x = 1 and y = -2
as an ordered pair: (1,-2)
quick im sweatinggggggg
Answer:
The answer is 10^5
Step-by-step explanation:
10^5 is 100,000 and 1200 divided by 100,000 equals 0.012.
Has the marrying age of a man changed over the years? The United States Bureau of the Census takes a formal count of everyone in the U.S. every 10 years and has provided the following data that gives the median age of an American man at the time of his first marriage.
Year
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
Median Age
25.1
24.6
24.3
24.3
22.8
22.8
23.2
24.7
26.1
26.8
Determine the average rate of change in median age per year from 1930 to 1960.
a.
-0.5 years of age per year
b.
20 years of age per year
c.
-0.05 years of age per year
d.
+0.05 years of age per year
Please select the best answer from the choices provided
A
B
C
D
The data below give the number of books checked out of the school library by 15 students
during one month. Make a frequency table of the data.
0, 3, 2, 3, 2, 1, 1, 0, 1, 2, 5, 1, 2, 3, 1. (Sorry if the photo is hard to see) I need the answer ASAP!
Answer: I think C
Step-by-step explanation:
Okay, here is the frequency table for the given data:
Number of books Frequency
0 3
1 4
2 4
3 3
5 1
Let me walk you through how I created this frequency table:
The data gives the number of books checked out by 15 students
I listed the possible numbers of books (0, 1, 2, 3, 5) in the first column
For each number, I counted how many times it appeared in the data.
So 0 appears 3 times, so under frequency I wrote 3
1 appears 4 times, so frequency is 4
2 appears 4 times, so frequency is 4
3 appears 3 times, so frequency is 3
5 appears only once, so frequency is 1
Answer:
Last table
Step-by-step explanation:
Given-
0,3,2,3,2,1,1,0,1,2,5,1,2,3,1
As we can see based on the given, there are;
Two ⇒ 0
Five ⇒ 1
Four ⇒ 2
Three ⇒ 3
Zero ⇒ 4
One ⇒ 5
Table---------------------------------------------------------------
Number of Books ║ 0 ║ 1 ║ 2 ║ 3 ║ 4 ║ 5 ║
Tally ║ || ║||||| ║ |||| ║ ||| ║ ║ | ║
Frequency ║ 2 ║ 5 ║ 4 ║3 ║ 0 ║ 1 ║
According to the tables given we can see that [D] also known as the last table matches the data given.
Xkavinsky-
Leo wants to paint a mural that covers a wall with an area of 300 square feet. The height of the wall is 13 of its length. What is the length and the height of the wall?
Answer:
l=30ft
h=10ft
Step-by-step explanation:
Area 'A' is defined as the product of length and height
\(A=lh=300ft^2\\h= \frac{1}{3} l\)
\(\\300=l( \frac{1}{3}l)\\300=\frac{1}{3} l^{2}\\900=l^{2}\\30=l\\l=30ft\\\\h= \frac{1}{3}(30)\\h=10ft\)
Thus, the length and the height of the wall is 30 ft and 10 ft respectively.
a recipe for 12 specialty cookies calls for 5 cups of flour. how many cups of flour are needed for 7 of these cookies?
Based on the recipe, 3 cups of flour are required to make 7 cookies.
The number of cups of flour can be calculated using ratio and proportion. Now equating the two ratio based on original recipe and preparation of cookies.
Forming the proportion -
12 : 5 = 7 : x
Rewriting the equation as per the x
x = (7 × 5) ÷ 12
Performing multiplication in numerator on Right Hand Side of the equation to find the value of x
x = 35 ÷ 12
Performing division on Right Hand Side of the equation to find the value of x
x = 2.92
Rounding off the number to find the number of cups of flour.
Number of cups of flour = 3
Thus, 3 cups of flour are needed for 7 cookies.
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PLS EXPLAIN IF U CAN
Find the remaining trigonometric functions of if csc = 29/ 21 and cos < 0
Answer:
If csc = 29/21, then the reciprocal of this is equal to the sine of the angle. So,
sin = 21/29.
Since cosine is less than 0, then the angle must be in the second or third quadrant, which means that the sine of the angle must be positive. So,
sin = 21/29, and cos = -√(1 - sin^2) = -√(1 - (21/29)^2)
Next, we can find the tangent by taking the ratio of sine to cosine:
tan = sin / cos = 21/29 / -√(1 - (21/29)^2) = -21/√(841 - 441)
Finally, we can find the cotangent by taking the reciprocal of the tangent:
cot = 1 / tan = -√(841 - 441) / 21
So, the remaining trigonometric functions are:
sin = 21/29
cos = -√(1 - (21/29)^2)
tan = -21/√(841 - 441)
cot = -√(841 - 441) / 21
What is the y-intercept of A line has a slope of -3 and passes through point (-5,4)?
Answer:
-11
Step-by-step explanation:
Which correlation coefficient best represents a moderate relationship showing fewer anxiety symptoms.
The correlation coefficient that best represents a moderate relationship showing fewer anxiety symptoms is a negative correlation coefficient.
In a negative correlation, as one variable increases, the other variable decreases. In the context of anxiety symptoms, a negative correlation would indicate that as one factor (e.g., a particular intervention, treatment, or activity) increases, the number or severity of anxiety symptoms decreases. This suggests a moderate relationship between the two variables, indicating that the higher the value of the independent variable, the lower the value of the dependent variable (in this case, fewer anxiety symptoms).
The correlation coefficient ranges from -1 to 1, with -1 representing a perfect negative correlation, 0 representing no correlation, and 1 representing a perfect positive correlation. A correlation coefficient close to -1, but not reaching -1, would be indicative of a moderate negative correlation and would best represent a moderate relationship showing fewer anxiety symptoms.
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A sample of 36 observations is selected from a normal population. The sample mean is 12, and the population standard deviation is 3.
Conduct the following test of hypothesis using the 0.01 significance level.
H0: μ ≤ 10 H1: μ > 10
a. Is this a one- or two-tailed test? multiple choice 1 One-tailed test Two-tailed test
b. What is the decision rule? multiple choice 2 Reject H0 when z > 2.326 Reject H0 when z ≤ 2.326
c. What is the value of the test statistic?
d. What is your decision regarding H0? multiple choice 3 Reject H0 Fail to reject H0
e-1. What is the p-value? e-2. Interpret the p-value?
The calculated test statistic (z = 4) exceeds the critical value (z = 2.326), we reject the null hypothesis H0.
the alternative hypothesis that the population mean is greater than 10.
a. This is a one-tailed test because the alternative hypothesis (H1) is specifying a direction (greater than).
b. The decision rule is to reject H0 when the test statistic exceeds the critical value. Since the significance level is 0.01, we need to find the critical value corresponding to this level. For a one-tailed test, with a significance level of 0.01, the critical value is z = 2.326.
c. The value of the test statistic can be calculated using the formula:
z = (sample mean - population mean) / (population standard deviation / sqrt(sample size))
z = (12 - 10) / (3 / sqrt(36))
z = 2 / (3/6)
z = 2 / 0.5
z = 4
d. Since the calculated test statistic (z = 4) exceeds the critical value (z = 2.326), we reject the null hypothesis H0.
e-1. The p-value can be calculated by finding the area under the standard normal curve to the right of the test statistic (z = 4). The p-value is the probability of observing a test statistic as extreme as the one calculated or more extreme, assuming the null hypothesis is true.
Using a standard normal distribution table or a calculator, we find that the p-value is very close to 0 (p < 0.0001).
e-2. Interpretation of the p-value: The p-value of less than 0.0001 indicates that the probability of observing a sample mean as extreme as 12, or more extreme,
assuming the null hypothesis is true, is extremely low. This provides strong evidence against the null hypothesis, supporting the alternative hypothesis that the population mean is greater than 10.
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HELP ! A phone company offers two monthly plans. Plan A costs $30 plus an additional $0.03 for each minute of calls. Plan B has no initial fee but costs $0.18 for each minute of calls. What is the cost when the two plans cost the same for a set number of minutes?
Group of answer choices
$100
$200
$36
$30
The cost when the two plans cost the same for a set number of minutes is $36. Option C is correct.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Plan A costs $30 plus an additional $0.03 for each minute of calls.
This can be expressed in equation as
y=30+0.03x
Plan B has no initial fee but costs $0.18 for each minute of calls.
y=0.17x
Now we have to find the cost when the two plans cost the same for a set number of minutes
30+0.03x=0.18x
30=0.18x-0.03x
30=0.15x
Divide both sides by 0.15
x=200
when the number of minutes of calls is 200, the two plans cost the same.
To find the cost when the two plans cost the same,
we can substitute x = 200 into either expression for Cost_A or Cost_B:
Cost_A = 30 + 0.03(200) = $36
Cost_B = 0.18(200) = $36
Therefore, the cost when the two plans cost the same for a set number of minutes is $36. Option C is correct.
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Determine the amplitude of the function y = negative one-half cosine x. On a coordinate plane, a function curves up from (0, negative 0.5) through (1.5, 0) to (3, 0.5). a. -1 c. One-half b. -Negative one-half d. 2
Step-by-step explanation:
The amplitude is the value that the cosine is being multiplied by.
The general equation of a sinusoid is
\( a \cos(b(x + c) ) + d\)
where a is the amplitude
\( \frac{2\pi}{ |b| } \)
is the period
-c is the phase shift
d is the midline(vertical shift)
Here the amplitude is -1/2 so b is the correct answer.
Answer:
the amplitude of the function that is y= -1/2 cos x, is 1/2.
Step-by-step explanation:
solve problems 3 and 4 in homework 2 by constructing confidence intervals about the parameters to be tested, rather than performing hypothesis testing. do you get the same results as before?
Confidence intervals provide more information than hypothesis tests as they give an estimate of the parameter value as well as a range of plausible values, whereas hypothesis tests only give a decision about the null hypothesis.
To solve problems 3 and 4 in homework 2 by constructing confidence intervals about the parameters to be tested, rather than performing hypothesis testing, we need to take the following steps:
Step 1: Calculate the sample mean and sample standard deviation from the given data.
Step 2: Calculate the standard error (SE) using the formula: SE = σ / √n`,
where `σ` is the population standard deviation (if known), or the sample standard deviation (if population standard deviation is unknown)
and `n` is the sample size.
Step 3: Calculate the margin of error (ME) using the formula: `ME = z * SE`,
where `z` is the z-score corresponding to the desired level of confidence.
Step 4: Calculate the confidence interval (CI) using the formula: `CI = sample mean ± ME.
Step 5: Interpret the confidence interval in the context of the problem.
Statement: Do you get the same results as before.
No, we do not get the same results as before.
When we construct a confidence interval, we obtain a range of plausible values for the parameter with a certain level of confidence, whereas in hypothesis testing, we either reject or fail to reject the null hypothesis based on the sample data at a certain level of significance.
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what is the average of x, 2x and 6
Answer:
Hope it will help you :)
Step-by-step explanation:
3. Identify the Y-Intercept from the graph:
Answer:
Answer
Step-by-step explanation:
The y-intercept is 2 because on (2,0) that's where the line crosses on the y axis.
Answer:
The Y intercept is 2 good luck
Step-by-step explanation:
The Y intercept is the number that the line EXACTLY crosses through
A woven rattan basket can hold up 6 lbs of items. A net bag of 4 oranges weighs 12 ounces. How many bags of oranges can the basket hold ?
\(\huge\boxed{8\ \text{bags of oranges}}\)
Let's first find how many ounces the basket can hold.
1 pound is equal to 16 ounces. Multiply that to find how many ounces the basket can hold.
\(6\cdot16=96\)
Now, divide the weight held by the basket by the weight of each bag of oranges.
\(96\div12=\boxed{8}\)
slope intersect form
4y-4x=-28
Answer:
y = x - 7
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c
Given
4y - 4x = - 28 ( add 4x to both sides )
4y = 4x - 28 ( divide terms by 4 )
y = x - 7 ← in slope- intercept form
PLEASE HELP ASAP! WILL MARK BRAINIST! PLEASE PLEASE
Answer:
Step-by-step explanation:
its c
Find the exact value of x
Answer:
well, the value of x is unknown
how many permutations of {a,b,c,d,e,f} have b between a and c? examples are dfaebc and cbaedf
The number of permutations of {a, b, c, d, e, f} that have b between a and c is 120. To determine the number of permutations, we need to consider the positions of a, b, and c in the sequence.
Since b must be between a and c, there are three possible positions for b: either it comes after a and before c (abc), after c (acb), or before a (bac).
Once the positions of a, b, and c are fixed, the remaining three letters (d, e, f) can be arranged in any order. Since there are 3! = 6 ways to arrange the remaining three letters, the total number of permutations with b between a and c is 3 * 6 = 18.
However, for each of the three arrangements (abc, acb, bac), the remaining three letters (d, e, f) can be arranged in 3! = 6 different ways. Therefore, the total number of permutations is 3 * 6 = 18 * 6 = 120.
Hence, there are 120 permutations of {a, b, c, d, e, f} that have b between a and c, such as dfaebc and cbaedf.
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For the point (r,θ), r is the _____ from O to P and θ is the _____ counterclockwise from the polar axis to the line segment ¯¯¯¯¯¯¯¯OP.
In the point (r, θ), r signifies the distance from O to P, while θ represents the angle counterclockwise from the polar axis to the line segment ¯¯¯¯¯¯¯¯OP.
For the point (r, θ), r is the distance from O to P, and θ is the angle counterclockwise from the polar axis to the line segment ¯¯¯¯¯¯¯¯OP.
In polar coordinates, a point is represented by its distance (r) from the origin (O) and the angle (θ) it forms with the positive x-axis. The distance (r) denotes the length of the line segment connecting the origin to the point P. It indicates how far the point is from the origin. The angle (θ) represents the rotation or angular position of the line segment ¯¯¯¯¯¯¯¯OP from the polar axis (positive x-axis) in a counterclockwise direction. It determines the direction in which the point is located relative to the polar axis.
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Find the volume of the figure below.
Answer:
0.6
Step-by-step explanation:
10ft of object and 6ft of ground side
The area of a rectangle is represented by the expression x^2-9x+14 units^2. Find the expressions that could represent the length and width of the rectangle
The expressions that could represent the length and width are (x - 2) units and (x - 7) units respectively.
To find the expressions that represent the length and width of the rectangle, we need to factor the given expression.
x² - 9x + 14 = (x - 2)(x - 7)
The length and width of the rectangle are represented by two factors of the expression.
To find the length and width of the rectangle, we need to understand the formula for the area of a rectangle, which is length multiplied by width. The given expression x²-9x+14 represents the area of the rectangle. To find the expressions that represent the length and width, we need to factor the given expression.
We can do this by finding two numbers that multiply to 14 and add up to -9. These numbers are -2 and -7. Therefore, we can factor the given expression as (x - 2)(x - 7). From this, we can see that the length of the rectangle is represented by the factor (x - 2) units and the width is represented by the factor (x - 7) units.
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9. You can buy 6 bracelets at Toy Barn for $5.40. You can buy 11 of the same
bracelets at the Dollar Deals for $10.50. (a)How much does it cost per bracelet at
each store? (b)Which store has the better buy?
Answer:
Solutions below.
Step-by-step explanation:
a) To solve this question, we can use the formula.
Average Cost per Bracelet = Total Price ÷ Number of Bracelets.
Toy Barn
Average Cost = $5.40 ÷ 6 = $0.90 per bracelet
Dollar Deals
Average Cost = $10.50 ÷ 11 = $0.95 per bracelet (rounded off to 2 decimal places)
b) The better deal comes with a lower price per bracelet, in this case, Toy Barn has a better deal.
The endpoints of a circle's diameter are (5, -4) and (5, 4). What is the area of the circle in terms of pi?
Answer:
Step-by-step explanation:
d and r are the diameter and radius, respectively.
d = 8 units
r = 8/2 = 4 units
area = πr² = 16π square units.
Which of the following is equivalent to -(-7)?
-6
8
-7
7
Answer:
-7
Step-by-step explanation:
-7 is the equivalent to -(-7) because there are 2 negative signs
Answer:
The way you explained this question is confusing so I think it is -7
Let F(x) be an antiderivative of (ln x)^3/x. If F(1) = 0, then F(9) =
a. .048
b. .144
c. 5.827
d. 23. 308
e. 1,640.250
the value of F(9) is approximately 23.308.
To find the value of F(9) given that F(x) is an antiderivative of (ln x)^3/x and F(1) = 0, we can use the fundamental theorem of calculus.
According to the fundamental theorem of calculus, if F(x) is an antiderivative of a function f(x), then:
∫[a,b] f(x) dx = F(b) - F(a)
Since F(1) = 0, we can write:
∫[1,9] (ln x)^3/x dx = F(9) - F(1)
To evaluate the integral, we can make a substitution:
Let u = ln x, then du = (1/x) dx
The integral becomes:
∫[ln 1, ln 9] u^3 du
Integrating u^3 with respect to u:
[(1/4)u^4] | [ln 1, ln 9] = (1/4)(ln 9)^4 - (1/4)(ln 1)^4
Since ln 1 = 0, we have:
(1/4)(ln 9)^4 - (1/4)(ln 1)^4 = (1/4)(ln 9)^4
Therefore, F(9) - F(1) = (1/4)(ln 9)^4
Since F(1) = 0, we can conclude that F(9) = (1/4)(ln 9)^4.
Calculating this value:
F(9) = (1/4)(ln 9)^4 ≈ 23.308
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15.625 rational or irrational
Answer:
rational number
Step-by-step explanation:
it doesnt keep going ,it stops unlike pi were pi continues to go on forever
Answer:
Its rational
Step-by-step explanation:
Rational numbers can be made by dividing 2 integers. And it's a either a termination or repeating decimal.
And 15.625 is a terminating decimal.
hihihihihihihihihihi
hi
Answer:
hi
Explanation:
hi
You pick a card at random. Without putting the first card back, you pick a second card at random
What is the probability of picking an odd number and then picking an even number?
The probability of picking an odd number and then picking an even number 5/18
The probability of picking an odd number on the first card is 1/2 since there are 5 odd cards out of 10 total cards. After picking an odd card, there are now 4 odd cards and 5 even cards left out of a total of 9 cards. So the probability of picking an even card on the second draw is 5/9.
To find the probability of both events happening, we multiply the probabilities:
P(odd and even) = P(odd) * P(even | odd)
= (1/2) * (5/9)
= 5/18
Therefore, the probability of picking an odd number and then picking an even number is 5/18.
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Please answer this correctly I’ll mark you brainlist! :)
Answer:
53
Step-by-step explanation:
\(8 - \frac{m}{n} + {p}^{2} \\ \\ (plug \: m = 8, \: \: n = 2, \: \: p = 7) \\ \\ = 8 - \frac{8}{2} + {7}^{2} \\ \\ = 8 - 4 + 49 \\ \\ = 4 + 49 \\ \\ = 53\)
Answer:53
Step-by-step explanation:
substitute the letters for the numbers then use pemdas