Answer:
yes and no i am never wrong
Step-by-step explanation:
bug brain
Waldnice!
8. I have a maximum/minimum thermometer in my greenhouse. It records the highest and
lowest temperatures reached since the time I reset it. I reset it on Sunday when the
temperature was 4°C. Overnight the temperature fell by 5°C. Then during Monday it rose by
6°C. before falling by 10°C during the night. On Tuesday it rose by 4°C and fell by 2°C
overnight.
What were the maximum and minimum temperatures recorded when I looked at the
thermometer on Wednesday morning?
Answer:
The maximum and minimum temperatures recorded by the thermometer when checked by Wednesday morning are 5°C and -5°C
Step-by-step explanation:
The given parameters are;
A maximum and minimum thermometer is used which records maximum and minimum values as follows;
Initial temperature on Sunday at the time of resetting the thermometer = 4°C
Temperature drop overnight = 5°C, new low = 4 - 5 = -1°C,
Temperature rise on Monday = 6°C. New high = -1 + 6 = 5°C
Temperature drop on Monday night = 10°C. New low = 5 - 10 = -5°C
Temperature rise on Tuesday = 4°C = New high = 4 + - 5 = -1°C
Temperature drop on Tuesday night = 2°C. New low = -1 - 2 = -3°C
Therefore, the maximum and minimum temperatures recorded by the thermometer when checked by Wednesday morning are 5°C and -5°C.
in a normal distribution, 95.4% of the values fall between 5.8 and 10.6. compute the mean of the distribution.
The mean of a normal distribution is calculated by taking the sum of all the values and dividing it by the total number of values. In this case, the values were between 5.8 and 10.6, and the total number of values was 95.4%
The mean of a normal distribution is calculated by taking the sum of all the values and dividing it by the total number of values. In this case, the values are between 5.8 and 10.6, and the total number of values is 95.4%.
To calculate the mean, we must first calculate the sum of all the values. To do this, we will use the following formula:
sum of values = (lowest value + highest value) / 2
In this case, the lowest value is 5.8 and the highest value is 10.6, so the sum of values is 8.2.
We now have the sum of all the values, so we can calculate the mean by dividing the sum by the total number of values. The total number of values is 95.4%, so the mean is 8.2 / 0.954 = 8.57.
Therefore, the mean of the normal distribution is 8.57.
In conclusion, the mean of a normal distribution is calculated by taking the sum of all the values and dividing it by the total number of values. In this case, the values were between 5.8 and 10.6, and the total number of values was 95.4%. When the sum of all the values (8.2) was divided by the total number of values (0.954), the mean was calculated to be 8.57.
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The product of 9 and the sum of a number x and 4 is 6
Answer:
9(x+4)= 6
Step-by-step explanation:
I could be wrong but im not sure
What is the y-intercept of the linear equation shown on the graph?
Answer:
-50
Step-by-step explanation:
Simplify: \((8^{\frac{2}{3}) ^{4} }\)
\({ \large{ \sf{ \implies{(8 {}^{ \frac{2}{3} }) {}^{4} }}}}\)
\({ \large{ \sf{ \implies( \sqrt[3]{8} {}^{2} ) {}^{4} }}}\)
\({ \large{ \sf{ \implies{{(2 {}^{2} ) {}^{4} }}}}}\)
\({ \large{ \implies{ \sf{4 {}^{4} }}}}\)
\({ \large{ \therefore{ \sf{256} \: \: ans.}}}\)
in 2006, china had 1.311 x 10^8 internet users. the same year, japan had 9.09 x 10^7 internet users. how many internet users did the two countries have combined? what operation will be used to solve this problem?
Answer:
estudia no seas huevon
Step-by-step explanation:
wuuang wo chi zu woang tu wunng cha chu chimga tu madre
xxd
Find the surface area of the prism. 13cm 16cm 5cm 12cm
the surface area of the prism is 706 cm². To find the surface area of a prism, we need to add up the areas of all its faces.
A prism is a three-dimensional shape that has two parallel and congruent bases that are connected by rectangular sides. Therefore, the surface area of a prism consists of two congruent base areas and the area of all rectangular sides.
In this case, we have a rectangular prism with a length of 13 cm, a width of 16 cm, and a height of 5 cm. To find the surface area, we can start by calculating the area of the two rectangular bases. The area of a rectangle is found by multiplying its length by its width, so the area of each base is 13 cm x 16 cm = 208 cm².
Next, we need to calculate the area of all four rectangular sides. Since there are four sides, we need to multiply the perimeter of the base (the sum of the lengths of all four sides) by the height of the prism. The perimeter of the base is 2(13 cm + 16 cm) = 58 cm, so the total area of all four rectangular sides is 58 cm x 5 cm = 290 cm².
Finally, we can find the total surface area of the prism by adding the areas of the two bases and the area of all four sides. Therefore, the surface area of the prism is:
Surface area = 2(base area) + (area of all sides)
Surface area = 2(208 cm²) + 290 cm²
Surface area = 706 cm²
Therefore, the surface area of the prism is 706 cm². It is important to understand how to find the surface area of different shapes since it is a common concept in mathematics and is often used in real-life applications, such as calculating the amount of paint needed to cover a surface or the amount of wrapping paper needed to wrap a gift box.
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2. (Stock and Watson #13.2) For the following Calculations, use the results in column (4) of Table 13.2. Consider two classrooms. A and B. with identical values of the regressors in column (4) of Tabic 13.2. except that: a. Classroom A is a "small class" and classroom B is a "regular class." Construct a 95% confidence interval for the expected difference in average test scores. b. Classroom A has a teacher with 5 years of experience and classroom B has a teacher with 10 years of experience. Construct a 95% confidence interval for the expected difference in average test scores. c. Classroom A is a small class with a teacher with 5 years of experience and classroom B is a regular class with a teacher with 10 years of experience. Construct a 95% confidence interval for the expected difference in average test scores. (Hint: In STAR, the teachers were randomly assigned to the different types of classrooms.) d. Why is the intercept missing from column (4)?
Construct a 95% confidence interval for the expected difference in average test scores between the small class (Classroom A) and the regular class (Classroom B),
a. You can follow these steps:
1. Refer to column (4) of Table 13.2 and find the results for the regressors.
2. Calculate the standard error of the difference in average test scores using the formula:
SE(difference) = sqrt[SE(Classroom A)^2 + SE(Classroom B)^2]
where SE(Classroom A) and SE(Classroom B) are the standard errors for each class.
3. Calculate the margin of error (ME) by multiplying the critical value (z*) corresponding to a 95% confidence level by the standard error (SE).
4. Finally, construct the confidence interval by subtracting the margin of error from the difference in average test scores and adding it to the difference in average test scores.
b. To construct a 95% confidence interval for the expected difference in average test scores between the small class with a teacher with 5 years of experience (Classroom A) and the regular class with a teacher with 10 years of experience (Classroom B), you can follow similar steps as in part a. However, this time you need to account for the difference in teacher experience as a regressor.
c. To construct a 95% confidence interval for the expected difference in average test scores between the small class with a teacher with 5 years of experience (Classroom A) and the regular class with a teacher with 10 years of experience (Classroom B), you can follow similar steps as in part a. However, this time you need to consider both the class type and teacher experience as regressors.
d. The intercept is missing from column (4) because it represents the expected average test score when all the regressor variables are equal to zero. In this case, the intercept is not relevant to the question being asked, so it is not included in the table.
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Correct answer gets brainliest
A triangular pyramid has four congruent faces. The triangular face measures 11 inches high and 8 inches across the base. What is the total surface area of the pyramid?
Answer: sa=b+la
Step-by-step explanation:
i
Solve the equation.
\(\sqrt{(x+2)(x-3)} =0\)
Answer:
Step-by-step explanation:
\(\sqrt{(x + 2)(x - 3)} = 0 \\\\ (x + 2)(x - 3) = 0 \\\\\ x^2 - 3x + 2x - 6 = 0 \\\\ x^2 - x - 6 = 0 \\\\ \Delta = (- 1)^2 - 4.1.(- 6) \\\\ \Delta = 1 + 24 \\\\ \Delta = 25 \\\\ x_1 = \frac{1 + \sqrt{25}}{2} = \frac{ 1 + 5}{2} \\\\\ x_1 = 3 \\\\\\ x_2 = \frac{1 - \sqrt{25}}{2} \\\\\\ x_2 = \frac{1 - 5}{2} \\\\\ x_2 = - 2\)
S = {x E R/x = 3 and x = - 2}
I hope I've helped you
a box with a square base and open top must have a volume of . we wish to find the dimensions of the box that minimize the amount of material used. first, find a formula for the surface area of the box in terms of only , the length of one side of the square base. simplify your formula as much as possible. next, find the derivative, .
The formula for the surface area of the box, in terms of the length of one side of the square base (s), is A = s^2 + 4s^2 = 5s^2.
The derivative of the surface area function with respect to s, denoted as dA/ds, gives us the rate of change of the surface area with respect to the length of one side of the base.
1. The surface area of the box consists of the area of the square base and the four equal sides. The area of the square base is s^2, and each side has a length of s. Therefore, the total surface area is given by A = s^2 + 4s^2 = 5s^2.
2. To find the derivative of the surface area function, we differentiate 5s^2 with respect to s using the power rule of differentiation. The power rule states that if we have a function f(x) = cx^n, then the derivative is f'(x) = cnx^(n-1).
Applying the power rule, we have dA/ds = d(5s^2)/ds = 10s.
3. The derivative, dA/ds = 10s, represents the rate of change of the surface area with respect to the length of one side of the square base. This means that for every unit increase in s, the surface area increases by 10s units.
The derivative does not provide information about minimizing the amount of material used. To find the dimensions of the box that minimize the amount of material used, we need to set up an optimization problem and solve for the critical points. This involves setting the derivative equal to zero and finding the values of s that satisfy this equation. However, since the problem statement does not provide a specific volume constraint or objective function, we cannot proceed with the optimization process.
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Help me out with this question please
Miley earns $10 per hour babysitting. Is the amount of money earned proportional to the number of hours she spends babysitting? If it is proportional, find the constant of proportionality, explain what it means, and write an equation to represent the situation. Then find out how much she would make for babysitting 5.5 hours.
Answer:
think what constant of proportionality is
Step-by-step explanation:
Help will give brainlist
Answer:
I think it's D also
Step-by-step explanation:
D is my best answer plus I don't think it would be negative and it would be a fraction
Write 1 specific conditional statement of your
realizations from the pandemic that is happening
today. Then, write the other forms of it namely:
CONVERSE, INVERSE and CONTRAPOSITIVE.
Answer:
Plzzzz answer fastPlzzzz answer fast......
Emily wins 22000$. She has to pay 10% for charity and then she decides to buy a car for 10800$. She divides the rest of them between her son and daughter in the ratio 1:4. How much does her daughter get.
Answer:
$7 200
Step-by-step explanation:
Amount of money paid for charity = \(\frac{10}{100}\) × $22 000
= $2 200
Remaining money left for children = $22 000 - $2 200 - $10 800
= $9000
Let the amount of money her son receives be x and the amount her daughter gets be 4x.
Son's $ + Daughter's $ = $9000
x + 4x = 9000
5x = 9000
Amount of money her daughter gets (4x) = \(\frac{4}{5}\) × 9000
= $7 200
Can someone help me with this math one to please and thank you
sing a TI-84 calculator, find the area under the standard normal curve to the left of the following z-values. Round the answers to four decimal places. Part 1 of 4 The area to the left of z= 1.07
The area to the left of z=1.07 is approximately 0.8577 (rounded to four decimal place. To find the area under the standard normal curve to the left of z = 1.07 using a TI-84 calculator.
Follow these steps:
1. Press the "2nd" button, then press "Vars" to access the "DISTR" menu.
2. Scroll down to "normalcdf(" and press "Enter".
3. Enter -99999 (or -E99) as the lower limit, since we want to find the area to the left of z = 1.07, which is very close to negative infinity.
4. Enter 1.07 as the upper limit, since we want to find the area to the left of this value.
5. Enter 0 as the mean, since we're working with the standard normal distribution.
6. Enter 1 as the standard deviation, since we're working with the standard normal distribution.
7. Press "Enter" to calculate the area.
The answer should be approximately 0.8577 when rounded to four decimal places.
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Now change matrix B to a 3 x 3 matrix and enter these values for B:
B =
1.2 1.4 3.1
2.2 1.1 5.6
3.7 4.2 6.7
Then select A • B to calculate the product:
77 39 −33
1.2 1.4 3.1
2.2 1.1 5.6
3.7 4.2 6.7
=
c11 c12 c13
c11 =
c12 =
c13 =
Answer:
Step-by-step explanation:
56.1,12.1,23.6
Pls help me!!! ( pls dont answer if you don’t have the answer I will report you ...).
Look at the picture!
A manufacturer wants to design a container with a volume of 800 cubic centimeters. Their old container is shown
Answer:
2.05 cm
Step-by-step explanation:
3.14× (n+3)²×10 = 800
31.4(n+3)²=800
(n+3)²= 800/31.4
(n+3)²= 25.48
n+3 =√25.48
n+3= 5.05
n = 5.05 -3 = 2.05
so, the radius should be increased :
2.05 cm
Due Tommorow
Help Plzzz.........
Which equation is represented by the graph below?
Answer: y= 2x + 4
Step-by-step explanation: I think that’s it
If f(x) = 3x -121, find the sum of values when f(x) = 4.
Write your answers for x as simplified fractions.
I
and x =
The sum of the values when f(x) = 4 is
The required value of the function x is 41.6
What is a function ?This relationship is typically represented as y = f(x), or "f of x," where y and x are coupled such that for each value of x, there is a specific value of y. This means that f(x) can only have one value for a given x. In set theory jargon, a function connects an element x to an element f(x) in another set.
Given : f (x ) = 3x - 121
to find ; value of f ( x ) when f (x) = 4
Since two values of f(x ) are given
we can simply equate these two values
and the answer which we will get is the final answer
thus we get
3x - 121 = 4
3x = 121 + 4
3x = 125
x = 125/ 3
x = 41.6
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Which number is equivalent to 2-5?
-1/32
1/32
-10
-32
Answer:
The only answer option that is at least close enough to be the answer is option A.
How to add fractions with unlike denominators step by step?.
To add fractions with unlike denominators, follow these steps: find a common denominator, convert the fractions to have the common denominator, add the numerators, simplify (if necessary), and convert to a mixed number or decimal if desired.
Adding fractions with unlike denominators requires finding a common base for both fractions. This common denominator ensures that the fractions can be added together. Once the fractions have the same denominator, add the numerators together while keeping the denominator unchanged. Simplify the resulting fraction if possible by dividing both the numerator and denominator by their greatest common divisor. Finally, you can choose to express the fraction as a mixed number (whole number and proper fraction) or a decimal, depending on the preferred form of the result.
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Suppose x and y are related by a constant rate of change and Δ y Δ x = 2 , and y = 4 when x = 3 .
Suppose x and y are related by a constant rate of change and ΔyΔx=2, and y=4 when x=3.
Write a formula that expresses y in terms of x.
The formula that expresses y in terms of x is y = 2x - 2.
If x and y are related by a constant rate of change, we can express their relationship using the formula for a linear function. A linear function has the form:
y = mx + b
where m is the slope (rate of change) and b is the y-intercept.
In this case, we are given that Δy/Δx = 2, which represents the slope of the line. We also know that when x = 3, y = 4.
Using the point-slope form of a linear equation, we can substitute the values into the equation:
y - y1 = m(x - x1)
where (x1, y1) is the given point (3, 4).
Substituting the values, we have:
y - 4 = 2(x - 3)
Now, let's simplify the equation:
y - 4 = 2x - 6
To express y in terms of x, we isolate y by adding 4 to both sides of the equation:
y = 2x - 2
Therefore, the formula that expresses y in terms of x is:
y = 2x - 2
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Which fractions have a least common denominator of 48?
The equivalent Fractions with the LCD
2/3 = 32/481/16 = 3/481/8 = 6/48LCD = 48 so its D. 16
How to solveRewriting input as fractions if necessary:
2/3, 1/16, 1/8
For the denominators (3, 16, 8) the least common multiple (LCM) is 48.
LCM(3, 16, 8)
Therefore, the least common denominator (LCD) is 48.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
2/3 = 2/3 × 16/16 = 32/48
1/16 = 1/16 × 3/3 = 3/48
1/8 = 1/8 × 6/6 = 6/48
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What number is missing in the fractions to have a LCD of 48? 2/3, 1/?, 1/8 A.2 B.6 C.12 D.16
what would be the effect of aa decreasedecrease in u.s. net exports on the aggregate demand curve?
The aggregate demand curve shifts to the left, indicating a decrease in overall demand in the economy.
A decrease in U.S. net exports would result in a decrease in aggregate demand.
This is because net exports are a component of aggregate demand, which is the total amount of goods and services demanded in an economy.
When net exports decrease, it means that fewer goods and services are being exported from the U.S.
This, in turn, means that there is less demand for U.S. goods and services from foreign buyers.
As a result, the aggregate demand curve shifts to the left, indicating a decrease in overall demand in the economy.
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Which equation represents a tangent function with a domain of all Real numbers such that x is not equal to pi over 4 plus pi over 2 times n comma where n is an integer?
The equation representing this function is y = tan(x)
The equation which represents a tangent function with a domain of all real numbers such that x is not equal to pi over 4 plus pi over 2 times n comma where n is an integer is:y = tan(x)The tangent function is one of the six trigonometric functions, which is abbreviated as tan. The inverse of the cotangent function is the tangent function. It is also referred to as the inverse tangent, arctan, or tan^-1.
It is defined by the ratio of the opposite side to the adjacent side of a right triangle. The tangent function is a periodic function with a period of π radians or 180°. Its value alternates between negative and positive infinity over each period.The tangent function is not defined at odd multiples of π/2, that is, (2n+1)π/2 for all integers n. This is because the denominator in the tangent function becomes zero, causing a vertical asymptote.
For example, the values of the tangent function for π/2, 3π/2, 5π/2, etc. are undefined. Therefore, the domain of the tangent function is all real numbers except for odd multiples of π/2. The notation for the domain is (-∞, -π/2) U (-π/2, π/2) U (π/2, 3π/2) U (3π/2, ∞).However, in this case, the domain is all real numbers except π/4 + nπ/2, where n is any integer.
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Hector is deciding how much he should invest each year. The Automatic Method multiplies the average income by 10%, where the
average income is $50,000 for an employee that has been at the same company for 10 years or less and $60,000 for an employee that has
been at the same company for more than 10 years. The Exact Method multiplies the exact income by 7.5%. Suppose Hector has been at the
same company for 12 years and his income last year was $75,000. Find the amount Hector should invest using both methods.
Automatic Method: $?
Exact Method: $?
Answer:
Automatic Method: 6000
Exact Method: 5625
Step-by-step explanation:
I dont have one, sorry.