10 + what equals -6.2





PLEASE HELP ME ASAP!!!!!!!!!!!!;))

Answer:

84 seconds

Step-by-step explanation:

Because if you divide all of that you would get that answer

Answer:

please see answers below

Step-by-step explanation:

1) 5/10 X 5 = (5 X 5)/ 10 = 25/10 = 2.5

2) 3/5 X 10 = (3 X 10) /5 = 30/5 = 6

3) 5/6 X 3 = (5 X 3)/6 = 15/6 = 5/2 = 2.5

4) 5/6 X 12 = (5 X 12)/6 = 60/6 = 10

5) 3/5 X 20 = (3 X 20)/5 = 60/5 = 12

6) 2/3 X 8 = (2 X 8)/3 = 16/3

7) 2/9 X 3 = (2 X 3)/9 = 6/9 = 2/3

8) 4/7 X 21 = (4 X 21)/7 = 84/7 = 12

The limit is 0.

We will first understand what limit is and ten calculate it :

A limit is a boundary beyond which something may not extend. Limit has many meanings such as "the point at which something stops", or "a boundary". It can also mean "to restrict" or "restrict".

We can use the word "limit" to describe what we don't want, but if it is to get used with time-sensitive items we have to make sure it's accurate.

To evaluate the limit, we can use L'Hopital's rule since we have an indeterminate form of "infinity/infinity". Differentiating the numerator and denominator with respect to x, we get:

lim x→[infinity] 7 - x / 7(2ex) = lim x→[infinity] (-1) / (14ex)

Since the denominator goes to infinity as x goes to infinity, and the numerator remains constant, we can see that the limit is equal to zero:

lim x→[infinity] 7 - x / 7(2ex) = lim x→[infinity] (-1) / (14ex) = 0

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Answer:

4x-5y=10

Step-by-step explanation:

The least possible value of the area of square T is 49 i.e., the correct answer is option (C) 49, representing the least possible value of the area of square T.

The least possible value of the area of square T can be determined by analyzing the relationship between the two squares and their perimeters.

Let's denote the side length of square S as 'a'.

Since the perimeter of square S is 40, each side of the square has a length of 10 (40 divided by 4).

Square T is inscribed in square S, which means that its corners touch the sides of square S.

To find the least possible value of the area of square T, we need to consider the scenario where square T is the smallest possible square that can be inscribed in square S.

In this case, the sides of square T are parallel to the sides of square S, and the corners of square T coincide with the midpoints of the sides of square S.

Since square T is inscribed in square S, the diagonal of square T is equal to the side length of square S.

Using the expression of Pythagorean theorem, we can calculate the length of the diagonal of square T:

Diagonal of square T = √(\(10^2 + 10^2\)) = √200 = 10√2

The side length of square T can be found by dividing the diagonal length by √2:

Side length of square T = 10√2 / √2 = 10

Therefore, the area of square T is (side length)^2 = \(10^2\) = 100.

However, we are looking for the least possible value of the area of square T.

Since the answer choices are given, we can see that the smallest possible area is 49, which corresponds to option (C).

Hence, the correct answer is option (C) 49, representing the least possible value of the area of square T.

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Step-by-step explanation:

The area of a parallelogram is height * base

See diagram

area = 6 sin 60   *  8 =  ~  41.57 units^2

Triangle ABC, we are given the measure of angle A as 30 degrees, the length of side AC as 10.7 cm, and the length of side BC as 6.5 cm.

To work out the value of sin(ABC), we can use the trigonometric ratio of the sine function.

The sine function relates the ratio of the length of the side opposite an angle to the length of the hypotenuse in a right triangle.

In the given information, we don't have a right triangle or the length of the side opposite angle ABC.

Without this information, it is not possible to calculate the value of sin(ABC) accurately.

If you have any other information regarding the triangle, such as the length of side AB or the measure of angle B or C, please provide it so that I can assist you further in calculating sin(ABC).

We may utilise the sine function's trigonometric ratio to get the value of sin(ABC).

The sine function connects the ratio of the hypotenuse length of a right triangle to the length of the side opposite an angle.

A right triangle or the length of the side opposite angle ABC are absent from the provided information.

The value of sin(ABC) cannot be reliably calculated without these information.

Please share any more information you may have about the triangle, such as the length of side AB or the size of angles B or C, so I can help you with the calculation of sin(ABC).

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Answer: z=2

Step-by-step explanation:

2 x 2 = 4 + 3 = 7

Answer: Okay, the answer is z=2.

Step-by-step explanation: Step 1: Simplify the both sides of the equation: 2z+3=7.

Step. 2: Subtract 3 from the both sides: 2z+3−3=7–3.

Last but not least is step 3. Divide the both sides by 2: 2z/2=4/2. So you get z=2. I hoped my step-by-step explanation formula substitution is very helpful, please mark me as Brainliest, and have a happy holidays!!!!!!! :D

Given:

A table is given

Required:

To calculate mean of the data

Explanation:

We know the formula to calculate mean

Required answer:

75

Answer:

I think it is -15a + 65 = 65 + (-15a)

Step-by-step explanation:

Answer:

a^4

Step-by-step explanation:

First evaluate the quantity inside the parentheses:  (a^(-3)).

Then raise this result to the power -1:

(a^(-3))^(-1) = a^4

Answer:

a^3

Step-by-step explanation:

1/a^-1 a^-2

a^-1a^-2= a^-3

1/a^-3

1/1/a^3

a^3/1

a^3

I think that it is the 2nd one and the 5th one.

I hope that this helps! :)

Answer:

Yes

Step-by-step explanation:

Because I can assist you hit my inbox

Answer:

help you with what?

Step-by-step explanation:

post the question and I am probably 90% sure I can answer it for you I just need to know what the question is . if you've already got it done then no need to answer back .

Answer:

2500

Step-by-step explanation:

500*5

answer: 15x−5y=1

I took a test and that was answer, wish I could be more help.

The anti derivative of the function eˣ² is eˣ²/2x.

The given function is;  eˣ².

To find the anti derivative of the function, integrate the function with respect to x.

Let y = eˣ²

Integration of exponential function remains same but applying the chain rule, the derivative of the power of exponent comes at the denominator.

∫y. dx = ∫eˣ² .dx.

∫eˣ² .dx. = eˣ²/(d/dx)x²

∫eˣ² .dx. =  eˣ²/2x

Thus, the anti derivative of the function is found as eˣ²/2x.

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The recursive formula in this case is;

Arithmetic, t0=15

and tn=2.8+tn−1

where n≥1

Option A

A recursive formula is a formula that defines a sequence of values in terms of its previous values. It provides a way of defining a sequence in a compact form, with each term of the sequence depending on one or more preceding terms.

In mathematics, recursive formulas are often used to define sequences. We can see that in this sequence, the first term is 15 and the common difference is obtained by simple subtraction .

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Part 2: The estimated intercept and slope (A) and the standard errors of the estimated coefficients (D) will change as a result of entering each observation twice. Part 3: The regression program predicts the dependent variable Y based on the independent variable X. The intercept term is 33.97, and the slope term is 69.53. The standard error of the regression (SER) is not provided and should be filled in. The coefficient of determination (R2) is 0.81, indicating that 81% of the variability in Y can be explained by the linear relationship with X.

Part 2:

The estimated intercept and slope (A) and the standard errors of the estimated coefficients (D) will change as a result of entering each observation twice. The intercept and slope estimates will be affected because the doubled observations will introduce more data points, leading to a different estimation of the regression line. The standard errors of the estimated coefficients will also change because they are calculated based on the variance of the residuals, and the doubled observations will alter the residuals.

Part 3:

Using the 266 observations, the regression program will produce the following results:

Y = 33.97 + 69.53X

SER = (original SER) x √2

R2 = 0.81

The standard error of the regression (SER) will change by multiplying the original SER by the square root of 2, since doubling the observations will decrease the variability in the residuals. The R2 value will remain the same because it represents the proportion of the variance in the dependent variable explained by the independent variable(s), and doubling the observations does not affect this relationship.

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Answer:

what graph?...........

The absolute maximum bending moment developed on the span of a 30 m simple span RC girder over a bridge due to the moving loads shown in Fig.

Q. S(b) is 1350 kN-m.

According to the loading arrangement, a UDL of 10 kN/m is applied over the entire span, and a concentrated load of 30 kN is applied at the centre of the span.

There are a total of 7 equal panels, each of which has a length of 30 m / 7 = 4.285 m. To determine the maximum moment due to a UDL, it is multiplied by the moment of the uniformly distributed load (w) acting over the span at the centre.

Therefore, we have; Maximum moment due to UDL = wL^2 / 8= 10 x 30^2 / 8= 1125 kN-m

Moment due to a concentrated load at the centre of the span = WL/4= 30 x 30/4= 225 kN-m

Therefore, the absolute maximum bending moment developed on the span of a 30 m simple span RC girder over a bridge, due to the moving loads shown in Fig.

Q. S(b) is;1125 kN-m + 225 kN-m= 1350 kN-m

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Answer:

y ≈18.8

Step-by-step explanation:

Since this is a right triangle we can use the Pythagorean theorem

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

y^2 +18^2 = 26^2

y^2 +324=676

y^2 = 676-324

y^2 =352

Taking the square root of each side

sqrt(y^2) = sqrt(352)

y is approximately 18.76

y ≈18.8

Answer:

x > 1

Step-by-step explanation:

Subtract 3 from both sides

8x + 3 - 3 > x + 10 - 3

Simplify

8x > x + 7

Subtract x from both sides

8x - x > x + 7 - x

Simplify

7x - 7

Divide both sides by 7

7x/7 > 7/7

Simplify

x > 1

Answer: The answer is C. ( 6, -5)

Step-by-step explanation:

In this problem, we need to find the equation and the graph of a parabola given the focus and the directrix.

Sometimes it's best to start with graphing the given information to determine if the graph is a horizontal or vertical parabola. So, we'll have:

Since the focus is always inside the parabola and the directrix is outside the parabola, we know this will be a vertical parabola. Depending on the text, this standard formula may look different. For our purposes, the standard form of a vertical parabola is:

Where (h,k) is the vertex.

The vertex is typically the same distance from both the focus and the directrix, so we can find the distance between them and divide by 2.

The vertex will be at (-2,3):

Now we can substitute the vertex into our standard form knowing (h,k) = (-2, 3):

Next, we need to find the value of p for our equation.

P is the distance from the vertex to the focus. Since our vertex is at (-2,3) and our focus is at (-2,4), the difference between the y-values shows a distance of 1.

Since p=1,

Our final graph is:

i) Using the explicit method, we can use the forward difference approximation for the time derivative and the central difference approximation for the spatial derivative. ii) Using the Crank-Nicolson method, we can use a combination of forward and backward difference approximations for the time derivative and the central difference approximation for the spatial derivative.

To calculate a finite-difference solution of the given equation, we will use both an explicit method and the Crank-Nicolson method. Let's calculate the solutions for each case:

i) Explicit method:

Using the explicit method, we can use the forward difference approximation for the time derivative and the central difference approximation for the spatial derivative.

Given: au/auôt = (\(U_{i,j\)+1 - \(U_{i,j\))/Δt

and: au/aux² = (\(U_{i+1,j\) - 2\(U_{i,j\) + \(U_{i-1,j\))/Δx²

For 0 ≤ x ≤ 1, Δx = 0.1, and St = 0.001, we have:

Δx = 0.1

Δt = 0.001

Using the explicit method, we can update the solution \(U_{i,j\) as follows:

\(U_{i,j+1\) = \(U_{i,j\) + (St/Δx²)(\(U_{i+1,j\) - 2\(U_{i,j\) + \(U_{i-1,j\)) + StSin(\(x_i\))

Performing the calculations for two time steps:

Step 1: j = 0

Initialize \(U_{i\),0 = 0 for 0 ≤ x ≤ 1

Apply the boundary conditions \(U_{0,j\) = 0 and \(U_{8,j\) = 0

Step 2: j = 1

Calculate \(U_{i,1\) using the update equation

Apply the boundary conditions \(U_{0,j\) = 0 and \(U_{8,j\) = 0

ii) Crank-Nicolson method:

Using the Crank-Nicolson method, we can use a combination of forward and backward difference approximations for the time derivative and the central difference approximation for the spatial derivative.

Given: au/auôt = (\(U_{i,j+1\) - \(U_{i,j-1\))/(2Δt)

and: au/aux² = (\(U_{i+1,j\) - 2\(U_{i,j\) + \(U_{i-1,j\))/Δx²

For 0 ≤ x ≤ 1, Δx = 0.1, and St = 0.001, we have:

Δx = 0.1

Δt = 0.001

Using the Crank-Nicolson method, we can update the solution \(U_{i,j\) as follows:

\(U_{i,j+1\) - \(U_{i,j-1\) = (St/2Δx²)(\(U_{i+1,j\) - 2\(U_{i,j\) + \(U_{i-1,j\)) + (St/2)(Sin(\(x_i\)) + Sin(\(x_i\)))

Performing the calculations for two time steps:

Step 1: j = 0

Initialize \(U_{i,0\) = 0 for 0 ≤ x ≤ 1

Apply the boundary conditions \(U_{0,j\) = 0 and \(U_{8,j\) = 0

Step 2: j = 1

Calculate \(U_{i,1\) using the update equation

Apply the boundary conditions \(U_{0,j\) = 0 and \(U_{8,j\) = 0

Please note that the specific calculations and solution values depend on the number of grid points and time steps used. The above explanation provides a general approach to solving the equation using finite-difference methods.

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The answer to part (c) is 98 and 2 percent.

a. To compute the confidence interval use a Normal distribution.

b. With 98% confidence the population mean minutes of concentration is between 35.464 minutes and 39.536 minutes.

c. If many groups of 106 randomly selected members are studied, then a different confidence interval would be produced from each group.

About 98 percent of these confidence intervals will contain the true population mean minutes of concentration and about 2 percent will not contain the true population mean minutes of concentration.

Solution:

It is given that the researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture.

The study included 106 students who averaged 37.5 minutes concentrating on their professor during the hour lecture.

The standard deviation was 13.2 minutes.

Since the sample size is greater than 30 and the population standard deviation is not known, the Normal distribution is used to determine the confidence interval.

To find the 98% confidence interval, the z-score for a 99% confidence level is needed since the sample size is greater than 30.

Using the standard normal table, the z-value for 99% confidence level is 2.33, i.e. z=2.33.At a 98% confidence level, the margin of error, E is:    E = z * ( σ / sqrt(n)) = 2.33 * (13.2/ sqrt(106))=2.78

Therefore, the 98% confidence interval for the mean is: = (X - E, X + E) = (37.5 - 2.78, 37.5 + 2.78) = (34.722, 40.278)

Hence, to compute the confidence interval use a Normal distribution.With 98% confidence the population mean minutes of concentration is between 35.464 minutes and 39.536 minutes.

Therefore, the answer to part (b) is 35.464 minutes and 39.536 minutes.

If many groups of 106 randomly selected members are studied, then a different confidence interval would be produced from each group.

About 98 percent of these confidence intervals will contain the true population mean minutes of concentration and about 2 percent will not contain the true population mean minutes of concentration.

Therefore, the answer to part (c) is 98 and 2 percent.

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The null hypothesis for this scenario is that the valve performs to the specifications, i.e., the mean pressure produced by the valve is 5.9 lbs/square inch. The alternative hypothesis is that the valve does not perform to the specifications, i.e., the mean pressure produced by the valve is not 5.9 lbs/square inch.

To determine if there is sufficient evidence to reject the null hypothesis, we need to perform a hypothesis test.

Since the sample size is greater than 30 and we know the population standard deviation, we can use a z-test. We can calculate the test statistic as:

z = (sample mean - population mean) / (population standard deviation / sqrt(sample size))

Plugging in the given values, we get:

z = (6.1 - 5.9) / (0.9 / sqrt(130)) = 2.33

Using a standard normal distribution table, we find that the probability of getting a z-value of 2.33 or greater is approximately 0.01.

Since this probability is less than the significance level of 0.05, we can reject the null hypothesis and conclude that there is sufficient evidence that the valve does not perform to the specifications.

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Answer:

Step-by-step explanation:

2x + 2 + 5x + 3 = 180

7x + 5 = 180

7x = 175

x = 25

Given data:

5/7 cup of butter to make 4 dozen cookies

? cup of butter to make 18 dozen cookies

Use a rule of three: