Can someone please help me ? ;-;

Classify the following triangle. Check all that apply

A. Right

B. Equilateral

C. Isosceles

D. Obtuse

E. Scalene

F. Acute

We are given a regression model: test score = 800 - 8(student-teacher ratio)

If the student-teacher ratio drops by 2, then the new ratio is (old ratio - 2).

So, the new predicted test score is:

test score = 800 - 8(new ratio)

          = 800 - 8(old ratio + (-2))

          = 800 - 8(old ratio) - 8(-2)

          = 800 - 8(old ratio) + 16

Therefore, the predicted effect on the test score is an increase of 16 points.

So, the answer is (d) the test score will increase by 16 points.

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Answer:

True

Step-by-step explanation:

Cos^-1   = 1/ cos = sec x

Answer: True

Step-by-step explanation:

     When the cos(ine) function is raised to the negative first power, we find the reciprocal. This will be the case for most functions and numbers.

Answer:

View attached graph.

Orange is the original graph

Green is the translation (rule a)

Purple is the reflection (rule b)

Step-by-step explanation:

Triangle LMN with vertices L(-7,4), M(-3,0), N(-8,1)

Rules:

(a) Translation :(x,y) -> (x + 5, y - 6)

(b) Reflection: in the line y = -x -> (-y , -x)

Rule A:

L' (-7 + 5, 4 - 6) = (-2,-2)

M' (-3 + 5, 0 - 6) = (2,-6)

N' (-8 + 5, 1 - 6) = (-3,-5)

Rule B:

L'' (-2,-2) -> (2,2)

M'' (2,-6) -> (6,-2)

N''(-3,-5) -> (5,3)

Hope this helps!

If customer wants an investment with rate of return of 7%, then to meet customer's requirements, the security must cost $17.86.

In order to find the cost of the security that meets the customer's requirements, we use the Dividend Discount Model (DDM). The DDM calculates the present value of future dividend payments based on the required rate of return.

The formula to calculate the cost of security is:

Cost of Security is = (Dividend)/(Required Rate of Return),

Substituting the values,

We get,

Dividend = $1.25

Required Rate of Return = 7% or 0.07 (in decimal),

So, the Cost-of-Security is = ($1.25)/(0.07) ≈ $17.86.

Therefore, the security must cost $17.86, in order to meet the requirement of customer.

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Answer: I can barley see that

Step-by-step explanation:

Answer:

give me brainliest plssss i need it

Step-by-step explanation:

It is important to carefully consider the given information and the specific equation being used in order to determine the appropriate method for solving for a specific side of a shape.
Without knowing the specific equation mentioned in the question, it is difficult to determine whether Andre or Mai's approach is correct. However, in general, the equation used to solve for a specific side of a shape depends on the information given about the other sides and angles of the shape.

If the equation involves the known values of angles and/or sides that are not the one being solved for, then either Andre or Mai's approach may be valid, depending on which side or angle is known.

However, if the equation only involves the unknown side and no other information about the shape is given, then neither approach would be correct. In such a case, additional information or equations would be needed to solve for the unknown side.

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The correct statement is c. The Adjusted R-squared is a measure used in multiple regression analysis that is between 0 and 1. It is different from the R-squared value in simple linear regression.

The Adjusted R-squared can decrease if the addition of another X regressor does not sufficiently lower the sum of squared residuals (SSR) relative to the impact of increasing the number of predictors (k). It measures the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size, rather than the ratio of the sum of squared residuals to the total sum of squares. It provides a measure of how well the regression model fits the data, and it ranges between 0 and 1. A value closer to 1 indicates that a higher proportion of the variance in the dependent variable is explained by the predictors.

Adding another X regressor to the multiple regression model can impact the Adjusted R-squared. If the additional regressor does not significantly contribute to reducing the sum of squared residuals (SSR) relative to the increase in the number of predictors (k), the Adjusted R-squared can decrease. This means that the added regressor does not improve the model's ability to explain the variance in the dependent variable adequately.

However, the Adjusted R-squared does not directly measure the ratio of the sum of squared residuals to the total sum of squares. Instead, it represents the proportion of the variance explained by the predictors, adjusted for the number of predictors and the sample size. It penalizes models with a large number of predictors that may overfit the data, thereby providing a more reliable measure of the model's goodness of fit.

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The correct answer is S = {A, D, D, I, T, I, O, N}.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, with 0 representing an impossible event and 1 representing a certain event. The probability of an event is calculated by dividing the number of ways the event can occur by the total number of possible outcomes.

The sample space is the set of all possible outcomes of an experiment or event.

In this case, the experiment is choosing one card from a set of eight labeled cards.

The sample space for this experiment is the set of all possible cards that can be chosen.

In the given problem, there are eight cards labeled A, D, D, I, T, I, O, N.

The sample space is the set of all possible cards that can be chosen, which is {A, D, D, I, T, I, O, N}.

This is because each card is distinct and can be chosen independently of the others.

Therefore, the correct answer is S = {A, D, D, I, T, I, O, N}.

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Answer: A( A,D, D,I, I,N,O,T)

Step-by-step explanation:

Order does not matter!!

The time she arrived at her destination is an illustration of time duration

She travelled for 19 hours, 28 minutes

The question implies that we calculate the time taken to complete the trip.

From the question, we have:

Start = 11:20 am Monday

End = 6:48 am Tuesday

So, the duration is:

Duration = End - Start

Substitute known values

Duration = 6:48 am Tuesday - 11:20 am Monday

Evaluate the difference

Duration = 19 hours, 28 minutes

Hence, she travelled for 19 hours, 28 minutes

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Answer: 19.6 feet

Step-by-step explanation:

Using the Pythagorean theorem,

\(x^2 +(x+6)^2 =48^2\\\\x^2 +x^2 +12x+36=2304\\\\2x^2 +12x-2268=0\\\\x^2 +6x-1134=0\\\\x=\frac{-6 \pm \sqrt{6^2 -4(1)(-1134)}}{2(1)}\\\\x \approx 30.8 \text{ } (x > 0)\\\\\implies x+(x+6) \approx 67.6\\\\\therefore (x+(x+6))-48 \approx 19.6\)

The rate of calories burned by bike riding is 4 calories per minute

First we have to choose points from the graph

The coordinates of the first point = (10, 40)

The coordinates of the second point = (20, 80)

The slope of the line is the change in y coordinates with respect to the change in x coordinates of the line

The slope of the line m = \(\frac{y_2-y_1}{x_2-x_1}\)

Where m is the slope of the line

\((x_1,y_1)\) is the coordinates of the first point

\((x_2,y_2)\) is the coordinates of the second point

Substitute the values in the equation

The slope of the line = (80-40) / (20-10)

= 40/10

= 4 calories per minute

Hence, the rate of calories burned by bike riding is 4 calories per minute

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Answer:

14/-15

Step-by-step explanation:

(y2 - y1) / (x2 - x1) = slope

= (-6 - (-20)) / (-17 - (-2))

= 14 / -15

Slope = 14/-15

The expression becomes:x - 5x + 1/10= -4x + 1/10

Therefore, the simplified expression is -4x + 1/10.

Given expression: `-1/2x - 1/5 - 5x 3/10 3/2x`

To simplify the given expression, we need to combine the like terms.

Combining the like terms means adding or subtracting the same type of term.

For example, we can combine `3x` and `2x` because they are both `x` terms.

But we can't combine `3x` and `4y` because they are different types of terms.

To simplify the given expression, we can combine `-1/2x` and `3/2x` because they are both `x` terms.

Therefore,-1/2x + 3/2x = 2/2x= x

Now, the given expression becomes:x - 1/5 - 5x 3/10

Now, we can combine `-1/5` and `3/10` because they are both fraction terms.

Therefore,-1/5 + 3/10 = -2/10 + 3/10 = 1/10

Now, the expression becomes:x - 5x + 1/10= -4x + 1/10

Therefore, the simplified expression is -4x + 1/10.

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Answer:

\(9x + 4 - 3y^2\)

Step-by-step explanation:

Given

\(5x+4x - 1+3 - 7y^2 +2+4y^2\)

Required

Simplify

\(5x+4x - 1+3 - 7y^2 +2+4y^2\)

Collect Like Terms

\(5x+4x - 1+3 +2+4y^2- 7y^2\)

Simplify like terms

\(9x + 4 - 3y^2\)

Hence,

\(5x+4x - 1+3 - 7y^2 +2+4y^2\) \(= 9x + 4 - 3y^2\)

Using the concept of linear equation in two variables we can find the number of years that the lava flows and the island has expanded by 60 centimeters.

If an equation is written in the format ax + by + c=0, where a, b, and c are real integers, a and being the coefficients of x and y,  respectively, are also not equal to zero, then it is said to be a linear equation in two variables.

The given equation can be written as  x=8y+2

where

'x' represents the length of expansion

'y' represents the number of years lava flows

From the above equation (i.e) x=8y+2

we can write

8y=x-2

y=\(\frac{x-2}{8}\)

Now substituting value of x=60 centimeters we get

\(y=\frac{60-2}{8}\)

\(y=\frac{58}{8}\)

y=7.25

The number of years that the lava flows and the island has expanded 60 centimeters is 7.25 years.

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Answer:

0.75 or 3/4 boxes of nails per bird house

Answer: To match the shapes produced by the slice through the triangular prism, we need to consider the orientation of the slice relative to the prism. Here are the matching options:

A. Perpendicular to the base: Rectangle

B. Parallel to the base: Triangle with dimensions equal to the base

C. Diagonal from vertex to vertex: Triangle with unknown dimensions

Answer:

124.6

Explanation:

Let the number be x.

Thus, we have that: 13% of x =16.2

Next, solve for x by cross-multiplying.

Divide both sides by 13.

Thus, 16.2 is 13% of 124.6 (rounded to the nearest tenth).

Answer:

-3/2

Step-by-step explanation:

slope= rise/run = -60/40 = -6/4 = -3/2

Answer:

There is no no pic of a square

Step-by-step explanation:

The probability that a woman is having one child of each sex is 0.2548.

The probability of having two children of the same gender (either both girls or both boys) can be calculated by multiplying the probability of having a girl or a boy is (which is 1/2 or 0.5) by itself twice, as each child is independent of the other:

0.5 × 0.5 = 0.25 (probability of having either two girls or two boys)

Since the total probability of having two girls or two boys is 0.5048 as given in the question, the probability of having one child of each sex is: 0.5048 - 0.25 = 0.2548.

Therefore, the probability that a woman with two children has one child of each sex is 0.2548

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We may prefer one model over the other for predicting the number of complaints based on the given predictor.

To plot the rate of complaints in relation to the potential predictors, we can use scatterplots. The four potential predictors are: hours worked per week, years of experience, number of visits made, and the number of procedures carried out. We can plot the rate of complaints (complaints per visit) against each of these predictors and observe the relationships.

To fit a binomial GLM for the number of complaints out of the number of visits, we can use the glm() function in R. We will set the family argument to "binomial" since the response variable is binary. We can then check the goodness of fit of the model using diagnostic plots such as the residuals vs. fitted values plot and the Q-Q plot of the residuals.

To check the significance of the predictors in the binomial model, we can use the summary() function to obtain the p-values for each predictor.

A significant predictor would have a p-value less than the significance level (usually 0.05). We can also interpret the effect of significant predictors by looking at the estimated coefficients in the model output.

To fit a Poisson rate model for the number of complaints, we can use the glm() function again, but this time with the family argument set to "poisson". We can then check the goodness of fit of the model using the same diagnostic plots as before.

To check the significance of predictors in the Poisson model, we can use the summary function again to obtain the p-values. We can interpret the effect of significant predictors in a similar way as before. We can compare the conclusions of the binomial and Poisson models by comparing the estimated coefficients and their significance.

To exchange the role of hours and visits in the Poisson rate model, we can simply switch the order of the predictor variables in the model formula. We can then check the significance of the predictors and interpret the outcome as before.

We can compare the two proposed rate models by comparing their goodness of fit and the significance of their predictors. We can also compare the estimated coefficients and their interpretations. Depending on the results, we may prefer one model over the other for predicting the number of complaints based on the given predictors.

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The line of symmetry of the quadratic equation is x = -1

Here we want to find the line of symmetry of the quadratic equation:

f(x) = (x -4)*(x + 6)

The line of symmetry for any quadratic equation with a vertex (h, k) is:

x = h

So we need to find the vertex of our equation.

We can see that we have a zero at x =-6 and other at x = 4

Then the vertex is at:

h = (-6 + 4)/2

h = -2/2

h = -1

And thus, the line of symmetry is x = -1

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Answer:

The answer would be 17 cm

Step-by-step explanation:

If the distance between their feet is 12 cm, then the distance between their heads would also be 17 cm, because of their five cm height difference. [ You add that on to their normal distance]. I hope this helped! If I'm wrong, I'm sorry and please let me know... Have a great day!!

Answer:

the answer is d using the distance formula

Answer:

a = 80

b = 40

c = 58

d = 19

e = 34

f = 36

Pls mark brainliest. Thanks!

Answer:

a = 80

b=40

c=58

d=19

e=34

f=36

Step-by-step explanation:

The statement; Approximately 120 families turned on their televisions for less than 37 hours is true.

From the task content, since the 10% percentile of the data corresponds to 24 families, it.follws that the total number of families sampled is; 24 × 10 = 240 families.

On this note, after the first 120 data points, the median is determined to be 33.2 hours which is less than the mean. Conclusively, it follows that approximately 120 families turned on their televisions for less than 37 hours.

Hence, the statement is true.

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Answer:

Step-by-step explanation:

2^4*m^4*n^(4*4)

16 m^4 n^16