Profits at Lin's Pastry shop increased by $1,750 in one 7-day week. By how much did profits increase each day?​

Answer:

$35

Step-by-step explanation:

To do this you would just add the 2 prices together and you would get $34.53 and you would add 47 cents to that and you would get that Daniel gave $35 to the cashier.

Answer:

b\(\geq\)-12

Step-by-step explanation:

Step 1- Subtract 10 from both sides of the inequality.

New inequality:

4b\(\geq\)-48

Step 2- Divide by 4 on both sides of the inequality, to get your answer.

Answer:

b\(\geq\)-12

To solve the system of equations using elimination by pivoting, we will first identify the coefficients of the variables in each equation and write them in a matrix form. Then, we will use pivoting to eliminate the off-diagonal elements and solve for the variables.

For example, let's consider the system of equations:

2x + 3y - z = 7
3x - 4y + 2z = -8
x + y - z = 3

We can write this system in matrix form as:

[ 2  3 -1 |  7 ]
[ 3 -4  2 | -8 ]
[ 1  1 -1 |  3 ]

To eliminate the off-diagonal elements, we will use pivoting. We will pivot on the entry (2, 1), then on (3, 2), and finally on (1, 3). This means we will swap rows and/or columns to make the pivot element (the one we want to eliminate) the largest in absolute value.

First, we will pivot on (2, 1). We swap rows 1 and 2 to make the pivot element the largest in the first column:

[ 3 -4  2 | -8 ]
[ 2  3 -1 |  7 ]
[ 1  1 -1 |  3 ]

Next, we will pivot on (3, 2). We swap rows 2 and 3 to make the pivot element the largest in the second column:

[ 3 -4  2 | -8 ]
[ 2  3 -1 |  7 ]
[ 1 -1 -1 | -1 ]

Finally, we will pivot on (1, 3). We swap columns 2 and 3 to make the pivot element the largest in the third column:

[ 3  2 -4 | -8 ]
[ 2 -1  3 |  7 ]
[ 1 -1  1 | -1 ]

Now we have a matrix in row echelon form. We can solve for the variables by back substitution. Starting with the last equation, we get:

z = -1

Substituting this value into the second equation, we get:

-1y + 3x = 10

Solving for y, we get:

y = -3x + 10

Substituting the values of z and y into the first equation, we get:

3x + 2(-3x + 10) - 4(-1) = -8

Solving for x, we get:

x = 2

Therefore, the solution to the system of equations is:

x = 2
y = 4
z = -1

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Using the P-value method of testing hypotheses with a significance level of 0.05, the sample provides strong evidence to support the claim that the mean score of job applicants from the university is greater than 160.

To test the claim that the mean score of job applicants from the university is greater than 160, we will perform a one-sample t-test using the P-value method. The null hypothesis (H0) assumes that the mean score is equal to 160, while the alternative hypothesis (Ha) assumes that the mean score is greater than 160.

First, we calculate the test statistic, which is the t-value. The formula for the t-value is:

t = (sample mean - hypothesized mean) / (sample standard deviation / sqrt(sample size))

Plugging in the given values, we have:

t = (183 - 160) / (12 /   √(25))

  = 23 / (12 / 5)

  = 23 * (5 / 12)

  ≈ 9.58

Next, we find the P-value associated with the test statistic. The P-value represents the probability of obtaining a test statistic as extreme as the observed value, assuming the null hypothesis is true. Since the alternative hypothesis is one-sided (greater than 160), we calculate the P-value by finding the probability of the t-distribution with 24 degrees of freedom being greater than the calculated t-value.

Consulting statistical tables or using software, we find that the P-value is very small (less than 0.0001).

Since the P-value (less than 0.0001) is less than the significance level (0.05), we reject the null hypothesis. This provides strong evidence to support the claim that the mean score of job applicants from the university is greater than 160.

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The 99% confidence interval for the proportion of all adults in the country who would continue working if they won 10 million dollars in the lottery is from 0.824 to 0.890.

To obtain this interval, we can use the one-proportion plus-four z-interval procedure.

First, we calculate the sample proportion, which is the number of adults who said they would continue working divided by the total number of adults surveyed. In this case, the sample proportion is 890/1075 = 0.827.

Next, we compute the standard error, which measures the variability of the sample proportion.

The formula for the standard error in this case is sqrt((p*(1-p))/n), where p is the sample proportion and n is the sample size. Plugging in the values, we get sqrt((0.827*(1-0.827))/1075) =0.012.

To construct the confidence interval, we add and subtract the margin of error from the sample proportion.

The margin of error is determined by multiplying the standard error by the appropriate z-score for the desired confidence level. For a 99% confidence level, the z-score is approximately 2.576. Thus, the margin of error is 2.576 * 0.012 ≈ 0.031.

Finally, we calculate the lower and upper bounds of the confidence interval by subtracting and adding the margin of error from the sample proportion, respectively.

The lower bound is 0.827 - 0.031 = 0.796, and the upper bound is 0.827 + 0.031 = 0.858. Rounding to three decimal places, we get the final confidence interval of 0.824 to 0.890.

In interpretation, we can say that we are 99% confident that the proportion of all adults in the country who would continue working if they won 10 million dollars in the lottery lies between 0.824 and 0.890.

This means that, based on the survey data, the majority of adults in the country would choose to continue working even if they won a substantial amount of money in the lottery. However, there is still a possibility that the true proportion falls outside of this interval.

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Solution:

Note that:

Use the equation above to solve for t.

The value of t is 24.

Answer:

t=24

Step-by-step explanation:

180=68+5t-8

180=60+5t

180-60=60-60+5t

120=5t

120/5=5t/5

24=t

I’m pretty sure the answer is 4

I hope I’m right

Hope this helps :D

Step-by-step explanation:

=>a+6a=90-12

=>7a=78

=>a=11,14

Answer:

a+6a=90-12

7a=78

a=11,14

Pls brainliest ok thx bye! :D

Answer:

sin 25°

Step-by-step explanation:

sin 42° cos 17° - cos 42° sin 17°

= sin (42° - 17°)

= sin 25°

The given expression sin42° cos17° - cos42° sin17° as a sine of an angle 25° is sin25°.

Mathematically, an expression is an amalgamation of numbers, variables, operations, and functions that are conjugated according to peculiar rules to define a mathematical calculation or association. It can be supposed to as a mathematical idiom or formula.

By conjoining numbers, variables, operators, and functions, mathematical expressions can depict a vague range of calculations and associations.

The given expression is sin42° cos17° - cos42° sin17°.

Use the formula, sinA cosB - cosA sinB = sin(A - B),

sin42° cos17° - cos42° sin17° = sin(42° - 17°)

                                               = sin25°.

So, the expression in a single sine term is sin25°.

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Step-by-step explanation:

7g+4p-3g-9p

7g-3g+4p-9p

g(7-3)+p(4-9)

The events are mutually exclusive events, so P(A|B) is 0.

In this question,

If two events are mutually exclusive, there is no chance that both events will occur. Being the intersection an operation whose result is made up of the non-repeated and common events of two or more sets, that is, given two events A and B, their intersection is made up of the elementary events that they have in common, then

⇒ A ∩ B = 0

Now the conditional probability, P(A|B) = \(\frac{P(A \cap B )}{P(B)}\)

⇒ \(\frac{0}{0.10}\)

⇒ 0.

Hence we can conclude that the events are mutually exclusive events, so P(A|B) is 0.

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Hellooo!!! :)

Answer:

When (2,3) is substituted into the first equation, the equation is true

When (2,3) is substituted into the second equation, the equation is false

The ordered pair  is not a solution to the system of linear equations

Step-by-step explanation:

when (2,3) is subbed into equation 1, it is true

when (2,3) is subbed into the second equation, it is false

the ordered pair (2,3) is not a solution to the system of linear equations

Answer:

the answer should be - 7 1/24, the work is on the picture I sent to you

Answer:

904.78 in^3

Step-by-step explanation:

We know basketball is a sphere,So

Volume of a spherical basketball = 4/3πr^3

Given radius = 6 inches

= 4/3πr^3

= 4/3×3.14×6^3

= 904.78 inches^3

hope it helps!

Answer:

453 in 3

Step-by-step explanation:

First expand the equation.

-5e+5+6e = -17

Next, combine the like terms.

e+5 = -17

e = -22

Answer: Brainly got this! 87 million

Step-by-step explanation:

Answer:

the unit rate would be 66 units per minute

Step-by-step explanation:

2,046/31 = 66

We can find the rate of change of cereal sold to amount spent.

From given information,

Increase in boxes of cereal sold is 200,000 - 100,000 = 100,000

Increase in money spent is 60,000 - 40,000 = 20,000

The rate of change of boxes of celear sold to amount spent is:

100,000/20,000 = 5

If we were to write a linear equation of the form y = mx + b, this rate of change would be m.

Thus,

y = 5x + b

Keep in mind, x is amount spent and y is boxes of cereal sold

We need to find b, so we can easily put the point x = 40,000 and y = 100,000 to find b. Shown below:

y = 5x + b

100,000 = 5(40,000) + b

100,000 = 200,000 + b

b = -100,000

Final Equation of the Line:

We need amount of money needed (x) for 1,000,000 boxes of cereal sold (y).

We can substitute and find the answer:

The third answer choice is correct.

$220,000

The matrix form of the given system of differential equations is [1 -1 0;0 0 1;-1 -2 0][x;y;z] = [x-y;dy/dt;-x-2y].

Given linear system of differential equations is: dx/dt = x - ydy/dt = dz/dt = -x - 2y

Let A be a 3×3 matrix, X = [x,y,z]

T be a column vector of the variables and B = [x-y, dy/dt, -x-2y]

T be the column vector of the right-hand sides of the equations. Then the system can be written in matrix form as AX = B. Matrix A is given by A= [1 -1 0;0 0 1;-1 -2 0]

The column vector of the variables is X = [x,y,z]

T, and the column vector of the right-hand sides of the equations is B = [x-y, dy/dt, -x-2y]T. Thus the matrix form of the given system of differential equations is: [1 -1 0;0 0 1;-1 -2 0][x;y;z] = [x-y;dy/dt;-x-2y]

The matrix representation of the system of differential equations is given by the coefficient matrix A and column vector of the variables X. The column vector of the right-hand sides of the equations is B.

Answer: The matrix form of the given system of differential equations is [1 -1 0;0 0 1;-1 -2 0][x;y;z] = [x-y;dy/dt;-x-2y].

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The cost per second to power such a circuit during the peak usage period is approximately \(2.376 x 10^-6\)$/s. The cost per second to power the circuit during the peak usage period can be calculated using the following steps:

Calculate the power consumption of the device-The power consumption of the device can be calculated using the formula: Power = Voltage x Current. P = V x I, Substituting the given values:

P = 110V x 0.12A

= 13.2 W

Calculate the cost per second-The cost per second can be calculated using the formula:

Cost per second = Power x Cost per Joule

C = P x CC

= 13.2 W x 1.8 x \(10^-7\) $/J

≈ 2.376 x 10^-6 $/s

Therefore, the cost per second to power such a circuit during the peak usage period is approximately 2.376 x\(10^-6\) $/s.

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Answer:

answer D

Step-by-step explanation:

the ans is D............

Answer:

E

Step-by-step explanation:

Supplementary angles: angles that equal to 180

H + G = 180

H + F = 180

H and E are the same angle, but since they are not right angles, they do not equal 180

The distance between points P and Q, PQ, is 11 units.

To find the distance between points P and Q on line L, given their corresponding function values in the coordinate system f, we can use the absolute value function.

The distance between two points can be calculated as the absolute value of the difference between their function values in the coordinate system.

Let's denote the distance between points P and Q as PQ. Given that f(P) = -4 and f(Q) = 7, we can find PQ as:

PQ = |f(Q) - f(P)|

PQ = |7 - (-4)|

PQ = |7 + 4|

PQ = |11|

Therefore, the distance between points P and Q, PQ, is 11 units.

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Answer:

7.25h=348

Step-by-step explanation:

The expression is simplified to -3. 59n - 12. 3

An algebraic expression can be described as an expression made up of terms, factors, constants, variables and coefficients,

These expressions are also thought to be made up of arithmetic or mathematical operations, which includes;

From the information given, we have the expression;

(8.21n − 5.3) − (7 + 11.8n)

First, we have to expand the bracket, we get;

8.21n - 5. 3 - 7 - 11.8n

Now, collect like terms, we have;

8.21n - 11.8n - 5. 3 - 7

-3. 59n - 12. 3

Hence, the expression is -3. 59n - 12. 3

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Complete question:

Simplify the expression (8.21n − 5.3) − (7 + 11.8n)

Answer:

Value is 90,000

Step-by-step explanation:

Answer:

Step-by-step explanation:

90000 or Ninety Thousand

Further explanation

Problem: given 293,672.

Question: what is the value of the digit 9.

This is a problem with place value.

Let's set the place values from 293,672 consecutively as follows.

In the thousands period: 9 hundred thousand, 1 ten thousand, 3 one thousand.

In the unit's period: 2 hundreds 5 tens 6 ones.

Let us say in word form: nine hundred thirteen thousand two hundred fifty-six.

Hence, the value of the digit 9 in the numbers 293,672 is 90000 or nine hundred thousand.

- - - - - - -

What is the value of the digit 1 in the numbers 913,256? The answer is 10,000 or ten thousand.

- - - - - - -

Notes:

Just as a reminder, the digits in large numbers are in groups of three places, i.e.,

hundreds,

tens,

ones (or units).

The groups are called periods, i.e.,

millions period;

thousands period;

ones or units period.

Commas are typically used to separate the periods.

Learn more

An example of the four types of number form brainly.com/question/4725342

The similar problem brainly.com/question/106975

What 3 digits are in the units period of 4,083,817?  brainly.com/question/558692

Keywords: what is the value of the digit 9 in the numbers 913,256, the units period, a large number, standard form, millions, thousands, hundreds, tens, ones, the place value, nine, thirteen, two, fifty-six, number form

Answer: \(k \parallel l\)

Step-by-step explanation:

Lines that are parallel to the same line are parallel.

It is important to consider the scale of measurement and the specific characteristics of the variables when selecting an appropriate statistical test.The tests can be classified as follows:

1. A researcher measures the proportion of schizophrenic patients born in each season.

This test is nonparametric. The scale of measurement is categorical, as the seasons (spring, summer, fall, winter) represent distinct categories rather than continuous numerical values. Therefore, parametric assumptions, such as normality and equal variances, do not apply to this measurement.

2. A researcher measures the average age that schizophrenia is diagnosed among male and female patients.

This test is parametric. The scale of measurement is continuous and numerical (age in years). Parametric tests, such as t-tests or ANOVA, can be applied when working with continuous data, assuming the data meet the required assumptions (e.g., normality, independence, and equal variances).

3. A researcher tests whether frequency of Internet use and social interaction are independent.

This test can be both parametric or nonparametric, depending on the measurement scale and the specific statistical test used. If the variables are measured on a nominal or ordinal scale, nonparametric tests, such as the chi-square test, would be appropriate. If the variables are measured on a continuous scale, parametric tests, such as logistic regression, could be employed.

4. A researcher measures the amount of time (in seconds) that a group of teenagers uses the Internet for school-related and non-school-related purposes.

This test is parametric. The scale of measurement is continuous (time in seconds), and parametric tests, such as t-tests or ANOVA, can be utilized to compare means or variances, assuming the required assumptions are met.

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Using the slope concept, it is found that the base of the left field wall is 361 feet from a point on level ground directly below the top row.

In this problem:

Hence:

\(\tan{14^{\circ}} = \frac{90}{x}\)

\(0.249328 = \frac{90}{x}\)

\(0.249328x = 90\)

\(x = \frac{90}{0.249328}\)

\(x = 361\)

Hence, the base of the left field wall is 361 feet from a point on level ground directly below the top row.

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In the factored form 2x^2 + 4xy - 48y^2 = 2(x - 4y)(x - 4y), the value of the coefficient b is 4.

In the factored form of the trinomial 2x^2 + 4xy - 48y^2 = 2(x - by)(x - 4y), the value of the coefficient b can be determined by comparing the factors of the trinomial with the factored form.

We see that in the factored form, the binomial (x - by) represents the first term and the binomial (x - 4y) represents the last term. The coefficient b corresponds to the term involving both x and y, which is the middle term 4xy in the original trinomial.

Comparing the middle term of the original trinomial (4xy) with the factored form, we can deduce that the coefficient b is equal to 4.

Therefore, in the factored form 2x^2 + 4xy - 48y^2 = 2(x - 4y)(x - 4y), the value of the coefficient b is 4.

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