value of 3a – 5b when a = –4 and b = 2 .

Answer: the answer is x - -a/4 + 1/2

Step-by-step explanation:

The equation x-1/2-a/4=3a/4 is solved for x in terms or a the solution is x=6a+1

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

For that , we will try solving it first using the method of substitution in which we express one variable in other variable's form and then you can substitute this value in other equation to get linear equation in one variable.

Given;

The equation;x-1/2-a/4=3a/4

Now,

x-1/2-a/4=3a/4

(2x-2-a)/4=3a/4

4(2x-2-a)=12a

8x-8-4a=12a

8x-8=48a

8x=48a+8

x=6a+1

Therefore, the solution of equation will be x=6a+1

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The three unbiased estimators are the sample mean, sample variance, and sample proportion. These estimators provide unbiased estimates of the population mean, population variance, and population proportion, respectively.

There are several unbiased estimators commonly used in statistics, but three notable examples are the sample mean, the sample variance, and the sample proportion.

1. Sample Mean: When estimating the population mean, the sample mean is an unbiased estimator. It is calculated by taking the average of all the observations in a sample. Under certain conditions, such as random sampling, the sample mean provides an unbiased estimate of the population mean.

2. Sample Variance: When estimating the population variance, the sample variance is an unbiased estimator. It measures the dispersion of the data points around the sample mean. By dividing the sum of squared differences by the sample size minus one, the sample variance provides an unbiased estimate of the population variance.

3. Sample Proportion: When estimating the population proportion, the sample proportion is an unbiased estimator. It represents the proportion of a specific characteristic or outcome within a sample. If the sample is obtained randomly and meets certain conditions, the sample proportion provides an unbiased estimate of the population proportion.

These three unbiased estimators play crucial roles in statistical inference, allowing researchers to make inferences about population parameters based on sample data.

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Answer:

170 person r in the zoo so it depends

Answer: 185.7 miles

Step-by-step explanation:

To find the total distance, add the smaller distances together.

47.8 + 72 + 65.9 = 185.7

Answer:gamble that,on average,will leave a person with the same amount of money.

Step-by-step explanation:

Answer:

Vertical Line test

Step-by-step explanation:

If you can put a vertical line anywhere on the graph, and it doesn't touch more than one point, then it's a function. A function means there are no repeated x values.

We can simply find if a graph is a function or not by doing the line test.

Line Test on Graph

If the line intercepts only one point, that means the graph is a function.

If the line intercepts more than one point, it is not a function but rather a relation.

Example of graphs that are not functions

Example of graphs that are functions

If you have any questions, you can comment.

Answer: 18 dollars. edit: 18 dollars 3 plus the 15.

Step-by-step explanation:

Multiply the cost 15 by the percentage you want to tip in this example: 15 times .20

An acre is a unit of measurement used to quantify land area, and it is commonly used in the United States to measure the size of plots of land, farms, and estates. One acre is equal to 43,560 square feet.

To visualize an acre, imagine a rectangle that is approximately 208 feet by 209 feet, or a square that is approximately 209 feet on each side.

To convert acres to square feet, you can use the following formula:

1 acre = 43,560 square feet

Therefore, to convert acres to feet, you can simply multiply the acre value by 43,560. For example, if you want to convert 5 acres to square feet, you can use the following formula:

5 acres x 43,560 square feet per acre = 217,800 square feet

So 5 acres is equal to 217,800 square feet.

It's worth noting that the acre is a unit of measurement used primarily in the United States, and other countries may use different units of measurement to quantify land area. For example, in the metric system, the hectare is commonly used to measure land area, with 1 hectare equal to 10,000 square meters (about 2.47 acres).

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Answer:

I did no math but just by looking at it am like 70 percent sure it's 6.2

Answer:

Ketchup

Step-by-step explanation:

The volume of a sphere with radius 10 units was found to be approximately 42 cubic units.

The volume of a sphere can be calculated using the formula:

V = (4/3) * π * r^3

Where, r is the radius of the sphere. In this case, the radius is 10 units, so we can plug in the values and calculate the volume:

V = (4/3) * π * 10^3 = 4184 cubic units

So, the approximate volume of the sphere with a radius of 10 units is 4184 cubic units.

Rounding off to the nearest whole cubic unit, 4184 cubic units becomes 42 cubic units.

Volume of a sphere is the amount of space inside a sphere.

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The initial 50 miles distance from the lighthouse and the N 30° W and N 40° W bearing of the ship before and after traveling due east, using the law of sines, indicates.

The law of sines states that in a triangle, the ratio of the length of a side to the sine of the angle opposite that side is the same for each of the three sides of the triangle.

The distance of the ship from the lighthouse = 50 miles

Bearing of the lighthouse from the ship = N 30° W

The direction in which the ship travels = due east

The new bearing to the lighthouse = N 40° W

In the triangle formed by the initial and new locations of the ship and the lighthouse, the interior angles, A, B, C are;

m∠A = 30° + 90° = 120°

m∠B = 90° - 40° = 50°

Therefore; m∠C = 180° - (120° + 50°) = 10°

Angle opposite the initial distance of the ship from the lighthouse = ∠B = 50°

The angle opposite the new distance of the ship from the lighthouse = m∠A = 120°

The law of sines indicate that we have;

\(\dfrac{50}{sin(50^{\circ})} = \dfrac{New \, distance}{sin(120^{\circ})}\)

50 × sin(120°) = The new distance of the lighthouse × sin(50°)

The new distance of the lighthouse = 50 × sin(120°)/(sin(50°)) ≈ 56.53

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The smallest number of eggs that could have been in the box is 1134

The problem is to find the smallest number of eggs that could have been in the box, given the remainder when taking them out by different numbers. Here are the moves toward tackling it:

Allow n to be the quantity of eggs in the container. Then we have the accompanying arrangement of congruences:

n ≡ 1 (mod 2)

n ≡ 1 (mod 3)

n ≡ 1 (mod 4)

n ≡ 1 (mod 5)

n ≡ 1 (mod 6)

n ≡ 0 (mod 7)

For this problem, we have k = 6 k = 6, a i = {1,1,1,1,1,0} a_i = {1,1,1,1,1,0}, M i = {1260,840,630,504,420,720} M_i = {1260,840,630,504,420,720}, and y i = {−1,−2,−3,-4,-5,-6} y_i = {-1,-2,-3,-4,-5,-6}.

Plugging these values into the formula and simplifying modulo 5040, we get:

n = (−1260 + −1680 + −1890 + −2016 + −2100 + 0) mod 5040

n = (−8946) mod 5040

n = (−3906) mod 5040

n = 1134 mod 5040

Therefore, the smallest number of eggs that could have been in the box is 1134

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Answer:

Step-by-step explanation:

Rewrite the equation as  

8(y+4)=m

Divide each term in 8(y+4)=m by 8

and simplify

y+4=\(\frac{m}{8}\)

Subtract  

4 from both sides of the equation

y=\(\frac{m}{8}\)−4

Answer:

y=3x

Step-by-step explanation:

Okay first you need to solve this. Distribute the 3 first to the parantheses and you get y+3=3x+3. Than you subtract 3 and get y=3x. Now you start at 0,0 the origin and go 3 units up and 1 unit to the right. Continue that until a line shows.  Same with the bottom. Go down 3 left one.

Answer:

i will add the pictures in order , desmos is a helpful way to graph

Step-by-step explanation:

i hope this helps

The expression that is equivalent to the one Shea wrote is b 5 x y x 5 x 2 +4

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

5(y + 2) + 2 shows the amount of money five friends paid for snacks at a basketball game

This means that

Amount = 5(y + 2) + 2

When expanded, we have

Amount = 5 * y + 5 * 2 + 2

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

The expression that is equivalent to the one Shea wrote is b 5 x y x 5 x 2 +4

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The area of the sector is A = π cm² and amplitude is a = 0.75 cm

Given data ,

The area of a sector is given by the formula:

A = (1/2) x r² x θ

where r is the radius of the sector and θ is the central angle in radians.

On simplifying , we get

A = π cm²

r = 1.5 cm

Substituting these values into the formula, we get:

π = (1/2) x (1.5)² x θ

π = (3/4) x θ

Solving for θ, we get:

θ = (4/3) x π

The amplitude of the sector is half of the radius, so:

amplitude = (1/2) x 1.5 cm = 0.75 cm

Hence , the amplitude of the sector is 0.75 cm

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The angle of elevation formed by the signal sent out to the plane and the ground near the tower is approximately 5.71 degrees.

The angle of elevation can be calculated using trigonometry. In this case, we have a right-angled triangle formed by the signal, the tower, and the ground. The height of the airplane (12 km) represents the opposite side of the triangle, while the distance from the tower to the airplane (2 km) represents the adjacent side.

To find the angle of elevation, we use the tangent function, which is defined as the ratio of the opposite side to the adjacent side. Therefore, the tangent of the angle of elevation can be calculated as opposite/adjacent, which is 12 km/2 km = 6.

To determine the angle itself, we can take the inverse tangent (arctan) of the tangent value. So, arctan(6) ≈ 81.87 degrees. However, this angle represents the angle between the signal and the ground, and we are interested in the angle between the signal and the horizontal plane. Therefore, we subtract 90 degrees from 81.87 degrees to get the angle of elevation near the tower.

Angle of elevation = 81.87 degrees - 90 degrees ≈ -8.13 degrees.

However, since the angle of elevation cannot be negative in this context, we take the absolute value of -8.13 degrees, which is approximately 8.13 degrees. Therefore, the angle of elevation formed by the signal sent out to the plane and the ground near the tower is approximately 8.13 degrees.

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Answer:

$6.40

Step-by-step explanation:

2.56 / 16 = 0.16
so 16 cents per oz
16 * 40 = 640

Answer:

since it composite and using five exponent and since it can be solve that way I would use 1,3,107,321! Hope this help

Step-by-step explanation:

Answer:

321^5 = (107*3)^5=107^5*3^5

Step-by-step explanation:

321^5 = (107*3)^5=107^5*3^5

= 14025517307 * 243

= 3408200705601

Expansion by factoring first does not quite make it easier numerically!

Answer: -135

Step-by-step explanation:

90 + 45 = 135

90 - 135 = -45

I hope this helps

The equivalent fractions for 2/3 is (3×2)/(3×3) = 6/9 and for  5/12 is (4×5)/(4×12) = 20/48.

A fraction is written in the form of p/q, where q ≠ 0.

Fractions are of two types they are proper fractions in which the numerator is smaller than the denominator and improper fractions where the numerator is greater than the denominator.

The equivalent fraction for 2/3 is (3×2)/(3×3) = 6/9.

The equivalent fraction for 5/12 is (4×5)/(4×12) = 20/48.

We have to multiply the same number to both the numerator and denominator to get equivalent fractions.

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Answer:

0

0.054

0.405

0.45

0.54

8

Step-by-step explanation:

Forecasting, prescriptive, predictive, descriptive, and causal are all types of analytics.

Descriptive analytics involves examining past data to understand what has happened in the past and to identify patterns and trends.

It provides insight into what has happened and why.

Predictive analytics involves analyzing past data and using statistical algorithms and machine learning techniques to predict what is likely to happen in the future.

It is used to forecast trends, behaviors, and outcomes.

Prescriptive analytics involves analyzing data and using optimization algorithms to determine the best course of action to achieve a specific goal or objective.

It is used to make decisions that will maximize outcomes or minimize risks.

Causal analytics involves identifying cause-and-effect relationships between different variables.

It is used to understand how changes in one variable may affect another, and to identify the root causes of a particular outcome or phenomenon.

Forecasting analytics involves using statistical methods and data analysis techniques to make predictions about future trends and events. It is used to estimate future demand, sales, or other variables based on past data and trends.

In summary,

Each of these types of analytics serves a unique purpose in the data analysis process and can be used to gain insights and make informed decisions.

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The cost of one apple is $0.70.

Let's assume that the cost of one apple is "a" dollars and the cost of one banana is "b" dollars. We can create two equations based on the information given:

4a + 9b = 12.70 ...(1)

8a + 11b = 17.70 ...(2)

To solve for "a", we can use elimination method by multiplying equation (1) by 8 and equation (2) by -4, so that the coefficients of "a" in both equations will be equal and opposite:

32a + 72b = 101.60

-32a - 44b = -70.80

Adding these two equations, we get:

28b = 30.80

Simplifying and solving for "b", we get:

b = 1.10

Now, we can substitute the value of "b" in equation (1) and solve for "a":

4a + 9(1.10) = 12.70

4a + 9.90 = 12.70

4a = 2.80

a = 0.70

Therefore, the cost of one apple is $0.70.

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