two 99 percent confidence intervals will be constructed to estimate the difference in means of two populations, r and w. one confidence interval, i9 , will be constructed using samples of size 9 from each of r and w, and the other confidence interval, i81 , will be constructed using samples of size 81 from each of r and w. when all other things remain the same, which of the following describes the relationship between the two confidence intervals?A) The width of I81 will be 1/9 the width of I9B The width of I81 will be 1/3 the width of I9c) The width of I81 will be equal to the width of I9D) The width of I81 will be 3 times the width of I9E) The width of I81 will be 9 times the width of I9

The expression in simplified form is 4(2x - 3y).

Given that, an expression, 9x+(-x)+2y+(-14y), we need to simplify it,

9x+(-x)+2y+(-14y)

Opening the brackets,

= 9x - x + 2y - 14y

combining the like terms,

= 8x - 12y

Take 4 common,

= 4(2x - 3y)

Hence the expression in simplified form is 4(2x - 3y).

Learn more about expression click;

https://brainly.com/question/14083225

#SPJ1

The indefinite integral of (3x² * e^(6x²) dx) is (1/4)(e^(6x²)) + C. We can calculate it in the following manner.

To solve the indefinite integral of (3x² * e^(6x²) dx) using substitution, follow these steps:

1. Let u = 6x². Then, du/dx = 12x.
2. Rearrange to find dx: dx = du/(12x).
3. Substitute u and dx into the integral: ∫(3x² * e^u * (du/(12x))).
4. Simplify the integral: (1/4)∫(e^u du).
5. Integrate with respect to u: (1/4)(e^u) + C.
6. Substitute back for x: (1/4)(e^(6x²)) + C.

So, the indefinite integral of (3x² * e^(6x²) dx) is (1/4)(e^(6x²)) + C.

An indefinite integral of a function is the antiderivative of that function, which is a function whose derivative is equal to the original function, up to a constant of integration.

The indefinite integral of a function f(x) is denoted by ∫f(x) dx and is read as "the integral of f(x) with respect to x." When we take the indefinite integral of a function, we do not specify any limits of integration, and hence the result is an expression involving an arbitrary constant, which is determined by any additional information provided.

For example, the indefinite integral of f(x) = 3x^2 + 2x is:

∫f(x) dx = ∫(3x^2 + 2x) dx = x^3 + x^2 + C,

where C is the constant of integration. Note that if we differentiate the expression x^3 + x^2 + C with respect to x, we get 3x^2 + 2x, which is the original function f(x).

Visit here to learn more about indefinite integral brainly.com/question/29133144
#SPJ11

The first 4 terms in the expansion of (1 + x²)⁸ using the binomial theorem are: (1 + x²)⁸ = 1 + 8x² + 28x⁴ + 56x⁶ + ...

The question asks us to find the first 4 terms in the expansion of (1 + x^2)⁸. To expand this binomial, we can use the binomial theorem, which states that for any positive integer n:

To find the value of (1.01)⁸, we substitute x = 0.01 in the above expression:

(1.01)⁸ = (1 + 0.01²)⁸

= 1 + 8(0.01²) + 28(0.01⁴) + 56(0.01⁶) + ...

Using a calculator, we can evaluate this expression to get:

(1.01)⁸ ≈ 1.0824

Therefore, the value of (1.01)⁸ is approximately 1.0824.

Learn more about expansion :

https://brainly.com/question/26430239

#SPJ4

The surface area of rectangular prism is 48 square units

The surface area of rectangular prism is 2(lw+wh+hl)

From the figure the height is 2 units

width is 2 units

length is 5 units

Plug in these values in formula

Surface area = 2(5×2 + 2×2 + 2×5)

=2(10+4+10)

=2(24)

=48

Hence, the surface area of rectangular prism is 48 square units

To learn more on Three dimensional figure click:

https://brainly.com/question/2400003

#SPJ1

To compute cross products, you follow the determinant method, which is to take the difference of the products of the non-matching components and subtract them.

Here are the calculations for the given vectors:

1. B × C = (5 - 1, -(-6 - 3), -10 - 1) = (4, 9, -11)
2. C × B = -(B × C) = (-4, -9, 11)
3. (2B) × (3C) = (2*(-2, 5, 1)) × (3*(3, 1, 1)) = (-4, 10, 2) × (9, 3, 3)
  = (30 - 6, -(-12 - 18), -36 - 6) = (24, 30, -42)
4. A × (B × C) = (1, 0, -3) × (4, 9, -11)
  = (27 - 0, -(-33 - 12), 0 - 4) = (27, 45, -4)
5. A ⋅ (B × C) = (1, 0, -3) ⋅ (4, 9, -11) = 1*4 + 0*9 + (-3)*(-11) = 4 + 0 + 33 = 37

If V1 and V2 are perpendicular, their dot product is 0, and |V1 × V2| can be calculated using the formula: |V1 × V2| = |V1| * |V2| * sin(θ), where θ = 90 degrees (as they are perpendicular). sin(90) = 1, so |V1 × V2| = |V1| * |V2|.

If V1 and V2 are parallel, their cross product is 0, so |V1 × V2| = 0.

To learn more about vector visit;

brainly.com/question/29740341

#SPJ11

The average value of the function f(x) = x² - 11 on the interval [0, 6] is -1/3.

The average value of a function on an interval is a useful concept in many areas of mathematics and applied fields. It represents the "center of mass" or "balance point" of the function over the interval, and has applications in physics, engineering, economics, and more. fmin ≤ avg(f) ≤ fmax

This property can be used to prove useful inequalities and approximations in various fields. The formula for the average value of a function on an interval [a,b] is: avg(f) = 1/(b-a) * ∫[a,b] f(x) dx.

Using this formula, we can find the average value of f(x) = x² - 11 on [0,6] as: avg(f) = 1/(6-0) * ∫[0,6] (x² - 11) dx

= 1/6 * [x³/3 - 11x]_0^6

= 1/6 * [(216/3) - (66)]

= -1/3

To know more about function , refer here:

https://brainly.com/question/29162580#

#SPJ11

The statements that are supported by the data are:

The data for Admiral Autos shows greater variability.

To answer this question, we need to analyze the data in the table. Here are the statements that can be supported by the data:

The mean number of cars sold in a month is the same at both dealerships:

We can calculate the mean number of cars sold for each dealership by adding up the total number of cars sold and dividing by the number of months.

For Admiral Autos, the mean is (49+19+15+10+17)/5 = 22, and for Countywide Cars, the mean is (17+14+10+15+15)/5 = 14.2.

Therefore, this statement is false.

The median number of cars sold in a month is the same at both dealerships:

To find the median, we need to order the data from lowest to highest and find the middle value.

For Admiral Autos, the ordered data is 10, 15, 17, 19, 49, and the median is 17.

For Countywide Cars, the ordered data is 10, 14, 15, 15, 17, and the median is 15.

Therefore, this statement is false.

The total number of cars sold is the same at both dealerships: We can add up the total number of cars sold for each dealership to see if they are equal.

For Admiral Autos, the total is 110, and for Countywide Cars, the total is 71.

Therefore, this statement is false.

The range of the number of cars sold is the same for both dealerships: The range is the difference between the highest and lowest values.

For Admiral Autos, the range is 49-10=39, and for Countywide Cars, the range is 17- 10 = 7.

Therefore, this statement is false.

The data for Admiral Autos shows greater variability: Variability refers to the spread or dispersion of the data.

One way to measure variability is to calculate the standard deviation.

For Admiral Autos, the standard deviation is 15.47, and for Countywide Cars, the standard deviation is 2.6.

Therefore, this statement is true.

For similar question on standard deviation.

https://brainly.com/question/24298037

#SPJ11

The prism is a triangular prism, therefore, the volume of the prism is calculated as: 581 cm³.

The volume of the triangular prism = base area * length of the prism.

This means that, we will find the area of the base of the prism and also multiply it by the length of the prism.

Base area of the prism = 1/2(base)(height)

Base area of the prism = 1/2(10)(8.3)

Base area of the prism = 41.5 cm²

The length of the prism = 14 cm.

Plug in the values:

Volume of the triangular prism = 41.5 * 14

= 581 cm³

Learn more about the Volume of a Prism on:

https://brainly.com/question/31637586

#SPJ1

Answer: The answer is (d) 700 miles. 35 inches on the map represents 700 miles in actual distance

Step-by-step explanation:

This is a Unitary method problem.

If 25 inches on the map represents 500 miles in actual distance, then we can write:

25 inches / 500 miles = 35 inches / x miles

where x is the number of miles represented by 35 inches on the map.

To solve for x, we can cross-multiply and simplify:

25 inches * x miles = 500 miles * 35 inches

25x = 17500

x = 700

Therefore, 35 inches on the map represents 700 miles in actual distance.

Learn more about Unitary Method :

https://brainly.com/question/23423168

https://brainly.com/question/24587372

The requreid 3,000 liters of leachate escape from the landfill each year.

The total amount of rain that falls on the landfill each year is:

500 x 150 = 75,000 liters of water

60 percent of the rain is runoff, so the amount of water that enters the landfill is:

75,000 liters x 0.4 = 30,000 liters

If the landfill has a 90 percent effective leachate collection system, then the amount of leachate that escapes is:

30,000 liters x (1 - 0.9) = 3,000 liters

Therefore, 3,000 liters of leachate escape from the landfill each year.

Learn more about percentages here:

https://brainly.com/question/29306119

#SPJ1

No, the use of the binomial distribution may not be appropriate for calculating the probability that exactly six 18-20 year olds consumed alcoholic beverages in a random sample of ten.

The binomial distribution assumes that the trials are independent, there are only two possible outcomes (success or failure), and the probability of success remains constant throughout the trials. In the case of consuming alcoholic beverages, the assumption of independence may not hold, as one person's decision to consume alcohol may influence another person's decision. Additionally, the probability of consuming alcohol may not remain constant throughout the sample, as some people may have stronger tendencies or preferences for drinking than others.

A more appropriate distribution for this scenario may be the hypergeometric distribution, which takes into account the finite population size (i.e. the total number of 18-20 year olds from which the sample is drawn) and the varying probabilities of success (i.e. the varying number of individuals in the population who consume alcohol).

Learn more about probability here:

brainly.com/question/30034780

#SPJ11

The discount is of 54.30 and the sale price is 126.69

If we have a discount of X (a percentage) and an original price P, then the discount is:

D = P*X/100%

And the sale price is:

S = P*(1 - X/100%)

Here the original price is 180.99 and the percentage is 30%.

Replacing that we will get.

D = 180.99*(30%/100%) = 180.99*0.3 = 54.30

S = 180.99*(1 - 30%/100%) = 126.69

Learn more about discounts at:

https://brainly.com/question/7459025

#SPJ1

The individual events are dependent. The probability of the combined event is  4.3%.

The events are dependent because the probability of drawing a red candy on the second draw depends on whether a red candy was drawn on the first draw.

Let R1 be the event that a red candy is drawn on the first draw, and R2 be the event that a red candy is drawn on the second draw. The probability of R1 is 13/55 since there are 13 red candies out of 55 total. However, the probability of R2 given that R1 has occurred is 12/54, since there will be one less red candy and one less candy in total.

Therefore, the probability of both events occurring is:

P(R1 and R2) = P(R1) * P(R2 given R1)

= (13/55) * (12/54)

= 0.043 or 0.0432 (rounded to three decimal places)

Therefore, the probability of drawing and immediately eating two red candies in a row from the bag is 0.043 or 4.3% (rounded to three decimal places).

For more questions like Probability click the link below:

https://brainly.com/question/30034780

#SPJ11

The individual events are independent. The probability of the combined event is 0.043. The correct answer is A.

For two events to be independent, the occurrence of one event should not affect the probability of the other event. In this case, randomly drawing and immediately eating two red pieces of candy from a bag containing 13 red pieces out of 55 total pieces.

Since the first candy is immediately eaten and removed from the bag before the second candy is drawn, the probability of drawing a red candy on the second draw is still the same as the probability of drawing a red candy on the first draw.

The probability of drawing a red candy on the first draw is 13/55 since there are 13 red candies out of 55 total candies.

The probability of drawing a red candy on the second draw, assuming the first candy was red and removed, is also 13/55. The events are independent because the probability of the second draw is unaffected by the outcome of the first draw.

To find the probability of the combined event (drawing and immediately eating two red candies in a row), we multiply the probabilities of the individual events:

P(Combined Event) = P(Draw Red Candy on 1st Draw) * P(Draw Red Candy on 2nd Draw)

P(Combined Event) = (13/55) * (13/55)

P(Combined Event) ≈ 0.043 (rounded to three decimal places)

Therefore, the individual events are independent, and the probability of the combined event is approximately 0.043.

If the individual events were dependent, it would mean that the probability of the second event is influenced by the outcome of the first event. However, in this scenario, the events are independent as explained in part A. Therefore, the probability of the combined event is 0.043, and the correct answer is A.

For more questions like Probability click the link below:

brainly.com/question/30034780

#SPJ11

Both Lagrange and Newton forms are valid methods to find the interpolating polynomial. Choose the most convenient form based on the problem at hand.

To find the polynomial of least degree that interpolates the given data points, we can use (a) Lagrange form and (b) Newton form.

(a) Lagrange form:

1. Calculate the Lagrange basis polynomials L0(x), L1(x), L2(x), and L3(x).
2. Multiply each basis polynomial by its corresponding y-value.
3. Sum the results to obtain the final Lagrange polynomial.

(b) Newton form:

1. Calculate the divided differences for the given data points.
2. Determine the Newton basis polynomials N0(x), N1(x), N2(x), and N3(x).
3. Multiply each basis polynomial by its corresponding divided difference.
4. Sum the results to obtain the final Newton polynomial.

For more about interpolating polynomial:

https://brainly.com/question/26460790

#SPJ11

The value of ssI2 dV ≈ 0.061.

The region W is described as the wedge in the first octant that is cut from the cylindrical solid v2+22 < 1 by the planes y = x and x = 0.

First, we can sketch the region W in the xy-plane:

    |

    | /

    |/_____

    0 1

The region is bounded by the curves y = x and y = √[tex](1 - x^2/2)[/tex], which can be found by setting [tex]v^2 + 2^2 = 1[/tex] and solving for v as a function of x. We can set up the integral as follows:

ssI2 dV = ∫∫∫W 2 dV

We can use cylindrical coordinates, where v = r cosθ and 2 = r sinθ, and the limits of integration are 0 ≤ r ≤ √2, 0 ≤ θ ≤ π/4, and r cosθ ≤ x ≤ √[tex](1 - r^2 sin^2\theta)[/tex]. The integrand is 2, so it is constant and can be factored out of the integral:

ssI2 dV = 2 ∫[tex]_0^{(\pi/4)[/tex] ∫[tex]_0^\sqrt2[/tex] ∫[tex]_(r cos\theta)^\sqrt(1 - r^2 sin^2\theta)[/tex] r dz dr dθ

We can integrate with respect to z first:

ssI2 dV = 2 ∫[tex]_0^{(\pi/4)[/tex] ∫[tex]_0^\sqrt2} r(\sqrt(1 - r^2 sin^2\theta) - r cos\theta)[/tex] dr dθ

Next, we can use the substitution u = 1 - [tex]r^2 sin^2\theta[/tex], du = -2r sinθ cosθ dr, to simplify the inner integral:

ssI2 dV = 2 ∫[tex]_0^{(\pi/4)[/tex] ∫[tex]_0^\sqrt 2 (1 - u)^{(1/2)[/tex] du dθ

We can integrate with respect to u using the substitution u = [tex]sin^2[/tex]φ, du = 2 sinφ cosφ dφ:

ssI2 dV = 2 ∫[tex]_0^{(\pi/4)[/tex] ∫[tex]_0^{(\pi/2)} (1 - sin^2[/tex]φ)[tex]^{(1/2)[/tex] sinφ cosφ dφ dθ

The integrand simplifies using the identity [tex]sin^2[/tex]φ + [tex]cos^2[/tex]φ = 1, so sinφ cosφ = 1/2 sin2φ:

ssI2 dV = ∫[tex]_0^{(\pi/4)[/tex] ∫[tex]_0^{(\pi/2)} sin^2[/tex]φ dφ dθ

We can use the identity [tex]sin^2[/tex]φ = (1 - cos2φ)/2 and integrate with respect to φ and θ:

ssI2 dV = ∫[tex]_0^{(\pi/4)[/tex] [φ/2 - 1/4 sin2φ][tex]_0^{(\pi/2)} d\theta[/tex]

= ∫[tex]_0^{(\pi/4)[/tex] (π/4 - 1/4) dθ

= (π/16 - 1/8) π/4

≈ 0.061

Rounding to three decimal places, we get ssI2 dV ≈ 0.061.

To know more about cylindrical coordinates, refer to the link below:

https://brainly.com/question/29481539#

#SPJ11

C → B is the Chomsky Normal Form (CNF) of the given grammar.

We have,

To convert the given context-free grammar into Chomsky Normal Form (CNF):

Step 1: Eliminate ε-productions

The given grammar has one ε-production: y → ε.

Replace each occurrence of y in the other productions with ε, obtaining:

s → asb | b | a | sbs

y → b | a

Step 2: Eliminate unit productions

The given grammar has no unit productions.

Step 3: Convert all remaining productions into the form A → BC

The remaining productions are already in form A → BC or A → a.

Step 4: Convert all remaining productions into the form A → a

We need to convert the production y → b into the form y → CB, where C is a new nonterminal symbol.

Then we add the production C → b, and replace each occurrence of y by C in the other productions.

This gives:

s → ASB | B | A | SBS

A → AY | AYB | AYC | B | AYCB | AYBSC | ε

B → BZ | A | AS | ZB | ε

S → BB | ε

Y → C

C → B

Thus,

C → B is the Chomsky Normal Form (CNF) of the given grammar.

Learn more about Chomsky Normal Form here:

https://brainly.com/question/30545558

#SPJ1

Based on the unit rate, if you buy 2 oranges with £1 coin and get 52p change, the cost of 1 orange is 24p.

The unit rate refers to the ratio of one quantity or value compared to another.

The unit rate is computed as the quotient of the total value divided by the number of items in the data set.

We can also refer to the unit rate as the slope, gradient, or constant of proportionality.

The total amount that you have = £1

The change obtained after the transaction = 52p

The amount spent for 2 oranges = 48p (£1 - 52p)

The unit rate of each orange = 24p (48p ÷ 2)

Learn more about the unit rate at https://brainly.com/question/4895463.

#SPJ1

If I buy 2 oranges with £1 coin and get 52p change, how much is it for 1 orange?

The probability of the given event (drawing any marble from the jar) is 1, since you are guaranteed to draw a marble.

The probability of drawing a red marble is 30/62, since there are 30 red marbles out of a total of 62 marbles in the jar. Similarly, the probability of drawing a blue marble is 32/62. Given the jar has 30 red marbles (numbered 1-30) and 32 blue marbles (numbered 1-32), there are a total of 62 marbles in the jar. Since a marble is drawn at random, the probability of each event can be calculated as follows:
If the event is drawing a red marble:
Probability = (Number of red marbles) / (Total number of marbles) = 30/62
If the event is drawing a blue marble:
Probability = (Number of blue marbles) / (Total number of marbles) = 32/62
In both cases, the fractions are already reduced to their simplest form.

Learn more about probability here

https://brainly.com/question/25839839

#SPJ11

The length of the rectangular prism with height and width both of 9 cm and a surface area of 432 sq cm is 7.5 cm

A rectangular prism is also known as a cuboid and it has 6 faces made of rectangles.

S = 2(lb + bh + hl)

where l is the length

b is the breadth

h is the height

S is the surface area

Given,

h = 9 cm

b = 9 cm

S = 432 sq cm

S = 2 (9l + 9l * 81)

432 = 2 (18l + 81)

216 = 18l + 81

18l = 216 - 81

18l = 135

l = 7.5 cm

Learn more about Cuboid:

https://brainly.com/question/29568631

#SPJ4

The matrix for d11 = 5  and d21 = 11

For the matrix [1, 2; 3, 4] × [1, -1; 2, 1] = [d11, d12; d21, d22]

d11 = 1×1 + 2×2

= 1 + 4

=5

d21 = 3×1 + 4×2

= 3 + 8

= 11

The above answer is based on the question below;

solve the matrix

[1, 2; 3, 4] × [1, -1; 2, 1] = [d_11, d_12; d_21, d_22]

d_11 =                     d_12 = 1

d_21 =                   d_22 = 1

Find more exercises on solving matrix;

https://brainly.com/question/28180105

#SPJ1

For the given function : (f o g)(x) = x, (g o f)(x) = x/5, (f o g)(5) = 6, (g o f)(5)  = 1.64.

Now,

a.f(g(x)) = 5((x+4)/5) - 4 = x

b. (g o f)(x) =
g(f(x)) = (5x-4 + 4)/5 = x/5

c. (f o g)(5) =
f(g(5)) = f((5+4)/5) = f(1.8) = 5(1.8) - 4 = 6

d. (g o f)(5) =
g(f(5)) = g(5*5-4) = g(21/5) = (21/5 + 4)/5 = 1.64

To learn more about Chain Rule

https://brainly.com/question/22965451

#SPJ11

A) An equation to represent Janice’s account balance after t years is A = 1200[tex](1 + 0.035/52)^{(52t)[/tex]

B) It will take approximately 6 years for the account to reach $1500.

A) To find the account balance after t years, we can use the formula for compound interest:

A = P[tex](1 + r/n)^{(nt)[/tex]

Where:

A = the account balance after t years

P = the principal (initial investment) = $1200

r = the annual interest rate in decimal form = 0.035

n = the number of times the interest is compounded per year (weekly in this case) = 52

t = the number of years

Substituting the given values, we get:

A = 1200[tex](1 + 0.035/52)^{(52t)[/tex]

B) To determine how many years it will take for the account to reach $1500, we can set A equal to 1500 and solve for t:

1500 = 1200[tex](1 + 0.035/52)^{(52t)[/tex]

1.25 = [tex](1.000673)^{52t[/tex]

ln(1.25) = 52t ln(1.000673)

t = ln(1.25)/(52 ln(1.000673))

Using a calculator, we find that it will take approximately 6 years for the account to reach $1500. Note that we rounded to the nearest year as instructed.

To learn more about equation click on,

https://brainly.com/question/30643793

#SPJ1

If this portion leads to two segments that come to a point, and from that point, there is a height of 3 meters labeled.  The total area is 45 square meters.

Since the rectangle has a length of 4 meters and a width of 9 meters we need to find the area of rectangle

Area of rectangle  = length × width

Area of rectangle = 4 m × 9 m

Area of rectangle = 36 m^2

Since the  triangle has a base of 6 meters (9 meters - 3 meters o) and a height of 3 meters we need to find the Area of triangle

Area of triangle  = (1/2) × base × height

Area of triangle  = (1/2) × 6 m × 3 m

Area of triangle  = 9 m^2

Now let find the total area of the composite figure

Total area = Area  of rectangle + Area of triangle

Total area = 36 m^2 + 9 m^2

Total area = 45 m^2

Therefore the total area of the figure is 45 square meters.

Learn more about total area here:https://brainly.com/question/28020161

#SPJ1

Answer:

-12

Step-by-step explanation:

Show below in the image.

Answer: -12

Step-by-step explanation:

plug in 4 into the function

instead of it being just f(x)=-x-8 it will be f(4)= -4-8

When you evaluate it, it will add up to -12

The value of k is given as follows:

k = 82º.

The middle segment of the angle bisects the larger angle. A bisection means that the larger angle is divided into two smaller angles of equal measure.

The angle measures are given as follows:

Hence the value of k is obtained as follows:

k = 82º.

More can be learned about angle measures at brainly.com/question/25215131

#SPJ1

The area of the rectangular animal pen with fencing of 200 m with a length of 60 m is 2400 sq m

Perimeter refers to the length of the boundary of a given shape.

Perimeter = 2(l + b)

where l is the length

b is the breadth

Given,

Perimeter = 200 m

l = 60 m

200 = 2(60 + b)

100 = 60 + b

b = 100 - 60

b = 40 m

The other side of the rectangle is 40 m.

The area is the expanse covered by a shape

Area = l * b

= 60 * 40

= 2400 sq m

Learn more about Area:

https://brainly.com/question/24487155

#SPJ4

The solution is, 10.8 kg. does the teams soft balls weigh in total.

Here, we have,

given that,

yalianny and gabby are training for softball. during a break in practice they found that one softball weighs 180 grams. the team has a total of 60 soft balls.

now, we have to find that  how many kilograms does the teams soft balls weigh in total.

so, to get the total weight we have to multiply 60 with 180.

as, we have,

one softball weighs 180 grams

and, the team has a total of 60 soft balls.

so total weight = 180 * 60

                         =10800 gm.

                         =10.8 kg.

Hence, The solution is, 10.8 kg. does the teams soft balls weigh in total.

To learn more on multiplication click:

brainly.com/question/5992872

#SPJ1

The requried for a system of the solution by elimination options B and C is not allowed.

To use the elimination method, you can add or subtract the equations to eliminate one of the variables. This means that you can multiply one or both of the equations by a constant before adding or subtracting them.

Option A is allowed since you can multiply equation 1 by 2 to get 4x - 6y = 24 and multiply equation 2 by 3 to get -3x + 6y = 39, and then add the new equations to eliminate y.

Option B is not allowed since we can cant multiply the left side of equation 2 by .

Option C is also not allowed since we can multiply equation 2 by -2 to get 2x - 4y = -26, but then we cannot add this result to equation 1.

Therefore, Options B and C are not allowed.

Learn more about the system of the solution here:

https://brainly.com/question/26207592

#SPJ1

Answer:

-6

Step-by-step explanation:

The y-intercept of a linear equation is the value of y when x (or t in this case) is equal to zero. To find the y-intercept of the equation y=3t-6, we can set t=0 and solve for y:

y = 3(0) - 6

y = -6

Therefore, the y-intercept of the equation y=3t-6 is -6.