mario is solving the system of linear equations using the elimination method. first equation: 3x-6y=8 second equation: 2x+3y=-1 which operation will eliminate one of the variables? A. multiplying the first equation by 2 B. multiplying the first equation by 6 C. multiplying the second equation by 2 D. multiplying the second equation by 6.

Therefore , the solution of the given problem of expressions comes out to be  the picture of a point P(x,y) on FG will be P'(-x,y), which is P'reflected across the y-axis.

Instead of using approximations produced at random, it is better to use shifting integers that may prove increasing, reducing, or blocking. They could only help one another by sharing materials, information, or solutions to issues. The justifications, components, or mathematical remarks for techniques like additional disapproval, production, and mixture may be included in a statement of truth equation.

Here,

The x-coordinates of all the locations on FG are transformed when FG is reflected across the y-axis, but the y-coordinates stay the same. As a result, the algebraic formula that characterizes this reflection is as follows:

(-x, y)

As a result, the picture of a point P(x,y) on FG will be P'(-x,y), which is P'reflected across the y-axis.

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Raphael bought a 2/3 pound bag of sugar, and he used 3/4 of it for baking.

To find out how much sugar he used, we need to multiply the fraction of the bag that he used (3/4) by the weight of the bag (2/3 pounds):

(3/4) x (2/3) pounds

To simplify this fraction multiplication, we can cancel out the factor of 3 in the numerator and the denominator:

(1/4) x (2/1) pounds

= 2/4 pounds

= 1/2 pound

Therefore, Raphael used 1/2 pound of sugar for baking.

The probability that the sample proportion of households spending more than $125 a week is less than 0.35 is 0.9884.

Using the given information, the population proportion of households spending more than $125 a week is 0.34. The sample size is 196 households.

Population proportion (p) = 0.34

Sample size (n) = 196

Sample proportion (p') = 0.35

Standard error of proportion (p') = √[p*(1-p)/n] = √[(0.34*0.66)/196] = 0.044

To find the probability that the sample proportion is less than 0.35, we need to find the z-score and then find the area to the left of that z-score using a standard normal distribution table.

z-score = (p' - p) / σp' = (0.35 - 0.34) / 0.044 = 2.27 (approx)

Using a standard normal distribution table, the area to the left of the z-score 2.27 is 0.9884.

Therefore, there is a roughly 0.9884 percent chance that the sample proportion of households paying more than $125 per week is less than 0.35.

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Answer: /

Step-by-step explanation:

Volume =  Length * Width * Height

Length = l = 15,5 in = 393,7 cm

Width = w = 11,2 in = 284,48 cm

Height = h = 8 in = 20,32 cm

Volume =  15,5 * 11,2 * 8 = 1388,8 in or 35275.52 cm

Answer:

c) $ 1013.00

Step-by-step explanation:

Cost per meter of wallpaper = $6.49

So, we need the amount needed to be in the same unit i.e. meters.

1 Feet = 0.3048

So, 512 Feet = 156.0576 or 156 meters.

Cost of total wallpaper = 156 * 6.49 = $ 1012.44

So, the option which matches 1012.44 here approximately is c) $ 1013.00

Answer:

1,013.00

Step-by-step explanation:

0.3048 meters =1 foot

156.058 meter=512.0013123feet

156.058* 6.49=1012.81642

since there is a 8 after the decimal round up

1,013.00

To write the equation y = -13x + 102 in irrational form, we need to isolate x on one side of the equation.

First, let's subtract y from both sides to get:

-y + y2 = -13x + y2 + 102

Next, let's divide both sides by -13 to get:

x = (-1/13)y2 + (1/13)y - (102/13)

Therefore, the irrational equation of y2 = -13x + 102 is:

x = (-1/13)y^2 + (1/13)y - (102/13)

Answer:

A/C/E/F/G/H

Step-by-step explanation:

all of them have the same rotations there just have been turned around

The surface area of the triangular prism is 1152 inches square.

The triangular prism has the base as a right triangle with base of 9 inches, height of 12 inches and third side of 15 inches. The height of the prism is 29 inches.

Therefore,

surface area of a triangular prism = bh + l(s₁ + s₂ + s₃)

where

surface area of a triangular prism = 9 × 12 + 29(9 + 12 + 15)

surface area of a triangular prism = 108 + 29(36)

surface area of a triangular prism = 108 + 1044

surface area of a triangular prism = 1152 inches

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The value of cosec ( Ф/2 ) obtained using the double angles formula and half angle identity is : cosec ( Ф/2 ) = 5/√2.

In trigonometry, the double angles for trigonometric functions are dealt with via the double angle formulas. Other significant double angle formulas include:

cos Ф = 3/5

By using half angle identity:

cos( Ф/2 ) = ±  √(1 + cosФ)/2

cos( Ф/2 ) = ±  √(1 + 3/5)/2

cos( Ф/2 ) = ±  √8/10

cos( Ф/2 ) = ±  √2/5

In first quadrant:

cos( Ф/2 ) = +√2/5

Using reciprocal identity:

cosec ( Ф/2 ) = 1/ cos( Ф/2 )

cosec ( Ф/2 ) = 1/√2/5

cosec ( Ф/2 ) = 5/√2

Thus, the value of cosec ( Ф/2 ) obtained using the double angles formula and half angle identity is : cosec ( Ф/2 ) = 5/√2.

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Answer: -25 and 11

solution:

|x+7| - 18 = 0

|x+7| = 18
±x = 18 ± 7

x = -25, 11

The compound interest on birr 5006 at 5% for 4 years compounded annually​ is $1,078.82.

Compound interest is a type of interest that is calculated not only on the initial principal amount but also on the accumulated interest of previous periods.

In other words, the interest earned during each period is added to the principal amount, and the interest for the next period is calculated on the sum of the principal and the accumulated interest.

Given that:

First, convert R as a percent to r as a decimal

r = R/100

r = 5/100

r = 0.05 rate per year,

Then solve the equation for A

A = P(1 + r/n)^(nt)

A = 5,006(1 + 0.05/1)^(1*4)

A = 5,006(1 + 0.05)^(4)

A = $6,084.82

Compound interest =Amount - Principal

Compound interest = 6084.82 - 5006

Compound interest = $1,078.82

Therefore, The total amount accrued, principal plus interest, with compound interest on a principal of $5,006.00 at a rate of 5% per year compounded 1 time per year over 4 years is $6,084.82.

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Answer:

0.03

Step-by-step explanation:

Answer:

.03

Step-by-step explanation:

x = .24(1/8)

x = .24/8

x = .03

Helping in the name of Jesus.

a. Midpoint of AB, BC, CD, DA is (4,4), (0,-4), (-4,-4),(-4,4) respectively. b.  polygon formed by connecting the consecutive midpoints. c.  get a smaller square inside the square.

In geometry, the midpoint refers to the point that is exactly halfway between two given points, lines, or line segments. It is the point that divides a line segment into two equal parts. The midpoint is also known as the half-way point.

The midpoint can be found using a variety of methods, but the most common one is by using the midpoint formula, which is:

Midpoint = [(x1 + x2)/2, (y1 + y2)/2]

Where (x1, y1) and (x2, y2) are the coordinates of the two points.

The midpoint is an important concept in many mathematical and scientific fields, including physics, engineering, and computer graphics. It is often used to determine the center of mass, the point of balance, or the halfway point in a process or journey.

a. We can use the midpoint formula to find the midpoint of each side of the square:

Midpoint of AB: ((0+8)/2, (8+0)/2) = (4,4)

Midpoint of BC: ((0+0)/2, (-8+0)/2) = (0,-4)

Midpoint of CD: ((-8+0)/2, (0-8)/2) = (-4,-4)

Midpoint of DA: ((-8+0)/2, (0+8)/2) = (-4,4)

b. Connecting the consecutive midpoints of each side of a square creates a smaller square inside the original square. We can see this by observing that the midpoints of opposite sides of a square form the vertices of a smaller square.

The polygon formed by connecting the consecutive midpoints of each side of the square is a square.

c. If we repeat the process of connecting consecutive midpoints one more time, we will get a smaller square inside the square formed in part (b). This smaller square will have vertices at the midpoints of the sides of the square formed in part (b). We can see this by observing that the midpoints of the sides of a square form the vertices of a smaller square inside that square.

So the polygon that would result from connecting the consecutive midpoints of each side of the polygon determined in part (b) is another square.

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Answer:

D

Step-by-step explanation:

The experimental probability of selecting a Moon Snail is approximately 0.16.

Probability is the branch of mathematics concerned with measuring the likelihood or probability of an event occurring.

It is a numeric value from 0 to 1, with 0 indicating that the event is not possible and 1 indicating that the event is certain to occur. 

The experimental probability of selecting a Moon Snail can be calculated by dividing the number of Moon Snails by the total number of seashells selected.

The total number of seashells selected is:

33 + 14 + 8 + 15 + 20 = 90

The number of Moon Snails selected is 14.

So the experimental probability of selecting a Moon Snail is:

14/90 = 0.155 or approximately 0.16

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The number of touchdowns are 4, field goals are 2 and safeties are 2 for the given system of equation.

A system of equations in algebra consists of two or more equations and looks for common answers to the equations. "A collection of equations fulfilled by the same set of variables is called a system of linear equations." Finding the values of the variables employed in a system of equations entails solving the set of equations. By keeping the equations balanced on both sides, we compute the values of the unknown variables. Finding the value of the variable that makes the condition of all the provided equations true is the primary goal when solving an equation system.

Let us suppose touchdowns = x.

Let us suppose field goals = y.

Let us suppose safeties = z.

Given that, they score point 8 times, thus:

x + y + z = 8

The total points scored are 38 thus,

7x + 3y + 2z = 38

Also,

x = (y + z)

Substituting the value of y + z in equation 1 we have:

x + x = 8

2x = 8

x = 4

Substitute the value of x in second equation:

7(4) + 3y + 2z = 38

28 + 3y + 2z = 38

3y + 2z = 10

Now, using x = (y + z). we have:

4 - z = y

Substitute the value of y:

3y + 2z = 10

3(4 - z) + 2z = 10

12 - 3z + 2z = 10

-z = -2

z = 2

Substitute the value of x and z:

x = (y + z)

4 = y + 2

y = 2

Hence, the number of touchdowns are 4, field goals are 2 and safeties are 2 for the given system of equation.

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Answer:

no. four

Step-by-step explanation:

Price of the oranges per pound..

Answer:

Step-by-step explanation:

Type of orange

it is known that carbon-14 has a half-life of approximately 5,700 years. This means that after   [tex]5,700[/tex] years, half of the original carbon-14 in a sample will have decayed.

Assuming that t is a function that relates the age of a plant fossil to the percentage of carbon-14 remaining, it can be expressed as:

[tex]t(c) = (ln(c/100) / ln(1/2)) \times 5,700 years[/tex]

where ln represents the natural logarithm.

Using this function, we can complete the statements as follows:

A fossil with 47% of its carbon-14 remaining is approximately 11,323 years old.

[tex]t(47) = (ln(47/100) / ln(1/2)) \times 5,700 ≈ 11,323 y[/tex]   years

A fossil that is [tex]7,000[/tex] years old will have approximately 28% of its carbon-14 remaining.

  [tex]t-1(7,000) = (ln(100/1) / ln(1/2)) \times 5,700 - 7,000 ≈ 23,200[/tex] years remaining

[tex]t-2(c) = (ln(c/100) / ln(1/2)) * 5,700[/tex]

[tex]c = 100 * e^(-7,000 / 5,700) ≈ 28% remaining.[/tex]

Therefore, In the second statement, we are using the inverse of the function t to find the percentage of carbon-14 remaining for a given age. We can write this as  [tex]t-1(7,000) = c,[/tex] where c is the percentage of carbon-14 remaining for a fossil that is   [tex]7,000[/tex] years old.

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Answer:

150+92+168=410

Step-by-step explanation:

The point estimate of the population​ proportion, the margin of error is 0.365.

Margin of error is a statistic that expresses the amount of random sampling error in survey results. The larger the margin of error, the less confident people are that the poll results will reflect the overall census results. When the population is incompletely sampled and the resulting measure has a positive variance, the margin of error will be positive, i.e. the measures differ. The term margin of error is often used in non-survey contexts to refer to the error observed in the reporting of measured quantities.

According to the Question:

Given that:

Lower bound = 0.123​,

Upper bound = 0.607​,

n = 1000

P = Lower Bound + Upper Lower /2

  = 0.123 + 0.607/2

  = 0.73/2

  = 0.365

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Area under the standard normal curve is 0.8558.

To find the area under the standard normal curve between z = -1.46 and z = 1.46, follow these steps:

1. Find the area between z = 0 and z = 1.46: Since the area between z = -1.46 and z = 0 is given as 0.4279, and the standard normal curve is symmetrical, the area between z = 0 and z = 1.46 is also 0.4279.

2. Add the areas between z = -1.46 and z = 0, and between z = 0 and z = 1.46: 0.4279 + 0.4279 = 0.8558.

Area under the standard normal curve z = -1.46 and z = 1.46 is 0.8558.

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There are 8 ounces of cereal left in the box.

Dena ate 1/6 of the cereal, leaving 5/6 of the box for Joey.

Joey then ate 2/3 of the box, which is equivalent to (2/3) × (5/6) = 10/18 of the box.

The amount of cereal left in the box is therefore 18 - 10 = 8 ounces.

Therefore, there are 8 ounces of cereal left in the box.

When b > 1, the function f (x) = bx represents exponential development. If 0 b 1, then the function f (x) = bx depicts exponential decay.

A relation is any subset of a Cartesian product.

As an illustration, a subset of is referred to as a "binary connection from A to B," and more specifically, a "relation on A."

A binary relation from A to B is made up of these ordered pairs (a,b), where the first component is from A and the second component is from B.

Every item in a set X is connected to one item in a different set Y through a connection known as a function (possibly the same set).

A function is only represented by a graph, which is a collection of all ordered pairs (x, f (x)).

Every function, as you can see from these definitions, is a relation from X.

Hence, Exponential growth and decay are the two different kinds of exponential functions.

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A. The experimental probability of getting 3 = 8.3%

B. The probability of getting 6 = 25%

C. Probability of getting numbers less than 4 = 50%

The values have been represented in fractions and decimal below

The total number of times that the dice was thrown = 12

The experimental probability of getting 3 =

As a fraction 1 / 12,

decimal 0.083

As a percentage 8.3%

The total number of times that he got a 6 = 3

The experimental probability of getting 6 = 3 / 12 = 1 / 4

As a fraction 1 / 4

decimal 0.25

As a percentage 25%

numbers less tan 4 are , 1, 2 and 3

The number of times they occurred = 6

The experimental probability of getting > 4 = 6 / 12 = 1 / 2

As a fraction = 1/2

As a decimal = 0.5

As a percent = 50%

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Therefore , the solution of the given problem of number line comes out to be D, {-6}, {-3}, {5}, {-6, -3}, {-6, 5}, {-3, 5}.

The number line, a representation of real numbers in visual form, is a tool for teaching arithmetic. An energy line is depicted by it. Every actual number is used to represent a integer in the genuine number, or every exact number is used to represent a position. The separations between increments on a number line are identical. The numbers in a line can only be replied in the manner indicated by those numbers.

Here,

The set D = "-6, -3, 5" can be divided into a wide variety of subgroups, including:

Since the empty set is a subset of every set, D is a subset of the empty set.

The set D is a subgroup of itself.

=> Because -6 is an element of D, the collection "{-6}" is a subset of D.

=> Because -3 is an element of D, the collection "{-3}" is a subset of D.

=> Because 5 is an element of D, the collection "{5}" is a subset of D.

Due to the fact that both -6 and -3 are components of D, the set "{-6, -3}" is a subset of D.

=> Because both -3 and 5 are elements of D, the collection "{-3, 5}" is a subset of D.

Consequently, the subgroups of D are:, D, {-6}, {-3}, {5}, {-6, -3}, {-6, 5}, {-3, 5}.

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The equation of a line whose slope is 2 and passes through the point (3,1) is y=2x-5

An unending, one-dimensional figure with no width is a straight line. It consists of an infinite number of points connected on either side of a point. There is no curvature in a straight line. It might be angled, vertical, or horizontal. Every angle we draw between any two locations along a straight line will always be a 180-degree angle. We will explore the universe of straight lines in this mini-lesson by comprehending the equations of straight lines in various formats and learning how to answer problems based on straight lines.

The equation of a line whose slope is m and passes through the point (h,k),

y-k=m(x-h)

y=m(x-h)+k

We have a line with slope 2 and passes through the point (3,1)

y= 2(x-3)+1

y= 2x-6+1

y=2x-5

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the solution to this system of equations is x=5 and y=16.

2x + 6 = 3x + 1

Subtract 2x from both sides:

6 = x + 1

Subtract 1 from both sides:

5 = x

Solve for y:

y = 3(5) + 1

y = 16

The substitution method is used to solve a system of equations by replacing one of the variables with an expression containing the other variable. In this system of equations, we have Y=3x+1 and 2x+6=y. To solve this, we start with the second equation and subtract 2x from both sides to get 6 = x + 1. Subtracting 1 from both sides gives us 5 = x. Now that we have x = 5, we can use this to solve for y. We substitute 5 for x in the first equation, giving us y = 3(5) + 1, which simplifies to y = 16. Therefore, the solution to this system of equations is x=5 and y=16.

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Answer:

Should be A

Step-by-step explanation: