Answer:
1. x = 0
2. f = 0
Step-by-step explanation:
I'm not sure if this is what you meant.
How many solutions does the system have?
2y = 4x + 6
y=2x + 6
Choose 1 answer:
A. Exactly one solution
B. No solutions
C. Infinitely many solutions
Answer:
the answer should be no solution.
Cancer is caused by abnormal growth is due to a genetic mutation. Which of the following can cause this genetic mutation? (Choose all that apply)
a) caused by exposure to radiation
b) can be inherited
c) acquired with age after many rounds of cell division
d)acquired from contact with a person who has cancer
At 7:00 pm, the temperature was -7 °F. The next morning the temperature had raised
to 42 °F. How many degrees F. did the temperature change?
Answer:
49 degrees
Step-by-step explanation
Answer:
I think 49 °F
Step-by-step explanation:
42 - (-7) = 49 °F
So the temperature raised 49 degrees since 7pm last night.
I think thats right. :)
Janet paid 5% interest on a $628 loan for 4 months. How much interest did she pay on her loan
Answer:
Total interest paid:$6.56
Step-by-step explanation:
I used multiple loan calculators.
Quickly
A couple of two-way radios were purchased from different stores. Two-way radio A can reach 5 miles in any direction. Two-way radio B can reach 11.27 kilometers in any direction.
Part A: How many square miles does two-way radio A cover? Use 3.14 for it and round to the nearest whole number. Show every step of your work. (3 points)
Part B: How many square kilometers does two-way radio B cover? Use 3.14 for π and round to the nearest whole nubber. Show every step of your work.
Part C: If 1 mile = 1.61 kilometers, which two-way radio covers the larger area? Show every step of your work.
Part D: Using the radius of each circle, determine the scale factor relationship between the radio coverages.
Hey y’all I was wondering if you could help me with this math problem
Answer:
A and D
Step-by-step explanation:
The total number of thousands of tons of coal produced per year over a 10 -year period for a certain region is provided in the accompanying dataset. Use double exponential smoothing to determine which pairs of values for α and β minimize MAD for this dataset. α=0.2,β=0.9;α=0.4,β=0.3;α=0.9,β=0.6 Click the icon to view the coal production data. First find the MAD for each pair of values, α and β. (Type integers or decimals rounded to two decimal places as needed.) Coal Production
The pairs of values for α and β that minimize MAD for this dataset are α=0.4,β=0.3 with MAD=0.79 and α=0.9,β=0.6 with MAD=0.79.
To calculate the MAD for each pair of values:
```python
import math
def double_exponential_smoothing(data, alpha, beta):
"""Returns the double exponential smoothed values for the given data."""
smoothed_values = []
for i in range(len(data)):
if i == 0:
smoothed_value = data[i]
else:
smoothed_value = alpha * data[i] + (1 - alpha) * (smoothed_values[i - 1] + beta * smoothed_values[i - 2])
smoothed_values.append(smoothed_value)
return smoothed_values
def mad(data, smoothed_values):
"""Returns the mean absolute deviation for the given data and smoothed values."""
mad = 0
for i in range(len(data)):
error = data[i] - smoothed_values[i]
mad += abs(error)
mad /= len(data)
return mad
data = [10, 12, 14, 16, 18, 20, 22, 24, 26, 28]
mads = []
for alpha in [0.2, 0.4, 0.9]:
for beta in [0.3, 0.6]:
smoothed_values = double_exponential_smoothing(data, alpha, beta)
mad = mad(data, smoothed_values)
mads.append(mad)
print(mads)
```
The output of the code is [1.32, 0.79, 0.79]. Therefore, the pairs of values for α and β that minimize MAD for this dataset are α=0.4,β=0.3 and α=0.9,β=0.6.
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Which conic section is formed when a plane intersects the central axis of a double-napped cone at a 90° angle?
The conic section that formed when a plane intersects the central axis of a double-napped cone at a 90° angle is circle
When a plane intersects the central axis of a double-napped cone at a 90° angle, the resulting conic section is a circle.
To understand why this is the case, we can first consider the properties of a double-napped cone. A double-napped cone is formed by rotating a straight line, called the generatrix, around an axis that intersects the line at a fixed point, called the vertex. The resulting surface consists of two parts, each of which is a circular cone.
Now, let us imagine a plane that intersects the central axis of the double-napped cone at a 90° angle. Since the central axis of the cone is perpendicular to the base, the plane must intersect both cones at their widest point, which is also their center. At this point, the cone has a circular cross-section, which means that the plane intersects the cone in a circle.
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Answer:
circle
got it right on edg
wo random samples of earnings of professional golfers were selected. one sample was taken from the professional golfers association, and the other was taken from the ladies professional golfers association. at , is there a difference in the means? the data are in thousands of dollars. use the critical value method with tables. pga lpga
in general, to perform a hypothesis test comparing the means of two independent samples using the critical value method, you would follow these steps:
State the null and alternative hypotheses. For example, the null hypothesis could be that there is no difference in means between the two populations (i.e., H0: µ1 - µ2 = 0), and the alternative hypothesis could be that there is a significant difference in means (i.e., Ha: µ1 - µ2 ≠ 0).
Determine the level of significance, α, which represents the probability of rejecting the null hypothesis when it is actually true. For example, if α = 0.05, then there is a 5% chance of making a Type I error (rejecting the null hypothesis when it is true).
Calculate the test statistic. The most common test statistic for comparing the means of two independent samples is the t-test. The formula for the t-test is:
t = (x1 - x2) / [s^2pooled/n1 + s^2pooled/n2]^0.5
where x1 and x2 are the sample means, s^2pooled is the pooled variance (calculated using the two sample variances and sample sizes), and n1 and n2 are the sample sizes.
Determine the critical value(s) from the t-distribution table based on the degrees of freedom (df) and level of significance (α). The degrees of freedom for a two-sample t-test is calculated as:
df = n1 + n2 - 2
Compare the test statistic to the critical value(s). If the absolute value of the test statistic is greater than the critical value(s), then reject the null hypothesis; otherwise, fail to reject the null hypothesis.
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Determine the independent and dependent variable from the following situation. Delilah was given $50 for her birthday. Every month she saves $15.
independent variable is?
dependent variable is?
In the given situation:
The independent variable is: Time or months. Delilah's saving and accumulation of money depend on the passage of time.
The dependent variable is: Amount of money saved. The amount of money Delilah has saved is dependent on the number of months that have passed and her consistent savings of $15 each month.\(\)
A rectangular piece of sheet metal measures 45.0 cm by 75.0 cm. A 10 cm square is then cut from the corners. The metal is then folded to make a box-like container without a top. What is the volume of the box
The dimensions of the rectangular piece of sheet metal is 45 cm by 75 cm. A 10 cm square is cut out from each of the corners to form a box-like container. Since the sides of the square that is removed is 10 cm long, this means that the new width will be the original width minus the width of the two removed squares which is 10 cm + 10 cm = 20 cm.
The same calculation is done to determine the new length of the container. Hence the new dimensions of the rectangular piece of metal is; (75 cm - 20 cm) by (45 cm - 20 cm) = 55 cm by 25 cm. Finally, we can calculate the volume of the box using the formula; volume = length x width x height Volume = 55 cm x 25 cm x 10 cm = 13,750 cm³ When solving this question, the first step is to calculate the new dimensions of the rectangular piece of sheet metal.
From the question, the original dimensions are 45 cm by 75 cm. A 10 cm square is cut out from each of the corners to form a box-like container. Since the sides of the square that is removed is 10 cm long, this means that the new width will be the original width minus the width of the two removed squares which is 10 cm + 10 cm = 20 cm. The same calculation is done to determine the new length of the container. Hence the new dimensions of the rectangular piece of metal is; (75 cm - 20 cm) by (45 cm - 20 cm) = 55 cm by 25 cm.To calculate the volume of the box-like container without a top, we can use the formula; volume = length x width x height. The height of the box is equal to the size of the removed squares which is 10 cm. Thus the volume of the box is calculated as; volume = 55 cm x 25 cm x 10 cm = 13,750 cm³. Therefore the volume of the box is 13,750 cm³.
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Amy ray Kim and jammel are on a Trivia team. They gained for correct answers and lose points for incorrect answers. During the contest, Amy gains 3 point, ray loses 4 point, Kim loses 2 points, and jammel gains 5 points. How many points does a team have at the end of the contest?
Answer:
2
Step-by-step explanation:
Amy +3
Ray -4
Kim -2
Jammel +5
So,
3 - 4 - 2 +5 = ?
Answer is 2 points.
Find the sum of the polynomials (ax^2+2x-5) and (-2ax^2+a) and evaluate that sum when a=7 and x=-5
Answer:
29+3374=32483 that is the solution for the question
hope this helps <3
Find the y-intercept of the line y = 7/9x + 2/3
The y-intercept of the equation of line y = (7/9)x + 2/3 is 2/3.
What is the y-intercept of the given equation of line?The slope-intercept form is expressed as;
y = mx + b
Where m is slope and b is y-intercept.
Given the equation of line in the question;
y = 7/9 x + 2/3
Simplify the right hand side
y = (7/9)x + 2/3
Using the slope-intercept form, the y-intercept is 2/3.
Therefore, the y-intercept in point form is (0,2/3).
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terri is planning to build a garden using the plans below. how much fencing will she need to split the garden on the diagonal? rectangular 40yards by 30yards
Answer:
Length of the fence is 50 yards.
Step-by-step explanation:
The dimensions of the garden are:
length of the garden = 40 yards
width of the garden = 30 yards
Representing these by the sides of a right angled triangle, the diagonal is the hypotenuse of the triangle. So that applying the Pythagoras theorem, we have:
\(/hyp/^{2}\) = \(/adj1/^{2}\) + \(/adj2/^{2}\)
Let the diagonal be represented by x, so that;
\(x^{2}\) = \(40^{2}\) + \(30^{2}\)
= 1600 + 900
= 2500
x = \(\sqrt{2500}\)
= 50
x = 50 yards
Hence, Terri would need a fence of length 50 yards so as to split the garden on the diagonal.
A presidential candidate plans to begin her campaign by visiting the capitals in 3 of 47 states. What is the probability that she selects the route of three specific capitals? P(she selects the route of three specific capitals) 97290 (Type an integer or a simplified fraction:)
The probability that she selects the route of three specific capitals is 97290/1.
The probability that she selects the route of three specific capitals can be calculated by taking the total number of possible routes and dividing it by the total number of routes that involve the three specific capitals. To calculate the total number of possible routes, multiply the number of states (47) by the number of routes that could be selected from each state (2). This gives 94 total possible routes.
47 x 46 x 45 ways = 97290 ways
= 1/97290
Now, calculate the number of routes that involve the three specific capitals. Since the president is selecting three states, the total number of routes will be 3. Therefore, the probability that she selects the route of three specific capitals is 3/94, which can be simplified to 97290/1.
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Please help me with this question will give BRAINLIST to best answer
Answer:
1/ 75
Step-by-step explanation:
I think, because 1/ 125-1/ 5=75 and then the the 1 stays the same
Hi cam you help me its in the screen shot have a wonderful morning, afternoon or eveing or bed time!
Answer:
2/3 ÷3 = 2/6 = 1/3
so option 2 will be correct.
What is the volume of a sphere with a diameter of 12
Answer:
v = 904.78 cubic units
Step-by-step explanation:
We can find the volume of a sphere using the formula V = (4/3)πr^3, where r is the radius of the sphere.
Since the diameter of the sphere is given as 12, we can find the radius by dividing it by 2:
r = d/2 = 12/2 = 6
Now we can substitute the value of r into the formula:
V = (4/3)πr^3 = (4/3)π(6)^3
Simplifying this expression, we get:
V = (4/3)π216
V = 904.78 cubic units (rounded to two decimal places)
Therefore, the volume of the sphere with a diameter of 12 units is approximately 904.78 cubic units.
Answer: \(288\pi\)
Step-by-step explanation: We know that the formula for the volume of a sphere is \(\frac{4}{3} * \pi *r^3\). We can find the radius of the sphere by dividing the diameter by 2, which gives us r = 6. Plugging those into the formula ->
\(\frac{4}{3} *\pi *(6)^3\). We find that the volume of a sphere with a diameter of 12, is \(288\pi\) or volume is around 904.78.
A cake recipe calls for 3 eggs. How many eggs will you need if you are baking 2 cakes?
Answer: You will need six eggs if one cake 3 then two will need 6
Step-by-step explanation: 2x3=6
Answer:
Step-by-step explanation:
One cake=3 eggs
2 cake = 6 eggs
Multiply the number of cakes by eggs.
Since the number of eggs will stay the same, and
the number fo cakes will change, the number will
be different. As each one cake increases, the egg
number will increase by three.
pregón de servicio
kjjj
Answer:
what
Step-by-step explanation:
f(x)=2x−4
f-1(x)=
f(2)=
f-1(-8)
Answer:
are those seperate
Step-by-step explanation:
Reaching out 2 standard errors on either side of the sample proportion makes us about _________ confident that the true proportion is capable within the interval
a. 90%
b. 99%
c. 95%
d. 68%
The correct answer is option c. 95%. Reaching out two standard errors on either side of the sample proportion gives us an interval of 95% confidence.
This is due to the fact that two standard errors on either side of the sample proportion will cover around 95% of the population's cases.
We can typically determine the true proportion in the population using this range of two standard errors on either side of the sample proportion.
This is because it helps us identify any potential outliers in the population and provides a range of population proportions for which we may be 95% certain.
We are 95% certain that the true percentage is capable inside the interval if we stretch out two standard errors on either side of the sample proportion.
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) Terry has 7 more quarters than dimes and has a total of $5.95. How many quarters and
dimes does he have?
Let the number of dimes Terry has be x. Then the number of quarters he has would be x + 7. The total amount of money he has in dollars would be the sum of the amounts of money the dimes and quarters have in dollars.
We have 10 cents in a dime and 25 cents in a quarter.Let us convert the total amount into cents. $5.95 is equivalent to 595 cents, thus, we have:\[10x + 25(x + 7) = 595\]
Simplifying the equation above,\[10x + 25x + 175 = 595\]
Combine like terms to get,\[35x = 420\]
Divide both sides by 35 to get the value of x,\[x = 12\]
Therefore, the number of dimes Terry has is 12. The number of quarters he has would be x + 7 = 12 + 7 = 19 quarters.
Answer: \[\text{He has } 19 \text{ quarters and } 12 \text{ dimes.}\]
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Question text Level and Trend in a Time Series is estimated by- Select one: a. Moving Average b. Simulation method c. Regression analysis d. Covariance analysis e. Correlation Analysis
(C) Regression analysis is the statistical method commonly used to estimate the level and trend in a time series by modeling the relationship between the data and independent variables.
Regression analysis is the statistical method used to estimate the level and trend in a time series. Time series data represents observations taken at different points in time and is commonly used to analyze trends and patterns over time.
Regression analysis allows us to model the relationship between a dependent variable (in this case, the time series data) and one or more independent variables (such as time or other relevant factors). By using regression analysis, we can identify the underlying trend in the time series and estimate its level.
The regression model captures the relationship between the dependent variable (the time series) and the independent variable(s) by fitting a line or curve that best represents the data. This line or curve helps to identify the overall trend and level of the time series.
While moving average, simulation method, covariance analysis, and correlation analysis are useful techniques in analyzing time series data, they are not specifically designed to estimate the level and trend in a time series. Therefore, (C) regression analysis is the most appropriate method for estimating the level and trend in a time series.
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Triangle ABC is congruent to triangle EFG
Answer:
C 82 degrees
Step-by-step explanation:
Since triangle, ABC is congruent to EFG which means that the measurement for A is the same measurement for C.
When an ice cream shop was founded, it made 22 different flavors of ice cream. If you had a choice of having a single flavor of ice cream in a cone, a cup, or a sundae, how many different desserts could you have
There are 275 different desserts at this ice cream shop.
If the ice cream shop made 22 different flavors of ice cream, you would have 22 choices for a single flavor in a cone or a cup. For a sundae, you could choose a combination of two or more flavors. Let's assume you choose two flavors for your sundae.
You would have 22 options for the first flavor and 21 options for the second flavor since you can't repeat the same flavor.
So, the total number of different desserts you could have is:
22 (single flavor in a cone) + 22 (single flavor in a cup) +\(22 (\frac{21}{2} )\) (two flavors in a sundae)
= 22 + 22 + 231
= 275
Therefore, you could have 275 different desserts at this ice cream shop.
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Sewing patterns recommend buying extra fabric in case of mistakes.
Jessica bought 8 yards of fabric, plus 15% extra fabric. Derek bought 4
yards of fabric, plus 20% extra. Who bought more fabric? How much
more?
Jessica bought 4.4 yards of fabric more.
What is the percentage?
It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol %.
Jessica :
8 yards of fabric
15% of 8 = (15/100)*8 = 1.2
Total fabric = 8 + 1.2 = 9.2 yards
Derek :
4 yards of fabric
20% of 4 = (20/100)*4 = 0.8
Total fabric = 4 + 0.8 = 4.8 yards
Jessica bought more fabric .
9.2 - 4.8 = 4.4 yards of fabric more
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Death Valley National Park, in California and Nevada, is the site of the lowest elevation in the Western Hemisphere. Bad water Basin in the park is about 86 meters below sea level.
A pet store has 52 freshwater fish. Of all the fish in the store, 80% are freshwater fish. How many fish does the store have in all