Please help would mean a lot

D). There is at least one row of the coefficient matrix that does not have a pivot position. is the correct option. Since there is at least one row of the coefficient matrix that does not have a pivot position, the system is consistent.

This means the augmented matrix, which will have the form 0 000 0 o 0 0so the system is consistent. nine columns, could have a row of the form 0 0 o o o 0 0 0 1so the system could be inconsistent.What is a consistent system?A consistent system of equations has at least one solution. This means that the system is solvable, and there is a unique solution, no solution, or infinitely many solutions.

However, for a system of linear equations to be consistent, the rank of the coefficient matrix should be equal to the rank of the augmented matrix.What is a pivot position?A pivot position is a position in the coefficient matrix in a system of equations that contains the leading coefficient (the first non-zero entry in a row). These pivot positions indicate that a row has a leading coefficient, which means that the row is a pivot row and is used to solve a system of equations.

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The exercise involves finding the product C = AB, where matrix A is given by [2 9] and matrix B is given by [3 6 1]. We need to perform the matrix multiplication to obtain the resulting matrix C.

Let's calculate the matrix product C = AB step by step:

Matrix A has dimensions 2x1, and matrix B has dimensions 1x3. To perform the multiplication, the number of columns in A must match the number of rows in B.

In this case, both matrices satisfy this condition, so the product C = AB is defined.

Calculating AB:

AB = [23 + 912 26 + 94 21 + 95]

[103 + 612 106 + 64 101 + 65]

Simplifying the calculations:

AB = [6 + 108 12 + 36 2 + 45]

[30 + 72 60 + 24 10 + 30]

AB = [114 48 47]

[102 84 40]

Therefore, the product C = AB is:

C = [114 48 47]

[102 84 40]

In summary, the matrix product C = AB, where A = [2 9] and B = [3 6 1], is given by:

C = [114 48 47]

[102 84 40]

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Given a 27-bit subnet mask, we have 5 bits left to borrow for subnetting. Therefore, the number of subnets that can be created = 2^5 = 32 subnets. With 27 bits, the number of IP addresses available for each subnet = 2^5 - 2 = 30 IP addresses.

This is because 2 IP addresses are reserved for network address and broadcast address respectively. Therefore, the total number of IP addresses available with the given 27-bit subnet mask = 32 x 30 = 960 IP addresses.The subnet address for the given subnet mask can be calculated by ANDing the subnet mask with the IP address.

Let’s assume the IP address is 192.168.1.23/27 (where /27 is the 27-bit subnet mask).

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Answer:

the second one i believe:)

Step-by-step explanation:

i literally just did this in algebra lol...hope this helps:))

Answer:

A

Step-by-step explanation:

The triangles JKL and XYZ are similar by the SSS similarity statement

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

The triangles in this figure are

JKL and XYZ

These triangles are similar because:

"If three sides in one triangle are proportional to three sides in another triangle, then the two triangles are similar"

This means that they are similar by the SSS similarity statement

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Answer:

y = 3x + 9

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x + 7 ← is in slope- intercept form

with slope m = 3

• Parallel lines have equal slopes , then

y = 3x + c ← is the partial equation

to find c substitute (- 6, - 9 ) into the partial equation

- 9 = - 18 + c ⇒ c = - 9 + 18 = 9

y = 3x + 9 ← equation of parallel line

Answer:

a

Step-by-step explanation:

I go it right on my test

;)

Answer:x=57

Step-by-step explanation:

Answer:

Account Balance = Principal x (1 + interest rate (decimal)) number of years, compounded annually.

Step-by-step explanation:

This is based on the information provided: 2121.80 (1.03)2 = 2000 So, on your initial deposit of 2000, you can collect 121.80 in interest after two years.

Answer:

378

Step-by-step explanation:

length- 12

width - 6

height= 17

2( lw+ hL+ wh)

substitue values.

And you Get 378

have a good Day!!!!

Answer:

V≈904.78cm³

Step-by-step explanation:

The required solution to the given statement is 14/15.

The least common multiple is defined as the least positive integer that is dividable by both given numbers.

A group's Least Common Multiple (LCM) is the smallest number that is a multiple of all the numbers. For example, the LCM of 4 and 5 is 20; 20 is the smallest number that is both a multiple of 4 and a multiple of 5

The statement is given in the question below as:

-2/5 plus 4/3

Here "plus" represents the addition sign (+)

So, the algebraic form of the above statement will be as:

⇒ -2/5 + 4/3

Take the LCM between the fractions, we get

⇒ ( -6 + 20)/15

⇒ 14/15

This means 14/15 is obtained from -2/5 plus 4/3.

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\(w^8\) is the expression using positive exponents.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

w³ x \(w^5\)

= \(w^{3 + 5}\)

= \(w^8\)

Thus,

\(w^8\) is the final expression.

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The answer to Math.round(3.6) is D. 4.0. The Math.round() method is used to round a number to the nearest integer.

When we apply Math.round(3.6), it rounds off 3.6 to the nearest integer which is 4.

This method uses the following rules to round the given number:

1. If the fractional part of the number is less than 0.5, the number is rounded down to the nearest integer.

2. If the fractional part of the number is greater than or equal to 0.5, the number is rounded up to the nearest integer.

In the given question, the number 3.6 has a fractional part of 0.6 which is greater than or equal to 0.5, so it is rounded up to the nearest integer which is 4. Therefore, the correct answer to Math.round(3.6) is D. 4.0.

It is important to note that the Math.round() method only rounds off to the nearest integer and not to a specific number of decimal places.

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Answer:

180

Step-by-step explanation:

Here's a photo of the solution here

A mathematical expression is neither true nor false; it is evaluated rather than being assigned a truth value.

A mathematical expression, by itself, is not considered true or false because it does not make a specific claim or statement. An expression is a combination of numbers, variables, and mathematical operations, such as addition, subtraction, multiplication, and division. It represents a computation or evaluation, but it does not assert any truth value.

For example, the expression "2 + 3" is simply a calculation that evaluates to the value 5. It does not make a claim or statement that can be determined as true or false. Similarly, expressions like "\(x^2 + 4\)" or "sin(θ) + cos(θ)" represent mathematical computations but do not have a truth value.

To determine the truth value of a mathematical statement, you need an equation or inequality that makes a specific claim or relationship between mathematical expressions. For instance, the equation "2 + 3 = 5" is a mathematical statement that can be determined as true, while the inequality "x > 5" depends on the value of x and can be evaluated as true or false.

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Answer:

-9/4 or -2.25

Step-by-step explanation:

−2(x+1/4)+1=5 ​ ​

-2x - 0.5 + 1 = 5

-2x + 0.5 = 5

-2x = 4.5

x = -2.25

Fraction form: -9/4

Answer: v =  3 /7 y +  4 /7

Step-by-step explanation:

Step 1: Add -3 to both sides.

−7v+3+−3=−3y−1+−3

−7v=−3y−4

Step 2: Divide both sides by -7.

−7v /−7  =  −3y−4 /-7

v= 3 /7 y +  4 /7

The expression that represents the total cost after the return is 4b + 3r.

To reduce a fraction to its lowest terms by canceling to the lowest common factor for both numerator and denominator or to simplify an algebraic expression by grouping and combining similar terms is called Simplification.

Given that 6b + 4r represents the total cost of the rice and beans Gabriel bought.

He returns 2 bags of beans and 1 bag of rice, the expression that represents the total cost after the return is (6b + 4r) – (2b + r).

The simplification of the expression of the total cost is given below.

\(6b + 4r - (2b + r)\)

\(6b + 4r - 2b -r\)

Regrouping the common terms,

\(6b-2b + 4r -r\)

\(4b + 3r\)

Therefore, the expression that represents the total cost after the return is 4b + 3r.

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Answer: B

Step-by-step explanation: reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

The engineer's improved light bulb likely has a statistically significant longer lifetime than the previous design, with a small but measurable difference of 0.2 hours.

Statistical significance refers to the probability that the observed difference between two groups (in this case, the old light bulbs and the new ones) is not due to chance alone. If the probability is low enough, we can confidently reject the null hypothesis (that there is no difference between the two groups) and conclude that there is a real difference between them.

In this case, a sample size of 40,000 bulbs is quite large, which increases the statistical power of the test and allows for even small differences to be detected as significant. The fact that the new bulb had a slightly longer lifetime of 1,200.2 hours, compared to the old bulb's average lifetime of 1,200 hours, suggests that the engineer's design improvement was successful in making the bulb last longer.

However, it's important to note that while the effect is statistically significant, the practical significance may be less clear. A difference of 0.2 hours may not make a noticeable impact on the bulb's usefulness or longevity in real-world scenarios. Additionally, other factors such as cost or energy efficiency may also need to be considered when evaluating the success of the new design.

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Answer:

the square or the triangle

Step-by-step explanation:

Answer: 37.69911184

Step-by-step explanation: π(4)(3) = 12π = 37.69911184

Answer: a11 + ( b11 + c11 ) = 0

Step-by-step explanation:

A, B, and C represent three matrices of the same size and (A + B) + C = 0.

Answer:

52 yards across

Step-by-step explanation:

Hakim drew a scale drawing of a neighborhood park. he used the scale 5 inches : 2 yards. a soccer field in the park is 130 inches wide in the drawing. how wide is the actual field?

130/5 = 26

26*2 = 52 yards across

Answer:

The value of x is 70°

Step-by-step explanation:

(2x – 5)° + 45° = 180°

2x – 5° + 45° = 180°

2x + 40° = 180°

2x + 40° – 40° = 180° – 40°

2x = 140°

2x/2 = 140°/2

x = 70°

Thus, The value of x is 70°

-TheUnknownScientist 72

Answer: To find the percentage of people with an IQ score less than 117, we need to calculate the z-score first. The z-score measures how many standard deviations an individual score is from the mean in a normal distribution.

The z-score formula is given by:

z = (x - μ) / σ

Where:

Let's calculate the z-score:

Now, we need to find the percentage of people with a z-score less than 1.1333. We can look up this value in the standard normal distribution table (also known as the Z-table) or use statistical software/tools.

Using the Z-table, we find that the percentage of people with a z-score less than 1.1333 is approximately 0.8708, or 87.08% (rounded to the nearest hundredth).

Therefore, approximately 87.1% of people have an IQ score less than 117.

When dealing with the simultaneous occurrence of two events A and B, the probability can be determined by using the probability of one event and the conditional probability of the other event given that the first event has occurred. Both P(A) * P(B|A) and P(B) * P(A|B) are valid ways to calculate this probability.

The concept of probability is fundamental in various fields such as mathematics, statistics, and even in everyday life. The probability of the simultaneous occurrence of two events A and B is a critical concept in probability theory. According to the definition, the probability of A and B occurring at the same time is equal to the probability of A multiplied by the conditional probability of B given that A has occurred. This equation is also valid in the reverse case, where the probability of B and A occurring simultaneously is equal to the probability of B multiplied by the conditional probability of A given that B has occurred.

Understanding the relationship between the probability of two events and their conditional probabilities is essential in predicting the likelihood of these events happening together. In real-life situations, this concept can be used to determine the probability of two events such as the success of a product launch and the corresponding increase in sales. The probability of these two events occurring simultaneously can be predicted by analyzing the probability of the product launch's success and the conditional probability of sales increasing given that the product launch is successful.

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Answer:

Your brothers and his friends paid less for the tickets compared to you and your friends. They went Friday night.

Step-by-step explanation:

48/3 = How much per ticket you paid / $16

36/2 = 18 / How much your friend paid for each ticket.

Tbh this question is very confusing, so I won't guarantee an exact correct answer for you. I think there should be more details added

Answer:

3/20

Step-by-step explanation:

Take the miles that Maria walked and subtract the miles that Cody walked

3/4 - 6/10

Simplify 6/10 by dividing the top and bottom by2

3/4 - 3/5

Get a common denominator of 20

3/4 *5/5 = 15/20

3/5 *4/4 =12/20

15/20 - 12/20

3/20

Answer:

0.15(3/20) miles more than Cody

3/4 = 0.75

6/10 = 0.6

Therefore, Maria walked 0.15(3/20) miles greater than Cody.