O(-
Determine if (-2, -1) is a Solution or
Not a Solution to the linear system.
y = 3x + 5
x + y = -3
Please answer!!!

Answer: 8 > u > 6. I hope it helps!

Answer:

B.) The interquartile range of the data is 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

a. 18² and 19² and 6³

b. 26² and 27² and 9³

c. 29² and 30²

d. 35² and 36² and 11³

Answer: D or the Fourth Choice-The quotient of 14 and 8 tenths divided by 2 plus the product of 6 and 3 minus 12

PEDMAS means Parentheses, Exponents, Divide, Multiply,Add,Subtract. The first thing we must solve is what is in the parentheses, that is 14.8 divided by 2. We don't have any exponents, so we move to divide. We have already solved the division sentence that was in the parentheses, so we have to multiply 6x3 next. 6x3 will then be added to the answer that was divided by 14.2 and 2, and lastly we will subtract 12. The only answer choice that follows that pattern is D or The quotient of 14 and 8 tenths divided by 2 plus the product of 6 and 3 minus 12.

I hope this helped & Good Luck <3!!!!

The number of constraints required at each cut-point for a cubic spline is two, and the total degrees-of-freedom for the curve can be calculated using the formula:

degrees-of-freedom = (number of cubic polynomials) x 4 - (number of cut-points) x 2

When fitting a piecewise polynomial for a regression, the number of constraints required at each cut-point to obtain a cubic spline is two. These two constraints are known as continuity constraints. The first continuity constraint is that the two adjacent cubic polynomials must have the same function value at the cut-point. The second continuity constraint is that the two adjacent cubic polynomials must have the same derivative value at the cut-point. These constraints ensure that the cubic spline is smooth and continuous at each cut-point.
The total degrees-of-freedom for the curve can be calculated by subtracting the total number of constraints from the total number of parameters in the model. For a cubic spline, there are four parameters for each cubic polynomial and two constraints at each cut-point. Therefore, the total degrees-of-freedom for the curve can be calculated using the formula:
degrees-of-freedom = (number of cubic polynomials) x 4 - (number of cut-points) x 2
It is important to note that the number of cut-points is equal to the number of pieces minus one, where a piece refers to a continuous interval in the data that is fitted with a single cubic polynomial.

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The age of Elsie at the moment is six years.

We can be able to make use of the mathematical equation when we are trying to obtain a particular variable. When we obtain the variables and plug them into the equation than the value that we are looking for can emerge.

Let Elsie's age be x;

Five years ago = x - 5

Eight years time x + 8

We have in the question that;

x - 5 = 1/2( x + 8)

2x - 10 =  x + 8

2x + x = 8 + 10

3x = 18

x = 6 years

The age that Elsie is at the present can be obtained as six years.

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Answer:

ok

Step-by-step explanation:

ok

Answer:

  c:  8,20,25

Step-by-step explanation:

You want to know which set of side lengths can form a triangle from the sets ...

A set of lengths can form a triangle if and only if the sum of the shorter two exceeds the longest.

In sets a, b, d, the sum of the shorter two is equal to the longest. These lengths will form a line segment, not a triangle.

A triangle can be formed by ...

  c: 8,20,25 . . . . . . 8+20=28 > 25

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Students taking both honors courses and prefer basketball to football is 450.

Total number of students at a high school = 6000

Number of students who has taken honors courses = 1500

Number of students who prefer watching basketball to football = 1800

Let event of taking honors courses be A

and event of preferring watching basketball be B

P(A) = 1500 / 6000 = 0.25

P(B) = 1800 / 6000 = 0.3

If both the event of taking honors courses and preferring watching basketball is independent then

By using property of independent events ,

P(A∩B) = P(A) . P(B)

= (0.25)(0.3) = 0.075

Number of students taking both honors courses and prefer basketball to football = 0.075 × 6000

= 450 Students

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A sample size of 1068 is needed with a 95% confidence level and a 3% margin of error to estimate the proportion of people who support a political candidate.

To determine the sample size needed to estimate the percentage of people who support the political candidate with a 3% margin of error at a 95% confidence level, we can use the formula:

n = (z^2 * p * (1 - p)) / (E^2)

where n is the sample size, z is the z-value corresponding to the desired confidence level (95% confidence level corresponds to z = 1.96), p is the estimated proportion of the population that supports the candidate (we can use 0.5 as a conservative estimate), E is the desired margin of error (3% or 0.03)

Substituting the values into the formula, we get:

n = (1.96^2 * 0.5 * (1 - 0.5)) / (0.03^2) = 1067.11

Rounding up to the nearest integer, we need a sample size of 1068 to estimate the percentage of people who support the political candidate with a 3% margin of error at a 95% confidence level.

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Answer:

about 5 rows

Step-by-step explanation:

14 divided by 3= 4.7 but since you can’t have 4.7 rows I rounded it to 5 rows. You can’t have 4 rows because then there would be 2 seeds remainin.

Answer:

Brittany can plant 4 rows and she will have 2 seeds left

Step-by-step explanation:

Fourteen divided by 3 will give you a mixed fraction.

So you can do 3*4= 12

If you do 14-12 you will get 2 seeds that remain.

Answer:

97, that's the answer.

Answer: 97.1

Step-by-step explanation: the tenth is the first number after the decimal place so in your question that number is the 0 and the number next to it is 8 so, our 0 needs to change because 8 is bigger than 5 on the number line which makes our 0 increase to 1. You don't need to change the whole number at all.

Step-by-step explanation:

17) 3x+5-12+4x+2x

3x+4x+2x +5-12

8x-7

if x =6

8*6-7 =48-7

= 41

18.) 9(3x-4y+8)

27x-36y+72

In order to calculate the t statistic, you first need to calculate the pooled variance under the assumption that the null hypothesis is true.

In order to calculate the t statistic, you first need to calculate the pooled variance under the assumption that the null hypothesis is true. The standard error is a measure of the variability of the sample means around the true population mean. It takes into account the sample size and the variability of the data. Once you have calculated the standard error, you can then use it to calculate the t statistic, which is a measure of how far the sample mean deviates from the null hypothesis mean, relative to the standard error. The pooled variance is used when you are comparing two independent samples, but it is not necessary for calculating the t statistic in a single sample scenario where the null hypothesis is true.

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Answer:

-2x^2 -4x-4

Step-by-step explanation:

Answer:

This is very similar to what we are proving if you just change the angles.

Answer:

9/13

Step-by-step explanation:

Total = 9 + 4

= 13

Probability: 9/13

If two random variables, Y1 and Y2, are independent, the condition that needs to be satisfied is that the joint probability distribution of Y1 and Y2 factors into the product of their individual probability distributions.

Mathematically, for independent random variables Y1 and Y2, the condition can be expressed as:

P(Y1 = y1, Y2 = y2) = P(Y1 = y1) * P(Y2 = y2)

This means that the probability of both events Y1 = y1 and Y2 = y2 occurring together is equal to the product of the probabilities of each event occurring individually.

In simpler terms, knowing the outcome or value of one random variable does not provide any information about the outcome or value of the other random variable if they are independent. They do not influence each other's probability distributions.

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Answer: A

Step-by-step explanation:

The given values are every 90min, 1/2 in rain falls.

You want to find out how much rain there is in 24 hours.

In order to do this, you need to find out how many 90min sections there are in 24hrs.

1. Convert 24hrs to minutes

24hrs * 60min = 1440min

2. Find out how many 90min sections there are in 1440 minutes

1440min / 90min = 16 times

That means 1/2in of rain happens 16 times

Greetings from Brasil...

We can solve this question through the rule of 3....

Remember that:

90min = 1.5h = (3/2)h

Then

time (h)                       inch of rain

  3/2      ---------------          1/2

  24        ---------------          X

(3/2)·X = 24·(1/2)

X = 24·(1/2)·(2/3)

If two events, event A with probability P(A) and event b with probability P(B) are complementary events then the sum of the probability of events A and B will be one.

Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.

When one event happens if and only if the other one doesn't, two occurrences are said to be complimentary. The odds of two complementary events equal one.

P(A) + P'(A) = 1

The chance of events A and B added together will equal one if events A with probability P(A) and event B with probability P(B) are complementary occurrences.

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Answer:

Step-by-step explanation:

im not 100% sure but probly 135

Answer:

angle c and b are 137 degrees both

Step-by-step explanation:

given angle is 43° and when subtracted from 180°

we have 137°.

using the alternative angle property the angle b is also 137°.

Answer:

4(x+3)

Step-by-step explanation:

\(\frac{8(x+3)^{2} }{2(x+3)} =4(x+3)^{2-1} =4(x+3)\)

I hope this help you

Hey there!

2 + (-8)

= 2 - 8

= -6

Therefore, your answer is: -6

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

GUIDE

• 2 negatives = positive

• 2 positives = positive

• 1 negative & 1 positive = negative

• 1 positive & 1 negative = negative

The standard deviation is 8.

Data dispersion in regard to the mean is quantified by a standard deviation, or. Data are said to be more closely grouped around the mean when the standard deviation is low and more dispersed when the standard deviation is high. A measure of a group of values' variance or dispersion in statistics is called the standard deviation. The values tend to be close to the set's mean when the standard deviation is low, while the values are dispersed over a larger range when the standard deviation is high. The dispersion of the data around the mean value is measured by the standard deviation. It might be helpful when comparing data sets that may have the same mean but a different range.

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A: the average amount of cashews per bag to determine average cost

C: the amount of variation in ounces of cashews in the bags of trail mix

D: which factory produces the most consistent ounces of cashews in each bags of trail mix

The average amount of cashews per bag is important to determine the average cost of the trail mix. The production manager can use this information to ensure that the company is making a profit.

The amount of variation in ounces of cashews in the bags of trail mix is also important. The production manager can use this information to ensure that the bags of trail mix are consistent.

Finally, the production manager can use the information about which factory produces the most consistent ounces of cashews in each bag of trail mix to make decisions about which factory to use.

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Great Granola makes a trail mix consisting of peanuts, cashews, raisins, and dried cranberries. The trail mix sells for $3.50, and the most expensive ingredient is the cashew. The production manager takes a random sample of 15 bags of trail mix from two factories to determine the amount of cashews in each bag. What statistical information could be useful to the production manager?

A: the average amount of cashews per bag to determine average cost

C: the amount of variation in ounces of cashews in the bags of trail mix

D: which factory produces the most consistent ounces of cashews in each bags of trail mix

Answer: 15 - 6i

Step-by-step explanation:

3(5-2i)

3×5+3×(−2i)

Do the multiplications.

15−6i

Question:

What is the effect of the following variables on the strength of an electromagnet?

Answer: .By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. There is another way that uses electricity to make a temporary magnet, called an electromagnet.

Answer:

Increse Increse

Step-by-step explanation:

I would say based on the chart that the anwser is:

Increse the numbers of coals around the nail, increse the strength of the electromagnet

Because on both side the numbers are growing.