The total cost of a belt and a jacket was $91.85, If the price of the belt was 8.61
less than the jacket, what was the price of the belt

Answer:

[tex]y=7,\:x=1[/tex]

Step-by-step explanation:

Given that:

[tex]y=4x+3,\:y=-2x+9\\\\\mathrm{Substitute\:}y=-2x+9\\\\\implies -2x+9=4x+3\\\\\implies -2x-4x = 3-9\\\\\implies -6x = -6\\\\\implies x = 1\\\\\mathrm{For\:}y=-2x+9\\\\\mathrm{Substitute\:}x=1\\\\y=-2\cdot \:1+9\\\\\mathrm{Simplify}\\\\y=7\\\\\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}\\\\y=7,\:x=1[/tex]

Answer:

y=4x-3

y= 1

Y = -2x+9

Y=7 ans

Answer:

no

Step-by-step explanation

A. Linear correlation coefficients is 0.880, Quadratic correlation coefficients is 0.894, Exponential correlation coefficients is 0.888. B. the best fit for this data.

Correlation coefficients are statistical measures that describe the relationship between two variables. They provide a quantitative measure of the strength and direction of the relationship between two variables.

To find the correlation coefficients, we need to calculate the coefficient of determination (r²) for each type of function.

Linear:

Using a calculator or spreadsheet, we can calculate the linear regression equation to be: y = 0.150x + 0.065

where x is the cost of the meal and y is the tip.

The coefficient of determination for the linear function is r² = 0.880, which rounds to 0.880.

Quadratic:

Using a calculator or spreadsheet, we can calculate the quadratic regression equation to be: y = 0.004x² + 0.225x - 0.226

The coefficient of determination for the quadratic function is r² = 0.894, which rounds to 0.894.

Exponential:

Using a calculator or spreadsheet, we can calculate the exponential regression equation to be: y = 0.070e^(0.087x)

The coefficient of determination for the exponential function is r² = 0.888, which rounds to 0.888.

Therefore, the correlation coefficients are:

Linear: 0.880

Quadratic: 0.894

Exponential: 0.888

The quadratic function has the highest coefficient of determination (r²), so it is the best fit for this data.

To know more about exponential visit:

https://brainly.com/question/12480134

#SPJ1

Answer:

Refer to photo above ......alright

Answer:

consonance

Step-by-step explanation:

consonance are words that end the same

spins and veins

The expression "The sum of a number and -3 is equal" can be written as: x - 3 =

From the question, we have the following parameters that can be used in our computation:

The sum of a number and -3 is equal

As a general rule:

An equivalent expression is a different expression that has the same value or meaning as the original expression.

Express the operators properly

a number + -3 =

Express the numbers properly using x

So, we have

x - 3 =

Hence, the algebraic expression of the statement is x - 3 =

Read more about expression at

https://brainly.com/question/15775046

#SPJ1

Complete question

Express the statement as an algebraic expression

The sum of a number and -3 is equal

The sum of the mixed fractions given is 9 [tex]\frac{4}{3}[/tex].

Mixed fractions are type of fractions which consist of a whole number part and a fractional part.

Mixed fractions are of the form a b/c where a is the whole number part and b/c is the fractional part.

Here the two numbers are 7 [tex]\frac{2}{3}[/tex] and 2 [tex]\frac{2}{3}[/tex].

Here 7 [tex]\frac{2}{3}[/tex] is actually 7 + [tex]\frac{2}{3}[/tex] and 2 [tex]\frac{2}{3}[/tex] is actually 2 + [tex]\frac{2}{3}[/tex].

Addition of mixed numbers can be done as following.

First add the whole numbers. Here, add 7 + 2.

Then add the fractional parts together. Fractional parts can be added as normal addition of fractions by making the denominators equal and adding the numerators.

7 [tex]\frac{2}{3}[/tex] + 2 [tex]\frac{2}{3}[/tex] = (7 + [tex]\frac{2}{3}[/tex]) + (2 + [tex]\frac{2}{3}[/tex])

             = (7 + 2) + ([tex]\frac{2}{3}[/tex] + [tex]\frac{2}{3}[/tex])

             = 9 + [tex]\frac{2+2}{3}[/tex]

             = 9 + [tex]\frac{4}{3}[/tex]

             = 9 [tex]\frac{4}{3}[/tex]

The flaw in Jonathan's reasoning is that while he was adding the fractional part, he adds the denominators also instead of keeping it as such.

Hence the sum is 9 [tex]\frac{4}{3}[/tex].

Learn more about Mixed Fractions here :

https://brainly.com/question/29019463

#SPJ1

The solution to 5.650 - 2.913 when regrouped is 2.737

What is regrouping of numbers?

Making groups of ten while doing math operations like addition or subtraction is known as regrouping. This frequently occurs while dealing with double digits.

This process is called regrouping because you’re rearranging numbers into place value to carry out the process. Regrouping is a great way to make larger calculations easier to do, especially for children. When you’re using regrouping with subtraction it can also be known as ‘borrowing’.

This helpful method is taught in schools to make addition and subtraction easier for students. If you’re not sure how it’ll work and if it’ll be as easy as it sounds, don’t worry because we’re going to take you through the process.

When regrouped, 5.650 - 2.913 can be written as:

Therefore, the solution to 5.650 - 2.913 when regrouped is 2.737.

To know more about regrouping visit,

https://brainly.com/question/839250

#SPJ1

Check the picture below.

The scale factor of the dilation is (d) 1 : 5 reduction

From the question, we have the following parameters that can be used in our computation:

The larger rectangle is dilated to form the smaller rectangle

Using the above as a guide, we have the following:

Larger rectangle = 5

Smaller rectangle = 1

So, we have

Scale factor = Smaller rectangle : Larger rectangle

Substitute the known values in the above equation, so, we have the following representation

Scale factor = 1 : 5

Hence, the scale factor is 1 : 5 reduction

Read more about scale at

https://brainly.com/question/10253650

#SPJ1

Answer:

Step-by-step explanation:

[tex]2(3x-2) = 2\times3x-2\times2[/tex]     (multiply each term in the parenthesis by 2)

               [tex]=6x-4[/tex]

Answer:

6x - 4

Step-by-step explanation:

Now we have to,

→ Simplify the given expression.

The property we use,

→ Distributive property.

The expression is,

→ 2(3x - 2)

Let's simplify the expression,

→ 2(3x - 2)

→ 2(3x) + 2(-2)

→ 6x + (-4)

→ 6x - 4

Hence, the answer is 6x - 4.

The sample size for the confidence interval is given as follows:

n = 185.

A confidence interval of proportions has the bounds given by the rule presented as follows:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which the variables used to calculated these bounds are listed as follows:

The confidence level is of 95%, hence the critical value z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so the critical value is z = 1.96.

The margin of error is given as follows:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

The parameters for this problem are given as follows:

[tex]M = 0.071, \pi = 0.41[/tex]

Hence the sample size is obtained as follows:

[tex]0.071 = 1.96\sqrt{\frac{0.41(0.59)}{n}}[/tex]

[tex]0.071\sqrt{n} = 1.96\sqrt{0.41 \times 0.59}[/tex]

[tex]\sqrt{n} = \frac{1.96\sqrt{0.41 \times 0.59}}{0.071}[/tex]

[tex](\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.41 \times 0.59}}{0.071}\right)^2[/tex]

n = 185.

More can be learned about confidence intervals at https://brainly.com/question/25890103

#SPJ1

The value of y in the equation y = 3^x for the point (-2, y) is 1/9

From the question, we have the following parameters that can be used in our computation:

y = 3^x

The above function is an exponential function

Exponential functions are mathematical functions that involve a base raised to a power

Also, we have

(-2, y)

Substitute the known values in the above equation, so, we have the following representation

y = 3^-2

Evaluate

y = 1/9

Hence, the value of y is 1/9

Read more about exponential function at

https://brainly.com/question/11464095

#SPJ1

The critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

What is standard deviation ?

Standard deviation is a measure of the amount of variation or dispersion of a set of data values. It is a statistical measure that indicates how much the individual data points deviate from the mean of the dataset.

To determine if there is sufficient evidence at the 0.1 level that the valve performs below specifications, we need to conduct a hypothesis test.

Let's define our null and alternative hypotheses as follows:

Null hypothesis (H0): The mean water pressure produced by the valve is equal to or greater than 5.1 lbs/square inch (μ = 5.1).

Alternative hypothesis (Ha): The mean water pressure produced by the valve is less than 5.1 lbs/square inch (μ < 5.1).

We will use a one-tailed t-test with a significance level of 0.1. The test statistic is calculated as:

t = (x - μ) / (s / √n)

where x is the sample mean (5 lbs/square inch), μ is the hypothesized population mean (5.1 lbs/square inch), s is the known population standard deviation (0.7), and n is the sample size (240).

Plugging in the values, we get:

t = (5 - 5.1) / (0.7 / √240) = -2.30

The critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

Since our calculated t-value (-2.30) is less than the critical t-value (-1.28), we reject the null hypothesis and conclude that there is sufficient evidence at the 0.1 level to support the alternative hypothesis that the valve performs below specifications.

Therefore, the critical t-value for a one-tailed test with 239 degrees of freedom and a significance level of 0.1 is -1.28.

To know more about standard deviation visit :

https://brainly.com/question/475676

#SPJ1

Therefore , the solution of the given problem of decimal comes out to be a ending decimal cannot therefore be represented by a repeating decimal.

Any number that can be expressed in the form of a ratio (not a fraction) of positive numbers is considered rational. A reasonable fraction is one that has a nonzero denominator. 1/2, 1/5, as well as 3/4 are a few examples of rational integers. "0" can also be expression in a variety of forms as a real function, such as 0/1, 0/2, or 0/3. However, 1/0, 2/0, 3/0, and so forth. It makes logical that there are seven. When two quantities are divided, a rational number results.

Here,

No, you cannot write a terminating decimal as a repeating decimal. A decimal number that terminates after a finite number of digits is referred to as a terminating decimal because it lacks an infinitely repeating pattern.

For instance, the decimals 0.25, 0.75, and 2.1 are all ending ones.

A repeating decimal, on the other hand, is a decimal number that has a regular pattern of digits following the decimal point.

For instance, the decimals

0.333, 0.142857142857, and 1.41421356 all repeat.

A decimal cannot be both terminating and repeating because repeating decimals have an unlimited number of digits while terminating decimals have a finite number of digits.

A ending decimal cannot therefore be represented by a repeating decimal.

To know more about decimal visit :-

https://brainly.com/question/29765582

#SPJ1

The two measures of these data that best describe the typical number of minutes Addison spent reading each day are mean and median.

Mean is the average value of a set of numbers, found by adding up all the numbers and dividing by the total count of numbers. Median is the middle value in a set of numbers when they are listed in order.

To find the mean of the data set, we add up all the values and divide by the total count:

(90 + 60 + 89 + 94 + 60 + 93) / 6 = 85.33

To find the median of the data set, we first put the values in order:

60, 60, 89, 90, 93, 94

Since there are an even number of values, we take the average of the two middle values:

(89 + 90) / 2 = 89.5

Therefore, the mean is 85.33 minutes and the median is 89.5 minutes, which are the two measures that best describe the typical number of minutes Addison spent reading each day.

If Molly bought a watch in Singapore for 58 Singapore dollars.  the difference between the amounts that Molly and Louis paid for their watches, in pounds, is £1.06.

To compare the prices paid by Molly and Louis in the same currency, we need to convert their respective amounts to pounds.

First, we convert Molly's purchase of 58 Singapore dollars to pounds:

58 Singapore dollars x £0.57/1 Singapore dollar = £33.06

Next, we convert Louis's purchase of 336 Hong Kong dollars to pounds:

336 Hong Kong dollars x £1/10.50 Hong Kong dollars = £32.00

Molly paid £33.06 for the watch, while Louis paid £32.00. The difference in the amounts paid is:

£33.06 - £32.00 = £1.06

So, the difference between the amounts that Molly and Louis paid for their watches, in pounds, is £1.06.

Learn more about price here:https://brainly.com/question/1153322

#SPJ1

Answer:

Step-by-step explanation:

Let's call the distance from the tower's base to the end of the wire "d". According to the problem, the height of the tower is 8 feet greater than "d". We can write this as:

height of tower = d + 8

We also know that the wire is 40 feet long. The wire stretches from the ground to the top of the tower, so we can use the Pythagorean theorem to relate the distance "d", the height of the tower, and the length of the wire:

d^2 + (d + 8)^2 = 40^2

Expanding and simplifying this equation gives:

2d^2 + 16d - 960 = 0

Dividing both sides by 2 gives:

d^2 + 8d - 480 = 0

We can solve this quadratic equation using the quadratic formula:

d = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 1, b = 8, and c = -480. Substituting these values and simplifying, we get:

d = (-8 ± sqrt(8^2 + 4(480))) / 2

d = (-8 ± sqrt(2080)) / 2

d ≈ -25.73 or d ≈ 17.73

Since "d" represents a distance, it cannot be negative. Therefore, we choose the positive solution:

d ≈ 17.73

Now we can use the equation we derived earlier to find the height of the tower:

height of tower = d + 8

height of tower ≈ 17.73 + 8

height of tower ≈ 25.73

So the distance from the tower's base to the end of the wire is approximately 17.73 feet, and the height of the tower is approximately 25.73 feet.

The probability of selecting a marble at random is 10/21, or 5/10.

Probability is the likelihood or chance of something happening. It is a mathematical measure of how likely an event is to occur, expressed as a number between 0 and 1. Probability can be used to make predictions and decisions about the future and to explain the likelihood of various outcomes. Probability is an important concept in many fields, including mathematics, finance, statistics, and science.

This is because there are 10 marbles out of a total of 21 total objects (3 golf balls, 8 tennis balls, and 10 metal marbles).

To know more about probability click-
https://brainly.com/question/24756209
#SPJ9

Answer:

$22.49

Step-by-step explanation:

5 pounds of nectarines costs $8.65

8.65/5 = 1.73

1 pound of nectarines costs $1.73

1.73 times 13 = 22.49

Answer:2249/100

Step-by-step explanation:

13 x 8.65/5

calculate : 13 x 8.65/5

2249/100

the correct option is the first one (-10, -3)

All real numbers x falling inside this range are those such that

-10 < x < -3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.

In mathematics, a set is a logically arranged group of items that can be represented in either set-builder or roster form. Sets are typically denoted by curly brackets; for instance, A = 1, 2, 3, 4 is a set. Check the set symbols here as well. The way that sets are represented by a person is always the same: as a group of clearly defined objects or elements. A capital letter designates a set. The cardinal number of a set is the number of elements in the finite set. The number of elements in a set is determined by its order. It describes a set's size. Cardinality is another name for the set order.

From the question:

In interval notation, the set of all integers between -10 and -3 may be written as:

(-10, -3)

All real numbers x falling inside this range are those such that -10 <x <-3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.

to know more about sets visit:

https://brainly.com/question/28492445

#SPJ1

complete question:

Answer:

შეგვიძლია ამოვიღოთ რომ CuO და HNO3 რეაგირებენ და ქებისყარის შედეგად Cu(NO3)2 იქნება წარმოდგენისათვის.

სახელში მოცემული მასალების მიხედვით, შეგვიძლია ამოვიღოთ რომ 1 მოლი CuO რეაგირებულია 4 მოლი HNO3-თი, ანუ შესაბამისად, მასალების მიხედვით:

m(CuO) / M(CuO) = n(CuO) = n(HNO3) = m(HNO3) / M(HNO3)

10 გ / 79,55 გ/მოლი = 0,1256 მოლი CuO = 0,1256 მოლი HNO3 = 12,6 გ / 63,01 გ/მოლი

რეაქციის შემდეგ მივიღებთ, რომ 1 მოლი CuO-სთვის გამოვიყენებთ 4 მოლი HNO3-ს, რაც შემდეგ მანამდე გადავაკეთებთ მათ მიერ რეაქციას, ანუ:

n(Cu(NO3)2) = n(CuO) = 0,1256

Step-by-step explanation:

8.347 rounded to the nearest hundredth is 8.35

The complete sentence is 8.347 rounded to the nearest hundredth is 8.35.

Given sentence is

8.347 rounded to the nearest hundredth is ......

To find the nearest hundredth value

here, count the place value from left to right

place value of 7 is ones.

place value of 4 is hundredth.

So, 8.347 rounded to the nearest hundredth is 8.35.

Therefore, the complete sentence is 8.347 rounded to the nearest hundredth is 8.35.

Learn more about nearest hundredth here:

https://brainly.com/question/29083575

#SPJ6

The probability of rolling a sum of 7 when rolling a pair of six-sided number cubes is 1/6

It is a branch of mathematics that deals with the occurrence of a random event.

We need to count the number of ways in which the cubes will have a sum of 7

There are six possible ways to roll a sum of 7

(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), and (6, 1).

Since each cube has six possible outcomes, there are a total of 6 x 6 = 36 possible outcomes when rolling two number cubes.

The probability of rolling a sum of 7 is the number of ways to roll a sum of 7 divided by the total number of possible outcomes:

Probability of rolling a sum of 7 = number of ways to roll a sum of 7 / total number of possible outcomes

Probability of rolling a sum of 7 = 6 / 36

Probability of rolling a sum of 7 = 1 / 6

Therefore, the probability of rolling a sum of 7 when rolling a pair of six-sided number cubes is 1/6

To learn more on probability click:

https://brainly.com/question/11234923

#SPJ1

Answer: The expected value of each warranty sold can be calculated as the sum of the product of the probability of a product failing after the original warranty period and the replacement cost, and the cost of the extended warranty:

Expected value = (0.8% of $300) + ($47)

Expected value = (0.008)($300) + ($47)

Expected value = $2.40 + $47

Expected value = $49.40

Therefore, the company's expected value of each warranty sold is $49.40.

Step-by-step explanation:

The bug population whose growth shows geometric sequence ,on Week 26 the value is approximately 9,461.01.

What is a geometric sequence, and how can we use it to predict the growth of a population?

A geometric sequence is a sequence of numbers where each term is obtained by multiplying the previous term by a fixed number called the common ratio. Mathematically, a geometric sequence can be expressed as:

[tex]a, ar, ar^2, ar^3, ...[/tex]

where a is the first term, r is the common ratio, and each subsequent term is obtained by multiplying the previous term by r.

Calculation of  the bug population on week 26 -

To solve this problem, we can use the formula for a geometric sequence:

[tex]a_n = a_1 \times r^{n-1}[/tex]

Where:

[tex]a_n[/tex] = the nth term in the sequence

[tex]a_1[/tex] = the first term in the sequence

r = the common ratio between terms

n = the term number

We are given that the bug population follows a geometric sequence, with a first term of 500 and a second term of 600. To find the common ratio, we can divide the second term by the first term:

[tex]r = 600 / 500 = 1.2[/tex]

Now we can use the formula to find the population on Week 26:

[tex]a_{26} = 500 \times 1.2^{(26-1)}[/tex]

[tex]a_{26} = 500 \times 1.2^{25}[/tex]

Evaluate this expression to get:

[tex]a_{26}[/tex] ≈ [tex]9,461.01[/tex]

Therefore, the bug population on Week 26 is approximately 9,461.01.

To know more about geometric sequence visit :

brainly.com/question/21961097

#SPJ9

Answer:

The smallest insect is at 1  1/8 inches.

Step-by-step explanation:

Determining measurements:

There are 8 lines between 1 and 2  so each line is 1/8 inch.

The first x is at 1 1/8 inches.

The smallest insect is at 1  1/8 inches.

As k increases, the graph of f(x) will shift upwards by k units which means Option (2) is the correct answer.

Define the term "graph" ?

In mathematics, a graph is a visual representation of a set of points, often called vertices, that are connected by lines or curves, often called edges or arcs.

The function [tex]f(x) = (x - 5)^3 + k[/tex]  is a cubic function with a vertical shift of k units upwards. The graph of a cubic function is a curve that can have a variety of shapes, including a "hump" shape or a "S" shape, depending on the values of its coefficients.

As k increases, the graph of f(x) will shift upwards by k units. This means that the minimum point of the graph will move higher and higher, while the shape of the curve remains the same. Specifically, the graph will be shifted vertically upwards by k units, and the y-intercept of the curve will be (0,k), instead of (0,0).

If k is very large, the graph of f(x) will approach a vertical line, as the upward shift will dominate the shape of the curve. Conversely, if k is very small, the upward shift will be negligible, and the graph of f(x) will resemble the graph of the basic cubic function y = x^3, with its minimum point at (5, 0).

To learn more about cubic function from the given link :

https://brainly.com/question/29337275

#SPJ1

Answer:

it is impossible to know