Select the ordered pairs that are solutions to the system of inequalities y≤-2x+6;x−y<6 Select all that apply. a.(0,0) b.(-5,-15) c.(4,-2) d.(3,0) e.(10,0)

Answer:

Divide  172.75 by 348.79

Step-by-step explanation:

Answer:

58.68

Step-by-step explanation:

348.79- 172.75=176.04

176.04/3= 58.68

Answer:

D

Step-by-step explanation:

Firat, anything going up to the right is a positive over a positive, so right away you know it is either A or D.

Second, slope is rise over run. You see the line goes through (0,0) and also (2,3) so the rise (change in Y values) is 3 and the run (change in X values) is 2. so it is 3/2r.

To find the slope mathematically, you would do it like this:

y1 - y2

---------

x1 - x2

so you would have a slope of

3-0

-----

2-0

which would give you 3/2.

this method works best when the line doesn't go neatly though easy points like the origin.

Answer:

The coordinates of Q are (1.5,3)

Step-by-step explanation:

Here, we simply want to divide the line segment in the given ratio

We can use the internal division formula here;

The coordinates of Q will be;

(x,y) = (nx1 + mx2)/(n + m) , (ny1 + my2)/(n + m)

m = 5, n = 3

(x,y) = (3(-1) + 5(3))/(5 + 3) , (3(-2) + 5(6)/(5 + 3))

(x,y) = (-3 + 15)/8 , (-6 + 30)/8

(x,y) = 12/8, 24/8

(x,y) = (1.5,3)

Answer:

Step-by-step explanation:

1. EG=tangent line

2.EN=radius

3. ER=chord

4. IR=diameter

5.IW=secant line

6. Point E=point of tangency

7.IEW=Major arc

8. IE=minor arc

9.IER=semi-circle

10. Point N=center of a circle.

The statements that are True about the Correlations is , "Correlations are a measure used to determine the degree to which two variables are related" , the correct option is (c) .

In the question,

few statements about Correlation is given ,

we need to find the statement that is True .

we know that , Correlation is the term that is used to measure the degree of relationship between two variable ,

the correlation can be negative , positive or 0 ,

and the negative correlation implies that if one variable increases then other variable decreases and vice a versa .

So , from the above information about Correlation ,

we conclude that , the True statement is "Correlations are a measure used to determine the degree to which two variables are related. "

Therefore , the statement in option (c) is True  .

The given question is incomplete , the complete question is

Select the statement below that is true about correlations.

(a) Correlations can only be negative

(b) Correlations are a measure of how much one variable changes as the other variable changes

(c) Correlations are a measure used to determine the degree to which two variables are related.

(d) Correlations are a measure of causation between two variables

(e) A negative correlation implies no relationship between variables

(f) Correlations can only be positive .

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Answer:

Response

The variable we are trying to predict.

Synonyms

dependent variable, Y-variable, target, outcome

Independent variable

The variable used to predict the response.

Synonyms

X-variable, feature, attribute

Record

The vector of predictor and outcome values for a specific individual or case.

Synonyms

row, case, instance, example

Intercept

The intercept of the regression line—that is, the predicted value when

�

=

0

.

Synonyms

�

0

,

�

0

Regression coefficient

The slope of the regression line.

Synonyms

slope,

�

1

,

�

1

, parameter estimates, weights

Fitted values

The estimates

�

^

�

obtained from the regression line.

Synonyms

predicted values

Residuals

The difference between the observed values and the fitted values.

Synonyms

errors

Least squares

The method of fitting a regression by minimizing the sum of squared residuals.

Synonyms

ordinary least squares

TRUE

Step-by-step explanation:

Answer:

Given distance=360 km.

Let the speed of the train be x km/hr.

Speed when increased by 5 km/hr =(x+5) km/hr

x

360

−

(x+5)

360

=1

x(x+5)

[360x+1800−360x]

=1

x

2

+5x−1800=0

x

2

+45x−40x−1800=0

x(x+45)−40(x+45)=0

(x−40)(x+45)=0

x=40,−45

The speed of the train is 40 km/hr.

Step-by-step explanation:

thanks... ☺️

Answer:

Step-by-step explanation:I don't day you must have to mark my ans as brainliest but if it has really helped u plz don't forget to thank me...

Answer:

4 days

Step-by-step explanation:

c ccccccccccccccccccccccccccccc

Answer:

13 feet

Step-by-step explanation:

Answer:

Step-by-step explanation:

Area of one face = 676 / 6

= 112.67

So the slide length = sqrt 112.67 = 10.6 feet.

Answer:

C) 2297.5

Step-by-step explanation:

8.5 times 160 is 1360

1/32 of 30,000 is 937.5

1360 + 937.5 is 2297.5

The area of the trapezium will be = 90\(mm^{2}\)

According to the figure of the trapezium =

Let us consider the length of base a = 5mm

length of base b = 13mm

height h of the trapezium = 10mm

According to the formula of the area of trapezium

= (1/2) x h x (a + b)

= (1/2) x 10 x (13 + 5)

= 5 x 18

= 90\(mm^{2}\)

Therefore, the area of the trapezium will be = 90\(mm^{2}\)

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The complete question here could be- Find the area of the trapezium given base a= 5mm, base b= 13mm and height h= 10mm

Answer:

10m^2 + 73m - 56

Step-by-step explanation:

First you want to distribute it, 10m(m + 8) - 7 (m + 8)

And again: 10m^2 + 80m - 7 (m + 8)

And one last time: 10m^2 + 80m - 7m - 56

Then you want to combine the like terms: 10m^2 + 73m - 56

Answer:

Peter receives £27 and Fred receives £45.

Answer:

11 inches is your answer sorry if i am wrong i hope this helps

Step-by-step explanation:

The coordinate of P represents the weighted average of the set of points such that point A has a weight of 2, and point D has a weight of 3 is 3.

A weighted average is a type of average where each number is assigned a weight. In this case, point A has a weight of 2 and point D has a weight of 3. This means that point A contributes twice as much to the weighted average as point D.

To find the weighted average, we can add up the weights of each point and then divide by the sum of the weights. In this case, we have:

```

Weighted average = (2 * A + 3 * D) / (2 + 3) = (2 * 1 + 3 * 5) / (2 + 3) = 11 / 5 = 2.2

```

The coordinate of P that represents a number 2.2 on the number line is 3.

Here is a diagram of the number line, with the points A and D marked, and the weighted average point P shown:

```

[asy]

draw((0,-1)--(10,-1));

draw((-1,0)--(-1,10));

draw((1,0)--(1,2.2));

draw((5,0)--(5,5));

label("A", (1,0), SW);

label("D", (5,0), SW);

label("P", (1,2.2), SE);

[/asy]

```

As you can see, point P is halfway between points A and D, and its coordinate is 3.

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The Z score that is equivalent to the raw score 92.5 is B. -1.25.

A Z score represents the number of standard deviations a raw score is from the mean in a normal distribution. To calculate the Z score, we use the formula: Z = (X - μ) / σ, where X is the raw score, μ is the mean, and σ is the standard deviation.

Given that the mean score is 100 and the standard deviation is 15, we can calculate the Z score for the raw score 92.5 as follows:

Z = (92.5 - 100) / 15

Z = -7.5 / 15

Z = -0.5

Therefore, the Z score that is equivalent to the raw score 92.5 is -0.5.

The Z score is a useful measure in statistics that allows us to standardize and compare data points across different distributions. It helps us understand the relative position of a data point within a distribution and determine how unusual or typical that data point is compared to others. By calculating the Z score, we can easily determine the percentage of data points that fall below or above a particular value in a normal distribution, which aids in making statistical inferences and drawing conclusions.

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Answer:

1/20

Step-by-step explanation:

Answer:

7/30

Step-by-step explanation:

After solving the fraction answer is 4 7/12 but the Susi's answer is 5 7/1. So the Susi's answer is wrong.

The given expression is 8 1/3- 3 3/4

We first solve that expression.

We convert mixed fraction into improper fraction.

After conversion we equal the denominator of of both fraction.

Then we subtract the fraction.

After solving we check Susi's answer is right or wrong.

To convert 8 1/3 into improper fraction we multiply 8 and 3 then we add 1 in the answer of multiplication of 8 and 3.

8 1/3 = 25/3

To convert 3 3/4 into improper fraction we multiply 3 and 4 then we add 3 in the answer of multiplication of 3 and 4.

3 3/4 = 15/4

Now the expression is:

= 25/3 - 15/4

Multiply and divide by 12 on both side

= 25/3 × 12/12 - 15/4 × 12/12

= (25 × 4)/12 - (15 × 3)/12

= 100/12 - 45/12

= (100 - 45)/12

= 55/12

= 4 7/12

The simplified answer of given expression is 4 7/12 but the Susi's answer is 5 7/1. So the Susi's answer is wrong.

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Answer:

Step-by-step explanation:

256 = 2 * 128 = 2 * 2 * 64 = 2 * 2 * 2 * 32

        = 2 * 2 * 2 * 2 * 16 = 2 * 2 * 2 * 2 * 2 *8

        =  2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 2⁸

Answer:

Step-by-step explanation:

The covariance between the sum (X+Y) and the difference (X-Y) of two identically distributed random variables X and Y is zero.

Let's calculate the covariance using the definition: Cov(X+Y, X-Y) = E[(X+Y)(X-Y)] - E[X+Y]E[X-Y]. Expanding the expression, we have Cov(X+Y, X-Y) = E[X² - XY + XY - Y²] - E[X]E[X] + E[X]E[Y] - E[Y]E[X] - E[Y]E[X] + E[Y²]. Simplifying further, we get Cov(X+Y, X-Y) = E[X²] - E[X²] + E[Y²] - E[Y²] - E[X]E[X] - E[Y]E[X] + E[X]E[Y] + E[Y]E[X] = 0. Here, we use the fact that X and Y are identically distributed, so their means and variances are equal (E[X] = E[Y] and Var[X] = Var[Y]). Thus, E[X]E[X] - E[Y]E[X] + E[X]E[Y] + E[Y]E[X] can be simplified to 2E[X]E[Y] - 2E[X]E[Y], which equals zero. Therefore, Cov(X+Y, X-Y) = 0, indicating that the sum and difference of identically distributed random variables X and Y are uncorrelated.

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Answer:

The angle measures \(\frac\pi2\) radians, or 90°

Step-by-step explanation:

In radians, the measure of an angle is defined as the length of the arc divide by the radius of the circle of which that arc is part of. In our case

\(\angle XOY = \frac {\overarc{XY}}{OX} = \frac{16\pi}{32} = \frac\pi2\)

Answer:

angle XOY = \(\frac{\pi}{2}\) (in radians) or 90° (in degrees)

Step-by-step explanation:

So firstly we need to consider that the unit of measurement is radians, not degrees, as represented by the 'measures 16π cm'.

Next, since we have the length of arc XY given as 16π cm, we can apply the formula for the length of an arc, in radians, which is \(l=r\theta\).

I'm assuming that you know how to derive the formula for arc length since you are getting questions about arc length like this, but if not, then you can just search on the internet: "derivation for the formula of arc length in radians"

Therefore: we should let ∠XOY = ∅ and so,

\(l=16\pi\) and \(r=32\)

\(16\pi =32\theta\\\frac{16\pi}{32}=\theta\\ \frac{\pi}{2}=\theta\)

∴∠XOY = \(\frac{\pi}{2}\\\) radians

(Unless otherwise stated, return your answer in the same unit of measurement as the measurements in the question)

Answer: Regular nonagon

Step-by-step explanation: In image

The results of the calculations are approximately 7.07 and 3.74, respectively, to the correct number of significant figures.

Performing the calculation:

(10.52)(0.6721) = 7.0671992

Rounding to the correct number of significant figures, we have:

(10.52)(0.6721) ≈ 7.07

Next, let's calculate (19.09 - 15.347):

(19.09 - 15.347) = 3.743

Rounding to the correct number of significant figures, we have:

(19.09 - 15.347) ≈ 3.74

Therefore, the results of the calculations are approximately 7.07 and 3.74, respectively, to the correct number of significant figures.

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Answer: 471.238898359 Or when rounded, 471.2

Step-by-step explanation: