show solutions if any 20. -7x + 7y = 1
2x - 2y = -18

Answer:

1. Kevin has 12 pieces of paper.

2. Including Sybill and her friends, each person will get 1/8 of the 1/2 slice.

Step-by-step explanation:

1. This is because if 1 piece of paper turned divided into fourths would 4/1 or 4 “fourths” of paper. So multiply that by 3 since there is 3 pieces of paper and we are following the same steps. 3 x 4 = 12. Hence if you divide 3 pieces of paper into fourths, you will have 12 fourths.

2. Since we are splitting the 1/2 piece four (which includes sybill and her 3 friends) ways, the equation would be: 1/2 divided by 4

Divide:

1/2 divided by 4-

 1/2 : 4 = 1/2 · 1/4 = 1 · 1/2 · 4 = 1/8 

Hence, each friend and Sybill her self will receive a 1/8 piece.

The solution for r in the equation is 428.43

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

100000 = 8000(1+ r/12000)^72

Divide through by 8000

So, we have

12.5 = (1+ r/12000)^72

Take the 72th root of both sides

So, we have

1 + r/12000 = 1.03570211065

Subtract 1

r/12000 = 0.03570211065

So, we have

r = 428.4253278

Hence, the value of r is 428.43

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The maximum is 12 diagonals or a length of 12 × 2√2 =24√2 centimeters.

Note that the ball moves only on the diagonals of the 15 non-overlapping squares. Thus we must find the path that traverses the most diagonals.

From point 1, the path traverses 6 diagonals before ending up at D.

From point 2, the path traverses 12 diagonals before ending up at A (incidentally, it passes through point 5 in the specified direction so we do not need to check point 5).

From point 3, the path traverses 3 diagonals before ending up at B.

From point 4, the path traverses 9 diagonals before ending up at C.

From point 6, the path traverses 10 diagonals before ending up at D.

Thus the maximum is 12 diagonals, or a length of 12 × 2√2 =24√2 centimeters.

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The answer is 36. you basically add and subtract to the left and right.

32+8= 40

40-4=36

(you get the 8 because 2 x 2 x 2 = 8)

Answer:

Step-by-step explanation:

X axis intercept (y=0)

3x+2(0)=5

3x=5

x=5/3

Y axis intercept (x=0)

3(0)+2y=5

2y=5

y=5/2

so, the interception points are: (5/3,0) and (5/2,0)

If a < b, we can say that b is to the right of a on the number line. In other words, a is to the left of b.

A number line is a horizontal line with evenly spaced number increments. The numbers on the line will determine how the number on the line can be answered. The question that goes with the number determines how it will be used, such as plotting a point.

If a b, then b is to the right of a on the number line. To put it another way, an is to the left of b.

This is because the number line depicts the order of real numbers, with smaller numbers to the left and larger numbers to the right. Because an is less than b, it is a smaller number and must be to the left of b on the number line.

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The distance is 295 feet from the surfers from his eyes.

Geometry is the description of figures in a space with a specific number of dimensions and types. Plane geometry is the most prevalent sort of geometry (dealing with objects like the point, lines, circles, triangles, and polygons),

According to the given question, we have attached a figure which represents the given situation.

Let the distance would be x from the surfers from his eyes

As per the figure, using the sine ratio to find x:

sin 29° = perpendicular/hypotenuse

Substitute the known values and solve for x:

sin 29° = 143/x

0.4848 = 143/x

x = 294.96

x ≈ 295 feet

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The equation of parabola in vertex form is [tex]$$\boxed{x^2 - 6x + 9 = 0}$$[/tex]

To write the equation of a parabola in vertex form, we use the following formula:

[tex]$$(x-h)^2=4p(y-k)$$[/tex]

where (h,k) is the vertex and p is the distance between the focus and the vertex.

Given that the focus of the parabola is at (3, 2.5), we can determine that the vertex of the parabola is also at (3, 2.5). Let's substitute these values into the formula:

[tex]$$(x-3)^2=4p(y-2.5)$$[/tex]

To find the value of p, we need to use the fact that the distance between the focus and vertex is p. The distance formula is:

[tex]$$d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$$[/tex]

Substituting the values we know:

[tex]$$\begin{aligned} d &= \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \ &= \sqrt{(3 - 3)^2 + (2.5 - 2.5)^2} \ &= 0 \end{aligned}$$[/tex]

Since d = 0, we know that p = 0 and the equation simplifies to:

[tex]$$(x-3)^2=0$$[/tex]

Expanding the left side:

[tex]$$x^2 - 6x + 9 = 0$$[/tex]

So the equation of the parabola in vertex form is:

[tex]$$\boxed{(x-3)^2=4 \cdot 0 (y-2.5)}$$[/tex]

Or

[tex]$$\boxed{x^2 - 6x + 9 = 0}$$[/tex]

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Question: A line passes through the point (9, 5) and has a slope of -4/3. Write an equation in slope-intercept form for this line.

Answer:

[tex]y=-\frac{4}{3}x+17[/tex]

Given:

x = 9

y = 5

m = -4/3

Step-by-step explanation:

Slope intercept form is y = mx+b

Plug in x, y, and m to solve for b.

[tex]5=-\frac{4}{3}(9)+b[/tex]

[tex]b=5+\frac{4}{3}(9)=17[/tex]

Now that you have b, plug in m and b back into the equation

[tex]y=-\frac{4}{3}x+17[/tex]

Barbara will therefore shell out $171.36 for the cost of shipping and handling.

The amount of money, or its equivalent, for which anything being offered for sale, purchased, or otherwise transacted. A price on someone's head is a sum provided for their capture, whether they are alive or dead.

We must calculate 28% of the chandelier's original purchase price in order to calculate the value Sarah will charge for shipping and handling.

Step 1

Calculate 28% of $612

We can multiply a value by 0.28 to get 28% of it, or reduce it by 100 & then multiply the result by 28. So:

28% of $612 = 0.28 x $612 = $171.36

Step 2

Add the cost of shipping and handling to the purchase price.

Simply include the shipping & handling fee to the original price to get the chandelier's total cost with shipping and handling included:

Total cost = $612 + $171.36 = $783.36

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The equations in the slope-intercept form are

p = 3b + 2 and p = (5/2)b + 15/2.

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction

From the table and scatter plot;

(a). The line for 'Build it' passes through (1, 10) and (3, 15),

then the equation of the line is,

p = (5/2)b + 15/2

Similarly, the equation of the line-'All things home' is,

p = 3b + 2.

(b) the graphs of the lines are given in the attached image.

(c) The equation in the slope-intercept form;

p = 3b + 2 and p = (5/2)b + 15/2.

(d) When b = 65,

then p = 3(65) + 2 and p = (5/2)(65) + 15/2.

So, p = 197 and p = 170

Therefore, all the required values are given above.

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Answer:

Step-by-step explanation:

Let's start by translating the given sentence into an equation:

2x + 29 ≥ -25

To solve for x, we can isolate x on one side of the inequality:

2x ≥ -25 - 29

2x ≥ -54

x ≥ -27

Therefore, the solution to the inequality is x ≥ -27.

The total amount that Jimmy has saved is $420.

Ratio shows the relationship between two or more numbers. It is the  number of times that one value is contained within other value.

Total amount saved = (sum of ratios x total value of R5 saved) / ratio that represents R5 saved

Sum of ratios = 2 + 5 + 7 = 14

Total value of R5 saved = 12 x 5 = R60

= (14 x 60) / 2 = $420

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Answer:

To convert 2 pints into milliliters, we need to use the conversion rate that 1 pint equals 473.176 milliliters.

Therefore, we can calculate that 2 pints is equal to 946.352 milliliters. Rounded to the nearest whole number, this would be 946 milliliters.

Answer:

-2

Step-by-step explanation:

5x/2 = -5

5 x/2=2 (-5)

5x= 2 (-5)

5x= -10

5x/5=-10/5

x=-10/5

x=-2

The value of DAC in the figure would be 47 degrees.

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

The angles EAD, DAC and CAB are all on a straight line which means they add up to 180 degrees.

Angle CAB is in a triangle which means all the angles add up to 180 degrees and the value of this angle is:

= 180 - 80 - 57 = 43 degrees

The value of DAC would then be;

= 180 - EAD - CAB

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

= 180 - 90 - 43

= 90 - 43  = 47 degrees

Hence, the angle is 47 degrees

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The sorting algorithms that are not comparison based are counting sort, bucket sort, and radix sort.

Counting sort works by counting the number of occurrences of each element in an array and then using this information to determine the position of each element in the sorted array.

Bucket sort works by dividing the array into a number of smaller arrays, called buckets, and then sorting each of these smaller arrays separately.

Radix sort works by sorting the elements of an array based on the individual digits of each element, starting with the least significant digit and working up to the most significant digit.

These algorithms do not rely on comparisons between elements, which is why they are not considered comparison based.

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True. A simple random sample is a type of sampling method that is used to select a subset of observations from a larger population.

The key characteristic of a simple random sample is that each observation in the population has an equal probability of being selected to be part of the sample.

Mathematically, this can be expressed as follows: Let N be the population size, and let n be the sample size. Then, the probability of any specific sample of n observations being selected from the population is given by the formula:

P(Sample) = (n!/N!)/(N-n)!

where n! represents the factorial of n (n factorial), and (N-n)! represents the factorial of N-n.

This means that if we were to draw multiple simple random samples of the same size from the same population, each sample would have an equal probability of being selected.

In conclusion, a simple random sample is a method of selecting a subset of observations from a population that ensures that each observation has an equal probability of being selected, and that each sample has an equal probability of being selected.

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With the thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters.

a) 40% of the flanges exceeds 1.01 millimeters.

b) 1.04 millimeters is the thickness that is exceeded by 90% of the flanges.

c) The mean of flange thickness is 1 millimeters and the variance of flange thickness is 0.01 millimeters^2.

a) To determine the proportion of flanges that exceeds 1.01 millimeters, we need to find the area under the probability density function (pdf) of the thickness that is greater than 1.01 millimeters.

Let's call the random variable X representing the thickness of the flange. The pdf of X is uniform, so it has constant value over the interval [0.95, 1.05]. Therefore, the proportion of flanges that exceeds 1.01 millimeters can be found as follows:

P(X > 1.01) = (1.05 - 1.01) / (1.05 - 0.95) = (1.05 - 1.01) / 0.1 = 0.04 / 0.1 = 0.4

So, 40% of the flanges exceed 1.01 millimeters.

b) To find the thickness that is exceeded by 90% of the flanges, we need to solve for X in the following equation:

P(X > X) = 0.9

Substituting the values for the pdf, we get:

(X - 0.95) / (1.05 - 0.95) = 0.9

Solving for X, we get:

X = 0.95 + 0.9 * (1.05 - 0.95) = 0.95 + 0.9 * 0.1 = 0.95 + 0.09 = 1.04

So, 1.04 millimeters is the thickness that is exceeded by 90% of the flanges.

c) The mean of X can be calculated as follows:

Mean = (0.95 + 1.05) / 2 = 1

The variance of X can be calculated as follows:

Variance = (1.05 - 0.95)^2 / 12 = 0.01

So, the mean and variance of flange thickness are:

Mean = 1 millimeters

Variance = 0.01 millimeters^2

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The distance between the points -3,-8, and 6,-8 is 3 units.

The length of the line segment bridging two points on a plane is known as the distance between the points.

Look at the provided points.

Calculate the distance between the points using the given formula.

Given points are -3,-8 and 6,-8

Given two points lies the parallel to X-axis

The distance between the two points is

A (-3,-8) and B(6,-8) =  X₂ - X₁

6 - 3  = 3 units.

Therefore, the distance between two points -3,-8 and 6,-8 is 3 units.

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Answer:

Slope: 1

Y-Intercept: -2

y=x-2

Graph it by plotting a point at (0,-2) and then by going up one to the right. One up and then one to the right and repeat twice. Now you can graph this easily. Hope this helped!!

Step-by-step explanation:

Answer:

Step-by-step explanation:

The answer is 120.3676. i assume you are converting between grams MgSO4 and mole. You can view more details on each measurement unit: molecular weight of MgSO4

The total volume of milk would be 1/2 gallons.

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

Given that,

Volume = 1/4 gallons

The number of weeks = 2

So, the total volume =

1/4 × 2 = 1/2 gallons

Hence, the total volume of milk would be 1/2 gallons

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To convert 0.1667 to a fraction, we write it as 1667/10000, and simplify it to 1/6. Hence, the fraction of .1667 is 1/6.

To convert the decimal number 0.1667 to a fraction, we can write it as 1667/10000. This fraction can be simplified by dividing both the numerator and the denominator by their greatest common factor, which is 167.

1667 ÷ 167 = 10

10000 ÷ 167 = 60 + 40/167

So, the fraction equivalent to 0.1667 is 1667/10000, which can be simplified to 10/60 + 40/167.

10/60 can be simplified to 1/6, so the final simplified fraction is:

0.1667 = 1/6 + 40/167

Therefore, the fraction equivalent to 0.1667 is 1/6.

Converting a decimal to a fraction involves expressing a decimal number as a ratio of two integers. To convert a decimal to a fraction, the decimal is written in the form of a fraction, with the decimal value as the numerator and a power of 10 as the denominator. The resulting fraction can be simplified by finding the greatest common factor between the numerator and denominator, and then dividing both by that factor. For example, to convert 0.1667 to a fraction, we write it as 1667/10000, and simplify it to 1/6.

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Yes You can buy 24 apples for $0.125 per pound. This price will not available except in festival or discounts sale.

what are ounces ?

An ounce is a unit of weight or mass commonly used in the United States and other countries. It is usually abbreviated as oz. One ounce is equal to 1/16th of a pound or approximately 28.35 grams. Ounces are often used to measure small quantities of food or ingredients in recipes, as well as for measuring the weight of small objects.

According to the question:

To determine whether you can buy 24 apples for $9, we need to find the cost per apple.

If 24 apples cost $9, then the cost per apple is:

$9 / 24 apples = $0.375 per apple

Since each apple weighs about 5 ounces, there are about 3 apples per pound:

16 ounces / 5 ounces per apple ≈ 3.2 apples per pound

Therefore, the cost per pound of apples is:

$0.375 per apple / 3 apples per pound = $0.125 per pound

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The Venn diagram shows that the number of students who offer accounting is 30 and offer Accounting and Economics are only 5.

It should be noted that a Venn diagram is an illustration which uses circles to show the relationship between the objects.

We are given that class of 50 students, the number of students who offer accounting is twice as the number who offer Economics 10 students offer neither of the two subjects and 5 students offer both subjects

The number of students who offer Economics are;

= 10 + 5

= 15

Since accounting is twice as the number who offer Economics.

The number of students who offer accounting are;

= 25 + 5

= 30

The number of students who offer only one subject will be as follows;

= 25 + 10

= 35

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The value of f(1) will be 45.

A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.

Given a function f(n) = 45.(4/5)ⁿ⁻¹

To calculate the value of f(1) we will substitute the value of the n by 1.

f(1) = 45.(4/5)¹⁻¹

f(1) = 45.(4/5)⁰

f(1) = 45

To calculate the value of f(n -1) we will substitute the value of the n by

n - 1.

f(n -1) = 45.(4/5)ⁿ⁻¹⁻¹

that can also be written as, from the rule of power

f(n -1) = (45.(4/5)ⁿ⁻¹)/4/5

f(n -1) = (45.(4/5)ⁿ⁻¹) * 5/4

f(n -1) = f(n) * 5/4

so,

f(n) = f(n-1) * 4/5

Therefore, the value of f(1) will be 45, and the value of f(n) = f(n-11)*4/5.

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Answer:

12.5 in²

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

Answer:W+6

Step-by-step explanation: