Answer:
No.
Step-by-step explanation:
Rational numbers are any of the following:
Integers (positive whole numbers, negative whole numbers, or zero).Fractions e.g. 3/4Terminating (with an end) or repeating decimals e.g. 0.2 or 0.333333... or 0.343434...Irrational numbers are thus defined as:
Non-terminating (unending), non-repeating decimal numbers. e.g. π, surds ( \(\sqrt{2}\) ).This means that -8.7 is not irrational, as it is not an unending, non-repeating number: an easy way to remember how to answer this is to look at whether the number has been expressed in decimal form if it has (unless you have been told that it has been rounded) it must be rational, as it can be written as a decimal number.
8. The temperature in a freezer is -25.8 °C. If the door is left
open, and the temperature increases 36.5 degrees, what will the
temperature in the freezer be?
The temperature after the door of the freezer is left open is 10.7°C.
The degree or intensity of heat present in a substance or object is called temperature.
It is given that the temperature in a freezer is -25.8 °C. The door is left open, and the temperature increases 36.5 degrees.
The final temperature after the door of the freezer is left open is -
{x} = - 25.8 + 36.5
{x} = 10.7°C
Therefore, the final temperature after the door of the freezer is left open is 10.7°C.
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how do I find y and what is the answer
Answer:
y = 25 degrees
Step-by-step explanation:
straight line has 180 degrees
so 180 - 115 = x which is 65 degrees
traingle has 180 also
65 + 90 = 155 180 - 155 = y which is 25 degrees
The triangle on the other side is the equivalent.
Answer:
y = 25°
Step-by-step explanation:
x = 180° - 115° (115° and x are supplementary angles)
x = 65°
In the triangle,
x + y + 90° = 180°
65° + 90° + y = 180°
155° + y = 180°
Subtract 155 from both sides,
y = 180° - 155° = 25°
The accompanying scatterplot shows data on age and GPA for a sample of college students. Comment on the trend of the scatterplot. Is the trend positive, negative, or near zero? Click the icon to view the scatterplot of age and GPA. The graph shows since the points show as age increases. The association between age and GPA is Х Age and GPA 4.0- 3.5 3.0- GPA 2.5 2.0 - 1.5 - 20 24 32 36 28 Age Print Done
Based on the given scatterplot, the trend appears to be a negative association between age and GPA. As age increases, GPA tends to decrease.
In a scatterplot, the trend represents the general pattern or direction of the relationship between two variables. In this case, the variables are age and GPA. The scatterplot shows that as age increases, there is a general tendency for GPA to decrease. This suggests a negative association between the two variables.
There could be several reasons for this negative association. It could be that older students have more responsibilities and less time to devote to their studies, leading to lower GPAs. Alternatively, it could be that older students are more likely to have completed more difficult courses earlier in their college careers, leading to lower GPAs in subsequent courses.
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f(x) = 32
g(x) = 5x + 2
Find
(1) (a). Include any restrictions on the domain.
O A.
---
+2
3.
5.1+
33
A. A
(1) (a) = 5, 2 > 0
B. (1) (z) = 72,2 +0
c. (1) (a) = 1,2+ -
OD (1) (a) = 4+1
--
52
522)
first answer = brainliest
Answer:
-3
The y-intercept is the final number and whether it is a negative or not.
Step-by-step explanation:
If my answer satisfies, please leave a 5 star, and mark brainleist. Thank you!
Answer:
-3 is y intercept
Explanation:
formula: y = mx + bwhere m is the slope and b is the y-intercept
comparing with the formula. we can say that -5 is the slope and -3 is the y intercept.
will the sampling distribution of x always be approximately normally distributed? Explain. Choose the correct answer below 0 ?. Yes, because the Central Limit Theorem states that the sampling distribution of x is always approximately normally distributed O B. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough O C. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the population being sampled is normally distributed O D No, because the Central Limit Theorem states that the sampling d bution of x is approximately no aly distribui d only i the sa le sae is mere than 5% of the population.
B. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough.
The Central Limit Theorem (CLT) is a fundamental concept in statistics that states that as the sample size increases, the sampling distribution of the sample means will approach a normal distribution. However, this is only true if certain conditions are met, one of which is having a large enough sample size.
The CLT states that the sampling distribution of x will be approximately normally distributed if the sample size is large enough (usually greater than 30). If the sample size is small, the sampling distribution may not be normally distributed. In such cases, other statistical techniques like the t-distribution should be used.
Furthermore, the CLT assumes that the population being sampled is not necessarily normally distributed, but it does require that the population has a finite variance. This means that even if the population is not normally distributed, the sampling distribution of x will still be approximately normal if the sample size is large enough.
In conclusion, the answer is B, as the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough.
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Nachelle went to the store to buy some almonds. The price per pound of the almonds is $6.50 per pound and she has a coupon for $4.75 off the final amount. With the coupon, how much would Nachelle have to pay to buy 5 pounds of almonds? Also, write an expression for the cost to buy pp pounds of almonds, assuming at least one pound is purchased.
Step-by-step explanation:
hope this will help you mark me as brinalist friend please
The amount paid for the 5 pound of almond by Nachelle is $27.75.
What is meant by the term equation?In its most basic form, an equation is a numerical declaration that demonstrates that two formulas are equal. 3x + 25 = 14, for example, is an equation whereby a 3x + 25 and 14 are 2 expressions separated by a 'equal' sign.Let 'p' be the number of pounds of almonds purchased by Nachelle.
Let 'c' be the total cost paid.
The cost of per pound of the almonds is $6.50 per pound.
The amount of the coupon is $4.75.
Thus, the equation will be ;
c = 6.50p - 4.75 ......equation.
For number of pounds p = 5.
c = 6.50×5 - 4.75
c = $27.75
Thus, the amount paid for the 5 pound of almond by Nachelle is $27.75.
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An airplane has a bearing of 30°. Find the velocity of the airplane in component form if it is traveling at 625 mph.Select one:a.<625sin60°, 625cos60°>b.<625cos30°, 625sin30°>c.<625cos60°, 625sin60°>d.<625sin30°, 625cos30°>
SOLUTION:
From the diagram, we can see that velocity in component form is;
\(\langle625cos30,625sin30\rangle\)researcher created three groups based on participants BMI: normal weight, overweight and obese. The hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. Which statistical test might the researcher use, assuming a reasonable normal distribution of values?
A repeated measures ANOVA
An independent group t test
One way ANOVA
A chi-squared test
To test the hypothesis of mean differences in artificially sweetened drink consumption among BMI groups, assuming a normal distribution, the researcher might use a one-way ANOVA.
The one-way ANOVA compares the means of three or more independent groups and determines if there are statistically significant differences among them. In this case, the BMI groups (normal weight, overweight, and obese) represent the independent groups, and the number of artificially sweetened drinks consumed is the dependent variable. By conducting a one-way ANOVA, the researcher can assess if there are significant differences in mean consumption among the BMI groups and draw conclusions regarding their hypothesis.
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. Find three consecutive square numbers whose sum is 149.
Answer:
The three consecutive square numbers that added together give 149 are 6, 7 and 8.
Step-by-step explanation:
To determine which are the three square consecutive numbers that added together add up to 149, the following calculation must be performed:
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
Thus, we can see that 36 + 49 + 64 gives the result 149. Therefore, the three consecutive square numbers that added together give 149 are 6, 7 and 8.
please solve this i really need the help
Y-2 = ½(X-3)
Answer:
(If solving for x) X = 2y-1
Step-by-step explanation:
Y-2 = 1/2(x-3)
Distributive property
Y-2 = 1/2x - 1.5
Addition property of equality
Y-0.5=1/2x
Multiplication property
2Y-1=X
Symmetric property
X = 2y-1
How do you translate coordinates?
To translate an entire triangle, find the coordinates of each of the triangle's vertices, add the horizontal translation then plot the three translated points.
Whenever an object is moved from one location to the next without changing its size, shape, or orientation, a translation takes place. If we know which way and how far the figure to be moved, we can draw the translation in the coordinate plane.
Use P′(x+a,y+b) to translate the point P(x,y), a unit to the right, and b unit up. Use P′(x−a,y−b) to translate the point P(x,y), a unit to the left and b unit to the lower.
There are some steps of translating the triangle:
Step 1: Find the coordinates of each of the triangle's vertices in step one.
Step 2: Add the horizontal translation value to each vertex's x-coordinate and the vertical translation value to each point's y-coordinate to translate each point. If the horizontal translation is to the left or the vertical translation is downward for these translations, add a negative number.
Step 3: Plot the three translated points and draw the triangle by drawing a straight line between each pair of points.
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What is the slope of this line?
Give your answer as a fraction in simplest terms.
Answer:
1/4 is the answer for this because the slope is 1 and 4 so this means it is going up at a 1/4 slope.
Answer:
The slope = 1/4
20 POINTS!!!!!
which phrase best describes the expression : 3x + 4y + 1/2z
a. product of three variables
b. value of three coefficients
c. the quotient of three terms
d. the sum of three terms
Use the information in the box to answer the question that follows. Article I, Section 8 of the United States Constitution lists the specific powers granted to Congress. These include the power to coin money, declare war, and establish post offices, among others. It also includes a clause that allows Congress to make any laws “necessary and proper” for carrying out its functions. Which statement best explains how the Tenth Amendment relates to this part of the Constitution? Responses
According to the information from the fragment of the constitution, it can be established that the statement that best relates this issue to the Tenth Amendment is It reserves to the states any powers not granted to the federal government (option C).
What is the fragment about?The fragment focuses on the fact that this section of Article I provides congress with certain rights such as creating new laws, minting a currency, establishing post offices, among others.
What is the Tenth Amendment?The tenth amendment of the states is a part of the bill of rights. In this it was established that the powers that the Constitution does not delegate to the United States or prohibit to the States, are reserved to the States respectively or to the people.
Which sentence best explains the relationship of section 8 of article 1 of the constitution with the Tenth Amendment?The sentence that best explains the relationship of section 8 of Article I of the constitution with the Tenth Amendment is "It reserves to the states any powers not granted to the federal government" (option C).
Note: This question is incomplete because there is some information missing. Here is the complete information:
A It expands the list of specific powers granted to Congress.
B It allows the states to have the same powers granted to Congress.
C It reserves to the states any powers not granted to the federal government.
D It applies the "necessary and proper" clause to other branches of government.
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11x-2=25 degrees solve for x
Answer:
2.45
Step-by-step explanation:
11x-2=25
11x=25+2
11x=27
11x/11=27/11
x= 2.45.
To check:
11x-2=25
11 × 2.45 - 2 = 24.95.
Round 24.95 to nearest whole number and you will get 25.
Find the area of hexagon DEFGHI.
Step-by-step explanation:
Break it up into two trapezoids as shown
area = trap1 + trap2
= 2 * (7+3) / 2 + 3 * ( 7 + 3) / 2 = 10 + 15 = 25 units^2
What is the value of 14 – ( 2) + 3 – 8 + 4?
Answer:
11
Step-by-step explanation:
12-5+4=12-1=11
On his federal income tax return, Benito Silva, a single taxpayer, reported income from wages, $27,820; tips, $5,495; and interest earned, $1,466. Benito had these adjustments to income: payments to a retirement plan, $2,000; penalty for early withdrawal of savings, $19. His employer withheld $3,985 from his pay for federal income tax. Benito claims the standard deduction of $5,450 and an exemption of $3,500. Find Benito's adjusted gross income .
Answer: 50,735
Step-by-step explanation:
a post-mix beverage machine is adjusted to release a certain amount of syrup into a chamber where it is mixed with carbonated water. a random sample of 20 beverages were found to have a mean syrup content of 1.15 fluid ounces and a standard deviation of 0.025 fluid ounces. find a 90% confidence interval for the mean amount of syrup mixed with each drink.
The 90% confidence interval for the mean amount of syrup mixed with each drink is (1.10, 1.20) fluid ounces.
The 90% confidence interval for the mean amount of syrup mixed with each drink is calculated using the sample mean, sample standard deviation and the t-distribution. The lower bound of the confidence interval is calculated by subtracting the t-statistic multiplied by the standard error of the mean from the sample mean. The upper bound is calculated by adding the t-statistic multiplied by the standard error of the mean to the sample mean. The t-statistic is determined using the degrees of freedom, which is equal to the sample size minus 1. In this case, the confidence interval is (1.10, 1.20) fluid ounces. This means that we are 90% confident that the true mean amount of syrup mixed with each drink is between 1.10 and 1.20 fluid ounces.
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Find the value of x.
Answer:
Step-by-step explanation:
The line which 3x represents is twice as big as the 48. That's because both sides other than the base are bisected.
3x = 2 * 48
3x = 96 Divide by 3
3x/3 = 96/3 Combine
x = 32
If an object has a mass of 450 kg and is moving at 15 m/s, What is that object's momentum?
\(p=mv=450\mathrm{kg}\cdot15\mathrm{\frac{m}{s}}=6750\mathrm{\frac{kgm}{s}}\).
Hope this helps.
A farmer has a 100 ft by 200 ft rectangular field that he wants to increase by 15.5% by cultivating a strip of uniform width around the current field. How wide of a strip should he cultivate around the edge of his field to do this? The strip around the outside is _ feet wide
Answer:
(a) The strip should be 5ft wide
(b) The strip around the outside field is 10ft wide.
Step-by-step explanation:
Given:
Length of the rectangular field, L= 200 ft
width of the rectangular field, w = 100 ft
Area of the rectangular field, A = 200ft x 100ft = 20000 ft^2
let the width of the strip = x
The strip around the outside field = 2x
If the field is increased by 15.5%
New area of the field = 1.155 x 20000 = 23,100 ft^2
The increase in area of the field = 3,100 ft
3,100 = New area of field - old area of the field
3100 = (200 + 2x)(100 + 2x) - 20000
3100 = 20000 + 400x 200x + 4x^2 - 20000
3100 = 600x + 4x^2
Divide through by 4
775 = 150x + x^2
x^2 + 150x - 775 = 0
Factorize
(x + 155)(x-5) = 0
x = 5 ft
The strip should be 5ft wide.
The strip around the outside field = 2 x 5 ft = 10 ft
Thus, the strip around the outside field is 10ft wide.
help me please!!!!!!!
Answer:
C (-6,-8) → C' (6,8)
D (-2,-8) → D' (2,8)
E (-2,-4) → E' (2,4)
F (-6,-4) → F' (6,4)
Step-by-step explanation:
When you rotate a point 180° counterclockwise about the origin, the point A (x,y) becomes A' (-x,-y). So, if the points are positive, they will become negative.
Because all the points are negative, rotating them 180° counterclockwise will make them positive.
Hope that helps.
What is the area of the figure?
Answer:
80 square feet
Step-by-step explanation:
You can split it into a rectangle and a triangle. The area of the rectangle would be 2 * 16 = 32 square feet.
Next, you need to find the height of the triangle. To do this, you can split the triangle into two right triangles and use the pythagorean theorem to find the height. The dimensions of one of the right triangle is 8 for one of the legs and 10 for the hypotenuse. Using the pythagorean theorem, 8^2 + b^2 = 10^2, which is 64 + b^2 = 100, so b^2 = 36 and b = 6. This means that the height is 6. Now, you find the area of the triangle and you get 16 * 6 / 2 = 48.
Adding the area of the rectangle and the triangle: 32 + 48 = 80
Not sure why that's not an answer choice, I'm fairly confident it's right.
Will make brainiest if 2 people answer :3
Answer:
1.6
Step-by-step explanation:
12.8/8 = 1.6
15.2/9.5 = 1.6
Scale factor = 1.6
Can someone help me solve? Simplify each expression show work
the goal is to test to determine if there is a significant difference between mean value added by the manufacturer and the mean cost of materials in manufacturing assuming a 1% level of significance. use excel to perform the f-test for equality of variances at the 1% significance level. which variable will be group 1? what can you conclude from running the f-test?
If the resulting F-statistic is less than the critical value, we fail to reject the null hypothesis and conclude that there is not enough evidence to suggest that the variances are significantly different.
The F-test is a statistical test used to compare the variances of two groups.
In this problem, we will use it to compare the variance of the value added by the manufacturer and the variance of the cost of materials in manufacturing. The F-test is performed by dividing the larger variance by the smaller variance. The resulting F-statistic is then compared to the critical value of an F-distribution with degrees of freedom equal to the sample size minus one for each group.
Before we can perform the F-test, we need to determine which variable will be group 1. Typically, the variable with the smaller mean is designated as group 1. This is because we want to minimize the chance of making a type II error, which is failing to reject the null hypothesis when it is false. If we designated the variable with the larger mean as group 1, we might not detect a significant difference between the groups, even if one exists.
Once we have designated which variable will be group 1, we can perform the F-test. If the resulting F-statistic is greater than the critical value of the F-distribution, we reject the null hypothesis and conclude that the variances are significantly different.
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9. A random variable X is distributed according to X~ N(= 25,0² =9) (a) Determine such M so that P(X < M) = 0.95. (b) Determine the median.
The standard normal distribution has a mean of 0 and a standard deviation of 1. M ≈ 30.935. The median of the distribution is also 25.
(a) To find M, we first need to convert the given values of mean and standard deviation to the standard normal distribution. This can be done by using the formula Z = (X - μ) / σ, where Z is the Z-score, X is the value of interest, μ is the mean, and σ is the standard deviation. In this case, we have X ~ N(25, 9). Substituting the values into the formula, we get Z = (X - 25) / 3. Now we need to find the Z-score that corresponds to the desired probability of 0.95. Using a standard normal distribution table or a calculator, we find that the Z-score corresponding to a cumulative probability of 0.95 is approximately 1.645. Setting Z equal to 1.645, we can solve for X: (X - 25) / 3 = 1.645. Solving for X, we get X ≈ 30.935. Therefore, M ≈ 30.935.
(b) The median is the value that divides the distribution into two equal halves. In a normal distribution, the median is equal to the mean. In this case, the mean is given as 25. Therefore, the median of the distribution is also 25.
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will give brainlist
Answer:
second answer
Step-by-step explanation:
yards is commonly used for large sparse area measurements