 • 8

Now, on the left hand side, the  8  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  -9  •  (x-16)  = 0

   Solve  :    x-16 = 0  

Add  16  to both sides of the equation :  

                     x = 16

Answer: x=16

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                   -9/8*x-7-(-25)=0

simplify 9/8

((0 -  (9/8 • x)) -  7) -  -25  = 0

Subtracting a whole from a fraction

Rewrite the whole as a fraction using  8  as the denominator

7 = 7/1 = 7*8/8

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

 -9x - 56  =   -1 • (9x + 56)

  Adding up the two equivalent fractions

(-9x-56) - (-25 • 8)/8     144 - 9x/8

 144 - 9x  =   -9 • (x - 16)

When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, multiply both sides of the equation by the denominator.

Here's how:

-9•(x-16)/8 • 8 = 0 • 8

Now, on the left hand side, the  8  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

 -9  •  (x-16)  = 0

  Solve  :    x-16 = 0  

Add  16  to both sides of the equation :  

                    x = 16

By using Euclid's first book, we can prove that the quadrilateral produced by perpendicular, unequal, bisecting diagonals is a kite. A kite is a quadrilateral with two pairs of adjacent sides that are equal in length. In this case, the two pairs of adjacent sides are formed by the diagonals bisecting the quadrilateral into four smaller triangles with equal areas.

According to Euclid's first book, when two lines intersect at a right angle (perpendicular), they form four right angles. In the case of a quadrilateral with perpendicular, unequal, bisecting diagonals, the diagonals intersect at a right angle and divide the quadrilateral into four smaller triangles with equal areas.

1. Draw a quadrilateral with perpendicular, unequal, bisecting diagonals.
2. Label the points where the diagonals intersect as A, B, C, and D.
3. Label the point where the diagonals intersect as E.
4. Use Euclid's first book to prove that the angles at E are all right angles.
5. Use Euclid's first book to prove that the four triangles formed by the diagonals are congruent (equal in area).
6. Use the definition of a kite to prove that the quadrilateral is a kite (two pairs of adjacent sides are equal in length).
7. Therefore, the quadrilateral produced by perpendicular, unequal, bisecting diagonals is a kite.

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Using it's formula, it is found that the accuracy of the test was of 0.85 = 85%.

The accuracy of a test is given by the number of correct results divided by the number of results.

In this problem, there are 80 tests, and of those, 5 + 7 = 12 had incorrect results, hence 68 had correct results.

Hence the accuracy of the test is given by:

a = 68/80 = 0.85 = 85%.

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To find the angle measure for 5 of the 18 parts in the circle, we first need to determine the total number of degrees in the circle. Since a circle has 360 degrees, we can divide it into 18 equal parts by dividing 360 by 18. This gives us 20 degrees for each of the 18 parts.

The following steps are to be followed:

Step 1: Find the angle measure for one part.
A circle has a total of 360 degrees. Since the circle is divided into 18 equal parts, we need to find the angle measure for one part. To do this, divide 360 degrees by 18 parts:

360 degrees ÷ 18 parts = 20 degrees per part

Step 2: Find the angle measure for 5 parts.
Now that we know each part measures 20 degrees, we can find the angle measure for 5 parts by multiplying the angle measure of one part by the number of parts:

20 degrees/part × 5 parts = 100 degrees

So, the angle measure for 5 of those parts is 100 degrees.

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Distance = speed rate x time

Speed rate = 120 miles per hour

Time = 3 hours

Replacing:

D = 120 mph x 3 h = 360 miles

Answer:

Step-by-step explanation:

- 4x^3 / (- 4) = 32 / (- 4)

x should and cannot be negative or it shouldn't be for example (- x) = 90

cubic root (x^3) = cubic root (- 8)

x = cubic root (- 8)

x = 2i

what is "i"?

It is an imaginary number as you cannot square, cubic, or whatever root with a negative in it. so instead you must add "i" to remove the negative as a replacement and indicator that it was a negative number.

a) The relevant population is the heavy soft-drink users in the given case, and the appropriate sampling design that should be used is  stratified random sampling. The list of all heavy soft-drink users is the sampling frame.

b) Cluster sampling refers to a sampling design where population is divided into naturally occurring groups and a random sample of clusters is chosen.

The advantages are efficient, easy to perform, and used when the population is widely dispersed. The disadvantages are sampling errors, have lower level of precision, and have the standard error of the estimate.

a) The relevant population for the public relations research department to investigate the initial reactions of heavy soft-drink users to a new all-natural soft drink is heavy soft-drink users. The appropriate sampling design that can be used to investigate the issues is stratified random sampling.

Stratified random sampling is a technique of sampling in which the entire population is divided into subgroups (or strata) based on a particular characteristic that the population shares. Then, simple random sampling is done from each stratum. Stratified random sampling is appropriate because it ensures that every member of the population has an equal chance of being selected.

Moreover, it ensures that every subgroup of the population is adequately represented, and reliable estimates can be made concerning the entire population. The list of all heavy soft-drink users can be the sampling frame.

b) Cluster sampling is a type of sampling design in which the population is divided into naturally occurring groups or clusters, and a random sample of clusters is chosen. The elements within each chosen cluster are then sampled.

The advantages of cluster sampling are:

The disadvantages of cluster sampling are:

A situation where cluster sampling would be appropriate is in investigating the effects of a new medication on various groups of people. In this case, the population can be divided into different clinics, and a random sample of clinics can be selected. Then, all patients who meet the inclusion criteria from the selected clinics can be recruited for the study. This way, the study will be less expensive, and it will ensure that the sample is representative of the entire population.

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Answer:

-0

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

Answer:8

Step-by-step explanation: you are trying to find how many you can wash in one hour so you take the number that can be washes in 2 hours and divide it by 2

16/2=8

The annual interest rate is 3.1%.

As the annual interest rate of the bank account is x.

and, Shannon invest Ao.

So, A₀(1+x)⁵ = 673.40

A₀(1+x)⁸ = 737.99

Now, dividing the above equation we get

A₀(1+x)⁸/ A₀(1+x)⁵ = 737.99 / 673.40

(1+x)³= 1.0959

1+x = 1.03099

x = 0.03099

x = 3.09%

x = 3.1%

So, the annual interest rate is 3.1%.

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Nice job on getting problem 1 correct.

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

Problem 2

The double stem and leaf plot says we have the following data set for the men's side

Be careful to read the stem first, followed by the leaf (even though the leaf values are listed on the left side of the stem).

Notice how each row is a different stem (in this case, tens digit) to help make things more readable.

If we were to add up all of those values I listed above, then we should get the sum 2707. Divide this over n = 37 to get 2707/n = 2707/37 = 73.162 approximately. This rounds to 73 since your teacher wants you to round to the nearest whole point.

You'll do the same thing for the women's side. That data set is

Again, it's handy to break the scores up by stem or else you'll have a long string of scores to get lost in (or it's easier to get lost in).

Adding up those 37 scores should get you 2824 which then leads to a mean of 2824/n = 2824/37 = 76.324 approximately. This rounds to 76

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

Problem 3

The range for the men is max - min = 98 - 53 = 45

The range for the women is max - min = 100 - 55 = 45

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

Problem 4

It's strongly recommended to use a spreadsheet here. Let's focus on the men's data set.

The idea is to subtract each data value from the mean 73.162, and then square the result. So each term is of the form (x-mu)^2 where mu is the mean.

For example, the data value x = 53 on the men's side will lead to

(x-mu)^2 = (53 - 73.162)^2 = 406.506

We consider this a squared error value.

You'll do this with the remaining 36 other values in the men's data set.

After doing this, you'll add up the 37 items in this new column and you should get roughly 4711.027, and this is the sum of the squared errors (SSE).

Divide this over n = 37 and we get 4711.027/37 = 127.325

Lastly, apply the square root and we arrive at sqrt(127.325) = 11.284 which rounds to 11.28

The steps for the women's standard deviation will be the same. You should get 12.30

-------------

These are population standard deviation values. If you don't want to use a spreadsheet, a much better option is to use online calculators that specialize in population standard deviation.

1) The men's and women's team each played 37 games.

2) the mean score of men's and women's team is 73 and 76 approximately.

3) the range of men's and women's score is 45.

4)the standard deviation of men and women team 11 and 12 approximately.

Number of observations can be found by counting the observations.

Mean is the average of all observations. It is the sum product of observations divided by the number of observations.

The range of observations is the measure of spread. It is the highest value minus the lowest value.

The standard deviation is another measure of variability. It is the square root of variance, where variance is the sumproduct of observations minus the mean, divided by the number of observations.

The data set is given by:

Men's team

Women's team

1) Number of games each team played :

men's team = 37

women's team = 37

2)mean = \(\frac{sum \ of \ observations}{number \ of \ observations}\)

men's team = \(\frac{2707}{37}\) =  = 73.162

women's team = \(\frac{2824}{37}\)  =  = 76.324

3)range =  highest observation - lowest observation

men's team = 98 - 53 = 45

women's team = 100 - 55 = 45

4)population standard deviation = \(\sqrt{ \frac{\sum (x-\bar x)^2}{n}}\)

On using the formula :

men's team = \(\sqrt{\frac{4711.027}{37} } = \sqrt{127.325} = 11.284\)

women's team = \(\sqrt{151.29}\) = 12.3

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Answer:

120 students chose conserving natural resources

Step-by-step explanation:

40% of 300 chose conserving natural resources, to find the number, we have,

Number of students = 40%(300)

Number of students = (0.4)(300)

Number of students = 120

Hence, 120 students chose conserving natural resources

The effective rate per quarter for an annual interest rate of 9% compounded quarterly is approximately 9.37%.

To find the effective rate per quarter when the annual interest rate is 9% compounded quarterly, we can use the formula for the effective interest rate:

Effective Rate = (1 + (Annual Rate / Number of Periods))^Number of Periods - 1

In this case:

Annual Rate = 9%

Number of Periods = 4 (since it's compounded quarterly)

Plugging in these values into the formula:

Effective Rate = \((1 + (0.09 / 4))^4 - 1\)

Calculating this equation will give us the effective rate per quarter:

Effective Rate = \((1 + 0.0225)^4 - 1\)

Effective Rate ≈ 0.0937 or 9.37% (rounded to two decimal places)

Therefore, the effective rate per quarter for an annual interest rate of 9% compounded quarterly is approximately 9.37%.

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