The matrix that represents all digits in the base-ten positional numeral system, except zero, is a 9x9 matrix where each element represents a digit from 1 to 9.
The matrix that represents all digits in the base-ten positional numeral system, except zero, can be represented as follows:
[1 2 3 ... 9]
To check if this matrix has an inverse, we calculate its determinant. Since the matrix is a 9x9 matrix with elements from 1 to 9, the determinant can be calculated using standard methods such as expansion by minors or row reduction. However, since the matrix is a simple sequential arrangement of numbers, we can observe that the determinant of this matrix is zero. This is because the determinant of a matrix with identical rows or columns is always zero.
Since the determinant of the matrix representing the digits from 1 to 9 in the base-ten system is zero, we can conclude that the matrix does not have an inverse. Inverse of a matrix exists only if the determinant is non-zero. In this case, since the determinant is zero, the matrix does not have an inverse.
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What is equilvilent to `y=x^{2}+8x+18`
Answer: Subtract 16 16 from 18 18 . Substitute the values of a a , d d , and e e into the vertex form (x+4)2+2 ( x + 4 ) 2 + 2 .
Step-by-step explanation:
i ain't 100 percent sure
3.
Solve the formula for the area of a parallelogram the height, h.
A=b xh
h =
(use the / symbol to show division)
Answer:
The answer would be A/B=H
Step-by-step explanation:
To get rid of the B that is connected to the H, you would do the opposite of what they used. Meaning since the two were multiplied you would divide them. So, you would take your b and divide it on both sides of the equal sign. B and B cancels each other out so you are left with A/B which equals H.
Compute the expected value for X.
0 Y 1 2 1 0.10 0.05 0.02 2 0.12 0.10 0.16 3 0.06 0.11 0.28
The expected value for X is 1.56.
Expected value is the mean value that we would expect if we conducted the same experiment many times and recorded the result of each trial. This formula is used to calculate the expected value for X.
This formula is used to calculate the expected value for X:E(X) = Σ [ xi * P(xi) ] where xi represents the value of X, and P(xi) is the probability of X taking the value xi.
The value of xi is multiplied by its corresponding probability and then summed over all the values of X.
This gives the expected value of X. Now, let us use the formula to calculate the expected value of X:
E(X) = (0 * 0.10) + (1 * 0.05) + (2 * 0.02) + (1 * 0.12) + (0 * 0.10) + (2 * 0.10) + (3 * 0.16) + (0 * 0.06) + (1 * 0.11) + (2 * 0.28)E(X) = 0 + 0.05 + 0.04 + 0.12 + 0 + 0.20 + 0.48 + 0 + 0.11 + 0.56E(X) = 1.56
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find the area under the standard normal curve to the left of z=1.5.
the area under the standard normal curve to the left of z=1.5 is approximately 0.9332.
To find the area under the standard normal curve to the left of z=1.5, we need to use a standard normal distribution table.
The table will provide us with the area to the left of a given z-score. The z-score associated with the area to the left of z=1.5 is 0.9332. Therefore, the area under the standard normal curve to the left of z=1.5 is approximately 0.9332.
In order to find the area under the standard normal curve to the left of z=1.5, we will need to use a standard normal distribution table. A standard normal distribution table is used to find the area under the curve to the left of any given z-score. The area under the standard normal curve to the left of z=1.5 is the same as the probability of getting a z-score less than 1.5.
To find the area under the standard normal curve to the left of z=1.5, we need to first find the z-score associated with that area. We can find this by using a standard normal distribution table, which will give us the area to the left of any given z-score.
Using a standard normal distribution table, we find that the area to the left of a z-score of 1.5 is approximately 0.9332.
Therefore, the area under the standard normal curve to the left of z=1.5 is approximately 0.9332.
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Evaluate the following expression using the order of operations.
2[18−(5+3² )÷7]
Step-by-step explanation:
2[18-(5+3^2)÷7]
= 2[18-(5+9)÷7]
= 2[18-14÷7]
= 2[18-2]
= 2of16
=2×16
= 32
Answer:
ibjjjjjjjjn ihbuuxzxy
Step-by-step explanation:
someone please answer this !! thank you!
Answer: answer 4
Step-by-step explanation:
2(x 2 −1)+3x(x−4)
Use the distributive property to multiply 2 by x ^2 −1.
2x^2 −2+3x(x−4)
Use the distributive property to multiply 3x by x−4. 2
2x^2 −2+3x 2 −12x
Combine 2x^ 2 and 3x ^2 to get 5x ^2 .
5x 2 −2−12x
Then put it in its formula order and you get
5x^2 -12x -2
kinda hard to do with it in this but i hope this helps
PLZ HELP
Enter an inequality that represents the description, and then solve.
Dave has $11 to spend on a $6 book and two birthday cards (c) for his friends. How much can he spend on each card if he buys the same card for each friend?
Inequality:
Dave can spend up to $_________ on each card if he buys the same card for each friend.
Answer: $3
Step-by-step explanation:
Answer:
$2.50 because if you subtract 6 from 11 you get 5 and 5 divides by 2 is 2.50
Step-by-step explanation:
Kenzie finished recording the last song for her new album. The song was 4 minutes and 47 seconds long. The song must be within 30 seconds of 250 seconds long to fit in the recording space left on the album. Write an absolute value inequality to represent the situation and solve. Will the last song fit on the album?
Answer:
a. ║ t - 250 ║ = 30. b. The last song will fit into the album.
Step-by-step explanation:
a. Since the song must be within 30 seconds of 250 seconds to fit in the recording space left on the album, let t be the time duration of the song. So, for it to be within 30 seconds of 250 seconds, the expression is
t - 250 = ±30 or ║ t - 250 ║ = 30.
b. Since the song is 4 minutes and 47 seconds long, converting this to seconds, it is 4 × 60 s + 47 s = 240 s + 47 s = 287 s.
Inserting t into the left side of the equation t - 250 = 287 - 250 = 27 s which is less than 30 s. Since the time difference is less than 30 s, the last song will fit into the album.
In a bag of 50 colored candies,
24% of the candies are green. How many of the
candies are green?
Answer:
12
Step-by-step explanation:
you take 50 diveded by .24 (for 24%) which is 12
Answer:
48%, or 24 candies
Step-by-step explanation:
Since there is 50 candies, and the percentenc is based on 100%, you can double the percent of the amount of green candies to see how many there are.
simplify the expression
algebra 2 high school math part 2
Answer:
6x^3y^2z sqrt.6xyz
Step-by-step explanation:
Answer:
Step-by-step explanation:
The z's have a line across them
A scuba diver descends 120 feet underwater in 5 minutes. What is the scuba diver's rate?
The scuba diver's rate is 24 feet per minute.
What is Rate of change?A rate of change is a rate that describes how one quantity changes in relation to another quantity.
Here, total distance covered underwater = 120 feet.
total time taken = 5 minutes.
Rate change = Distance covered / Time taken
= 120 / 5
= 24 ft per minute.
Thus, The scuba diver's rate is 24 feet per minute.
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The graph shows how fast a strand of human hair grows.
How many inches would the hair have grown in 5 months?
-
Growth (inches)
2 3
Time months
11
2
21
2
Answer:
I believe your answer is 11
Ari has a total of 22 coins consisting of pennies and nickels. The total value of the coins is $0.54.
Which equation can be used to find the number of pennies Ari has?
A. 0.01p + 0.05(0.54 – p) = 22
B. 0.01p + 0.05(22 – p) = 0.54
C. 0.01p + 1.1 = 0.54
D. p + 5(22 – p) = 0.54
answer:
B. 0.01p + 0.05(22 – p) = 0.54
(got it correct on edgenuity)
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
which of these is not an outcome? a.) drawing a king of diamonds from a standard deck of cards b.) rolling a 4 on a die c.) flipping heads on a coin d.) rolling an even number that is less than 2 on a die
d) Rolling an even number that is less than 2 is not a valid outcome when rolling a die.therefore, option d) is correct.
The outcome that is not possible is (d) rolling an even number that is less than 2 on a die.
A standard die has six sides numbered from 1 to 6, and all the even numbers on a standard die are 2, 4, and 6.
The statement "rolling an even number that is less than 2" contradicts the fact that the lowest even number on a die is 2.
Thus, it is not possible to roll an even number that is less than 2 on a standard die, making it an invalid outcome.
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Diana bought two dolls for her nieces.How much did each doll cost,if she purchased them for $70
Answer:
each doll cost $35
Answer:
The dolls cost $35 dollars each
Step-by-step explanation:
Because $70 ÷ 2 dolls = $35 dollars each
(sorry if wrong!)
6x² + 73 + 8x5 + 9
What is the degree of the polynomial?
Answer:
when it is simplify it is 12×+122
Solve: X = -3y - 17 2x + 3y = -7
Answer:
X = 2 x − 10
y = − 2 /x 3 − 7 /3
Step-by-step explanation:
To get this you must solve y first. There are no variables to x so find y and put it into the equation. Substitute it and find X
Answer:
x = 10, y = - 9
Step-by-step explanation:
Given the 2 equations
x = - 3y - 17 → (1)
2x + 3y = - 7 → (2)
Substitute x = - 3y - 17 into (2)
2(- 3y - 17) + 3y = - 7 ← distribute and simplify left side
- 6y - 34 + 3y = - 7
- 3y - 34 = - 7 ( add 34 to both sides )
- 3y = 27 ( divide both sides by - 3 )
y = - 9
Substitute y = - 9 into (1) for corresponding value of x
x = - 3(- 9) - 17 = 27 - 17 = 10
Did I finally do this correctly?
Answer: Yea, Good job :)
Step-by-step explanation:
Does the following represent a proportional relationship? y = 4x + 6 O Yes O No
Answer:
Yes
Step-by-step explanation:
.Find the area of the region that lies under the parabola y=5x - x^2, where 1≤x≤4.
The area of the region under the parabola y = 5x - x^2, where 1 ≤ x ≤ 4, is 14.33 square units.
To find the area under the parabola, we need to integrate the equation y = 5x - x^2 with respect to x over the given interval [1, 4]. The integral represents the area between the curve and the x-axis.
Integrating y = 5x - x^2 gives us the antiderivative F(x) = (5/2)x^2 - (1/3)x^3 + C, where C is the constant of integration. To find the definite integral over the interval [1, 4], we evaluate F(4) - F(1).
F(4) = (5/2)(4)^2 - (1/3)(4)^3 + C = 40 - (64/3) + C
F(1) = (5/2)(1)^2 - (1/3)(1)^3 + C = 5 - (1/3) + C
Substituting these values into the definite integral expression, we have:
Area = F(4) - F(1) = (40 - (64/3) + C) - (5 - (1/3) + C)
= 14.33
The area of the region under the parabola y = 5x - x^2, where 1 ≤ x ≤ 4, is approximately 14.33 square units.
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Solve inequality and graph solution 3>4x-1
Answer: x < 1
--------------------
2x^2 + 8x factor out the gcf
Answer:
2x(x + 4)
Step-by-step explanation:
The greatest common factor of 2x^2 and 8x is 2x. So, we can factor out 2x to get:
2x(x + 4)
The definition of a greatest common factor (GCF) is the largest number that is a factor of two or more numbers. In this case, 2x is the GCF of 2x^2 and 8x because it is the largest number that divides both numbers evenly.
Here are the steps on how to factor out the GCF:
Find the GCF of the two numbers. In this case, the GCF is 2x. Write the GCF as a factor of each number. Combine the factors to get the factored expression.In this case, the factored expression is 2x(x + 4).
The answer is:
⇨ 2x(x + 4)Work/explanation:
Let's find something that [tex]\sf{2x^2}[/tex] and [tex]\sf{8x}[/tex] have in common.
In other words, we find their GCF (greatest common factor).
The GCF of [tex]\sf{2x^2}[/tex] and [tex]\sf{8x}[/tex] is 2x.
So I factor it out :
[tex]\sf{2x(x+4)}[/tex]
Hence, the answer is 2x(x + 4).Given the project within the table below, calculate the following: Activity Predecessor Time (days) A 7.5 B 9.7 C 10.5 D 8.8 E 10 F 4.2 G 9.7 H G 11.5 a. What is the project length? [ Select ] b. What activities are on the critical path? [Select ] c. How much slack is in activity A? [ Select] and activity B? [ Select] LL ļ A, C D B, E TI F
Based on the provided table, we can calculate the project length, identify the activities on the critical path, and determine the slack for activities A and B.
a. To calculate the project length, we need to determine the longest path through the project network.
This path is known as the critical path and represents the minimum time required to complete the project.
By summing up the durations of all activities on the critical path, we can find the project length.
b. Activities on the critical path are those that directly contribute to the project length. Any delay in these activities would cause a delay in the overall project completion.
By analyzing the dependencies and durations of the activities, we can identify which ones fall on the critical path.
c. Slack refers to the amount of time an activity can be delayed without delaying the project's overall completion. It is calculated by finding the difference between the latest start time and the earliest start time for each activity. For activities A and B, we can determine the slack by comparing their earliest and latest start times.
By performing the necessary calculations and analysis, we can provide the specific answers for the project length, critical path activities, and the amount of slack for activities A and B.
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Which inequality matches the graph?
A) x 3
C) x ≤ 3
D) x ≥ 3
An empirical study shows that the cash compensation of corporate chief executive officers (CEOs) of
104 companies increased in 2021. The average increase in compensation is X = 6.9%, and the known
population standard deviation (σ) is 5.5%.
a. Construct the 99% confidence interval for μ.
b. Write the null and alternative hypotheses for a test of whether the average compensation of all
CEOs increased in 2021.
c. What is the value of your test statistic. Which test statistic did you derive, z or t? Why?
d. Does the study give strong evidence that the average compensation of all CEOs went up? Use
α = 0.01.
a. The 99% confidence interval for μ is approximately (5.536%, 8.264%).
b. The alternative hypothesis (Ha) is: The average compensation of all CEOs increased in 2021.
c. The test statistic value is calculated using the formula:
Z = (X - μ) / (σ / sqrt(n))
d. if the p-value is less than the significance level (α = 0.01), we would reject the null hypothesis and conclude that there is strong evidence that the average compensation of all CEOs increased in 2021.
a. To construct the 99% confidence interval for the population mean (μ), we can use the formula:
CI = X ± Z * (σ / sqrt(n))
where X is the sample mean, Z is the Z-score corresponding to the desired confidence level (99% in this case), σ is the population standard deviation, and n is the sample size.
Given:
X = 6.9%
σ = 5.5%
n = 104
Confidence level = 99%
First, we need to find the Z-score corresponding to a 99% confidence level. Using a Z-table or statistical software, the Z-score is approximately 2.576.
Now we can plug in the values into the formula:
CI = 6.9% ± 2.576 * (5.5% / sqrt(104))
Calculating the values:
CI = 6.9% ± 2.576 * (0.5295%)
= 6.9% ± 1.364%
The 99% confidence interval for μ is approximately (5.536%, 8.264%).
b. The null hypothesis (H0) for testing whether the average compensation of all CEOs increased in 2021 is: The average compensation of all CEOs remained the same or decreased in 2021.
The alternative hypothesis (Ha) is: The average compensation of all CEOs increased in 2021.
c. To determine the test statistic, we need to know the sample mean, population standard deviation, sample size, and the distribution of the population. Since the population standard deviation (σ) is known and the sample size is relatively large (n > 30), we can use the Z-test.
The test statistic value is calculated using the formula:
Z = (X - μ) / (σ / sqrt(n))
where X is the sample mean, μ is the hypothesized population mean under the null hypothesis, σ is the population standard deviation, and n is the sample size.
However, the value of the test statistic is not provided in the given information.
d. To determine if the study gives strong evidence that the average compensation of all CEOs went up, we compare the p-value to the significance level (α).
Since the p-value is not given in the information provided, we cannot make a direct conclusion. However, if the p-value is less than the significance level (α = 0.01), we would reject the null hypothesis and conclude that there is strong evidence that the average compensation of all CEOs increased in 2021.
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3 15/16÷2 1/4 what is the answer please
Answer:
Step-by-step explanation:
÷
does any one else have to do edgenuity
Answer:
me i hate it but it not that hard tho
Step-by-step explanation:
1. Suppose you are doing an F-test to test the following hypothesis: H
0
:β
1
=0&β
2
=0&β
s
=0&β
4
=0 How many of these restrictions would need to be violated in order to reject the null hypothesis?
(a) 0
(b) 1
(c) 2
(d) 3
(e) 4
In an F-test, the null hypothesis typically states that all specified coefficients are equal to zero. In this case, the null hypothesis is:
H0: β1 = 0, β2 = 0, βs = 0, and β4 = 0
To reject the null hypothesis, we need to find evidence that at least one of these restrictions is violated. This means that if we can show that any one of the coefficients (β1, β2, βs, or β4) is significantly different from zero, it would provide sufficient evidence to reject the null hypothesis.
Therefore, if any one of these restrictions is violated, meaning that its corresponding coefficient is not equal to zero, it would lead to rejecting the null hypothesis. In this case, only one violation among β1, β2, βs, or β4 is needed to reject the null hypothesis. Hence, the correct answer is:
(b) 1
It's important to note that the specific restriction that is violated can be different for each case, but as long as one restriction is violated, we have enough evidence to reject the null hypothesis in an F-test.
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answer choices:
116 degrees
54 degrees
62 degrees
25 degrees
Answer:
62 is the answer
Step-by-step explanation:
I need 20 characters but please help
Answer: the slope is m = 3/5 and the
y-intercept point: (0 , [tex]-\frac{13}{5}[/tex] )
Step-by-step explanation:
Answer:
Slope: 3/5, y-intercept: -13/5
Step-by-step explanation:
In slope intercept form (y=mx+b), the slope is the coefficient in front of x (m), and the y intercept is b. Let's simply the equation into slope intercept to find the slope and y intercept.
3x - 5y = 13
-5y = -3x + 13
y = 3/5x - 13/5
So the slope is 3/5 and the y-intercept is -13/5
