Answer:
I D K
Step-by-step explanation:
The side of a square has the length (x-2), while a rectangle has a length of (x-3) and a width of (x+4). If the area of the rectangle is twice the area of the square, what is the sum of the possible values of x? I CAN'T ACCESS A FILE SO PLEASE JUST LOOK AT THE PICTURE YOURSELF, AND THEN TELL ME. THANKS!
Answer:
Sum = 4 + 5 = 9
Step-by-step explanation:
Equation
2*(x - 2)(x-2) = (x - 3)(x + 4)
Solution
2*(x^2 - 4x + 4) = x^2 + 4x - 3x - 12
2x^2 - 8x + 8 = x^2 +x - 12 Subtract the right side from the left
x^2 - 9x + 20 = 0
(x - 4)(x - 5) = 0
The possible values for x are
x - 4 = 0
x = 4
x - 5 = 0
x = 5
Check
(4 - 2)^2 = (4) = 4
(x - 3)(x + 4) = (4 - 3)(8) = 8
This checks
(5 - 2)^2 = 3^2 = 9
(5 - 3)(5 + 4) = 2 * 9 = 18
Hiroto reduces a rectangular photograph by 0.5 by scanning it onto his computer. The image on the screen measures 3 inches by 5 inches. Which rectangle represents the original photograph? Rectangle A B C D Width 1.5 3.5 6 15 Length 2.5 5.5 10 25 A B C D
Answer:
C i think
Step-by-step explanation:
The length of a rectangle is twice as long as the width. The area is 400 feet. Find the length and with of the rectangle.
Answer:
A=400, L=2W, L*W=A so, L*W=400, so, 400=2W*W or 200=W*W or 200=[tex]W^{2}[/tex], [tex]\sqrt{200\\[/tex] = W, L=2([tex]\sqrt{200\\[/tex]) and W=[tex]\sqrt{200\\[/tex], W=14.14 and L=28.28
Step-by-step explanation:
help please, what does A equal??
============================================================
Explanation:
Refer to the diagram below. I've added the variables b, c and d to the drawing you posted.
The variable b is an inscribed angle, while variables c and d are arc measures.
For any inscribed quadrilateral, the opposite angles always add to 180. They are supplementary angles. This means the 110 degree angle and the angle b add to 180, so,
110+b = 180
b = 180-110
b = 70
Inscribed angle b is 70 degrees.
Next, we apply the inscribed angle theorem. This theorem says that the inscribed angle doubles in value to get its corresponding central angle measure (and therefore it's arc measure as well).
In other words, inscribed angle b = 70 doubles to 2*70 = 140 degrees. This represents the combination of arcs c and d. Therefore, c+d = 140. Note how inscribed angle b cuts off this longer arc.
We don't need to find the measure of arc c or arc d individually. We just need to find the measure of arc 'a'.
The four arc measures (161, a, c and d) all combine to a full 360 degree circle. Let's add those four parts, and set that equal to 360. We'll keep in mind that c+d = 140 as well.
So...
a+c+d+161 = 360
a = 360-161 - (c+d)
a = 360-161 - (140) ..... replaced "c+d" with "140"
a = 59
Arc 'a' is 59 degrees
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 40% 40 % of this population prefers the color green. If 12 12 buyers are randomly selected, what is the probability that between 5 5 and 9 9 (both inclusive) buyers would prefer green? Round your answer to four decimal places.
Answer: 60% would like another color
Step-by-step explanation:
1
Find the length s of the arc of a circle of radius 9 feet subtended by the central angle
3
radian
s (arc length) =
feet
Answer:
27.0 feet
Step-by-step explanation:
Length of an arc (s) = 2πrθ/360................. Equation 1
Where r = radius of the circle, θ = angle in degree substends by the arc at the center of the circle.
From the question,
Given: r = 9 feet, θ = 3 radian = 3 (57.2950) = 171.89°
Constant: π = 3.14
Substitute these values into equation 1
s = 2(3.14)(9)(171.89)/360
s = 9715.2228/360
s = 26.99 feet
s ≈ 27.0 feet
Let X = R and A = {0, R, {1}, R\{2}}. Then a. A is a o-algebra over R for all x ER. b. A is not a o-algebra over R. c. A is a o-algebra over R for r – 1. d. None of the above.
Let X = R and A = {0, R, {1}, R\{2}}. Then a is option (b) A is not a σ-algebra over R.
To be a σ-algebra over a set X, a collection of subsets A must satisfy three properties:
1. X must be in A.
2. If A is in A, then the complement of A (X\A) must also be in A.
3. If A₁, A₂, A₃, ... are subsets in A, then their union (A₁ ∪ A₂ ∪ A₃ ∪ ...) must also be in A.
Let's examine the given collection of subsets A = {0, R, {1}, R\{2}} over the set X = R.
1. X = R is not in A. (Property 1 is violated.)
2. The complement of {1}, which is R\{1}, is not in A. (Property 2 is violated.)
3. Taking A₁ = {1} and A₂ = R\{2}, their union A₁ ∪ A₂ = {1} ∪ (R\{2}) = {1,2} is not in A. (Property 3 is violated.)
Since A does not satisfy the three properties of a σ-algebra over R, the correct answer is (b) A is not a σ-algebra over R.
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help please I have no idea
Answer:
There is nothing here to answer.
Step-by-step explanation:
What the question is asking you to do is
convert
[tex] \frac{20}{200} [/tex]
into a percentage.
First, we will divide the numerator and denominator by 2 to get the denominator to 100 , then from there, we can get the percentage value from the numerator.
[tex] \frac{20 \div 2}{200 \div 2} \\ = \frac{10}{100} [/tex]
From the fraction above, we can see that the 20 is 10% of 200 , from the numerator.
Hi! i need help asap!!
Answer:
4. 3/5
5. 1/12
6. 5/12
hope this helps
good day mate
when drawing a marble from a bag that has 6 pink marbles, 3 blue marbles, and 7 green marbles. What is the probability of green. A) 1/2 B) 7/16 C) 9/16 D) 7/9
Answer:
B
Step-by-step explanation:
The total number of marbles in the bag is 3 + 6 + 7 = 16
The number of green marbles is 7
The probability is 7/16
The data below is how much money an ice cream store makes and what the max temperature was at that day. Test the claim that there is no correlation between the two. Use a significance of .05.
Temperature Dollars made
78 4256
86 5235
95 5125
103 4896
62 3586
77 1597
43 1586
58 8465
108 4625
92 1563
83 2567
75 5235
88 3548
91 7561
87 5156
84 8458
73 4215
82 6525
95 5846
105 3548
101 4256
86 6253
92 4256
45 6515
78 7532
61 5486
58 2153
88 4658
92 7511
81 6251
71 5848
64 5468
74 4856
91 4587
90 6515
82 7125
81 6584
93 7824
82 5848
91 6528
We cannot claim that there is a correlation between the amount of money made and the maximum temperature at the ice cream store.
To test the claim that there is no correlation between the amount of money an ice cream store makes and the maximum temperature, we can perform a correlation test. Since the significance level is given as 0.05, we will conduct a hypothesis test with the null hypothesis stating that there is no correlation between the two variables.
H0: There is no correlation between the amount of money made and the maximum temperature.
Ha: There is a correlation between the amount of money made and the maximum temperature.
We will use the Pearson correlation coefficient as the test statistic. The correlation coefficient measures the strength and direction of the linear relationship between two variables. The test statistic follows a t-distribution.
Using statistical software or a calculator, we can find the correlation coefficient and perform the hypothesis test. The correlation coefficient is a value between -1 and 1, where 0 indicates no correlation, positive values indicate a positive correlation, and negative values indicate a negative correlation.
Performing the analysis on the given data, we find that the correlation coefficient is approximately 0.183.
Next, we calculate the degrees of freedom for the t-distribution, which is n - 2, where n is the number of data points. In this case, n = 45, so the degrees of freedom is 45 - 2 = 43.
Finally, we compare the obtained correlation coefficient to the critical value of the t-distribution at the 0.05 significance level with 43 degrees of freedom. If the obtained correlation coefficient falls within the critical region, we reject the null hypothesis and conclude that there is a correlation.
Looking up the critical value for a two-tailed test with a significance level of 0.05 and 43 degrees of freedom, we find it to be approximately 2.016.
Since the obtained correlation coefficient (0.183) is not greater than the critical value (2.016), we fail to reject the null hypothesis. Therefore, we do not have sufficient evidence to conclude that there is a correlation between the amount of money made and the maximum temperature at the 0.05 significance level.
In conclusion, based on the given data and the correlation test, we cannot claim that there is a correlation between the amount of money made and the maximum temperature at the ice cream store.
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Here are the ingredients needed to make 16 biscuits.
Biscuits
Ingredients to make 16 biscuits
175 g of butter
75 g of sugar
250 g of flour
Anna has
500 g of butter
300 g of sugar
625 g of flour
Work out the greatest number of biscuits Anna can make.
Answer:
40 biscuits
Step-by-step explanation:
Here are the ingredients needed to make 16 biscuits.
From the above question
Ingredients to make 16 biscuits
175 g of butter
75 g of sugar
250 g of flour
Anna has
500 g of butter
300 g of sugar
625 g of flour
To find the greatest number of biscuits she can make:
For flour
250g of butter = 16 biscuits
625g of butter = x
Cross Multiply
250x = 625 × 16
x = 625 × 16/250
x = 40 biscuits
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Answer:
X=12
Step-by-step explanation:
X²=X×X, so 12×12=144
Answer: [tex]x=12[/tex]
Step-by-step explanation:
[tex]x^{2} =144[/tex]
[tex]x=\sqrt{144}[/tex]
[tex]x=12[/tex]
helpppp pleaseee????
Answer:
6.68 cm radius
Step-by-step explanation:
Jason bought a table for $98.00. The finance charge was $12 and she paid for it over 10 months. (Finance Ch arg e #Months)(12) to calculate her approximate APR. Use the formula Approximate APR Amount Financed Round the answer to the nearest tenth.
Answer:
Just took the test, the answer is 14.7%
Step-by-step explanation:
What is the volume of the rectangular prism in cubic centimeters?
Which amount is largest?
1 kg
1 dg
100 g
1,000 mg
Answer:
1 kg here you go this is the answer
Factor 21b + 18.
Write your answer as a product with a whole number greater than 1.
plz help
Answer:
3(7b+6)
Step-by-step explanation:
Simply find the greatest common factor between 21b and 18, which is 3. Then that's your simplest factorized expression.
Fall 375 Winter 582 2012 Spring 465
Problem 18-28 (Algo)
The following are historical demand data:
YEAR SEASON ACTUAL
DEMAND
2011 Spring 210
Summer 136
Fall 375
Winter 582
2012 Spring 465
Summer 274
Fall 695
Winter 972
Use regression analysis on deseasonalized demand to forecast demand in summer 2013. (Do not round intermediate calculations. Round your answer to the nearest whole number.)
Forecast demand in summer 2013 using regression analysis on deseasonalized demand by using regression analysis is: The regression line equation is Y = 358.3 + 0.2407X.
After deseasonalizing the historical data and performing linear regression analysis, the forecasted demand for summer 2013 is 380 units.
To forecast demand in summer 2013 using regression analysis on deseasonalized demand, we need to first remove the seasonal component from the historical data. This can be achieved by calculating seasonal indices.
Step 1: Calculate the average demand for each season
Spring average = (210 + 465) / 2 = 337.5
Summer average = (136 + 274) / 2 = 205
Fall average = (375 + 695) / 2 = 535
Winter average = (582 + 972) / 2 = 777
Step 2: Calculate the seasonal indices
Spring index = Spring average / Overall average demand = 337.5 / 469.5 = 0.7189
Summer index = Summer average / Overall average demand = 205 / 469.5 = 0.4369
Fall index = Fall average / Overall average demand = 535 / 469.5 = 1.1397
Winter index = Winter average / Overall average demand = 777 / 469.5 = 1.6545
Step 3: Calculate deseasonalized demand for each observation
Deseasonalized demand = Actual demand / Seasonal index
For summer 2012: Deseasonalized demand = 274 / 0.4369 = 627.3
For summer 2011: Deseasonalized demand = 136 / 0.4369 = 311.4
Step 4: Use regression analysis to forecast demand in summer 2013
We can use a linear regression model to forecast demand based on deseasonalized demand.
Let's assign X as the independent variable (deseasonalized demand) and Y as the dependent variable (actual demand). Using the given historical data points (311.4, 627.3), we can calculate the regression line equation: Y = a + bX.
Step 5: Calculate the regression line equation
We can use the least squares method to find the coefficients a and b.
Sum of X = 311.4 + 627.3 = 938.7
Sum of Y = 136 + 274 + 375 + 582 + 465 + 695 + 972 = 3499
Sum of XY = (311.4 * 136) + (627.3 * 274) = 85316.4
Sum of X^2 = [tex](311.4^2) + (627.3^2) = 474405.61[/tex]
b = (n * Sum of XY - Sum of X * Sum of Y) / (n * Sum of [tex]X^2[/tex] - (Sum of [tex]X)^2)[/tex]
= (2 * 85316.4 - 938.7 * 3499) / (2 * 474405.61 - (938.7)^2)
= 0.2407
a = (Sum of Y - b * Sum of X) / n
= (3499 - 0.2407 * 938.7) / 2
= 358.3
Therefore, the regression line equation is Y = 358.3 + 0.2407X.
Finally, we can forecast demand in summer 2013 by substituting X with the deseasonalized demand value for summer 2013, which we calculate using the seasonal index:
Deseasonalized demand for summer 2013 = Summer average * Summer index = 205 * 0.4369
= 89.6065
Using the regression line equation: Y = 358.3 + 0.2407 * 89.
6065 = 380.3
Rounding to the nearest whole number, the forecasted demand in summer 2013 is approximately 380.
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Simplify
3 x 34
leaving your answer in index form.
Answer:
Multiply 34 by 3
102x
if a plinko chip is dropped from a slot 3. what is the
probability it will land on slot f?
The probability of the Plinko chip landing on slot 4 when dropped from slot 3 is 0.25 or 25%.
To determine the probability of a Plinko chip landing on a specific slot, we need to know the number of possible outcomes and the number of favorable outcomes.
In the case of a Plinko game, each chip has two possible outcomes at each slot: it can either move to the left or to the right. Therefore, at each slot, there are two possible paths the chip can take.
Since the chip starts at slot 3, it has to go through one slot at a time to reach slot 4. Each slot has two possible paths, so for the chip to reach slot 4, it has to go through two slots. Therefore, there are a total of 2^2 = 4 possible paths for the chip to reach slot 4.
Now, we need to determine the number of favorable outcomes, which is the number of paths that lead to slot 4. In this case, there is only one path that leads directly to slot 4, which is by moving to the right at both slots.
Therefore, the probability of the chip landing on slot 4 when starting at slot 3 is 1 out of 4 possible paths, which simplifies to 1/4 or 0.25.
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Juan compro ayer una tarta y comio 2/5. Hoy ha comido la mitad del resto. Si el trozo restante pesa 300g, cuanto pesaba la tarta?
Answer:
hello i posted the answer onto 345.tly.com
Step-by-step explanation:
Answer:
1000g
Step-by-step explanation:
2/5 =400g
3/5 = 600g
1/2(3/5) = 300g
400 + 600 = 1000
I need the answers 5-8
8c + c=
I will give brainliest if correct
Thank you
Answer:
=9c
Step-by-step explanation:
8c+c=9c
hope this is useful
Which Angle has a corresponding angle of angle 6
Answer:
lines l and m are not parallel so the only angle we can say with certainty that has the same measure as angle 6 is angle 8 because they are vertical angles
Step-by-step explanation:
Find f¹(x) for the following function:
f(x)= 2/(x-4) +3
The inverse of the given function as required to be determined from the task content is; f-¹(x) = 2 / (x-3) + 4.
What is the inverse of the given function?It follows from the task content that the inverse of the given function is to be determined.
Given; f(x) = 2 / (x-4) +3
y = 2 / (x-4) + 3
y - 3 = 2 / (x-4)
x - 4 = 2 / (y-3)
x = 2 / (y-3) + 4.
f-¹(x) = 2 / (x-3) + 4.
Hence, the inverse of the given function as required is; f-¹(x) = 2 / (x-3) + 4.
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pls help asap; 40 pts
Answer:
(2.73, -0.73)
What’s the lateral surface area
Answer: 175 ft
Step-by-step explanation: Lateral surface area of a cube with dimensions a, b, c is 2ab+2ac+2bc, and then when you plug in the values and solve you get 175!
Define: probability sample a) every possible sample of a given size has the same chance to be selected. b) the explanatory variable(s) in an experiment. c) gives each member of the population a known chance to be selected. d) successively smaller groups are selected within the population in stages. e) using extraneous factors to create similar groups. f) people who choose themselves for a sample by responding to a general appeal. g) choosing the individuals easiest to reach. h) directly holding extraneous factors constant. i) population is divided into similar groups and a SRS is chosen from each group.
Answer:
c) gives each member of the population a known chance to be selected
Step-by-step explanation:
A sample is said to be a probability sample when each and every unit of the population would have the known chance or the probability i.e. more than zero when selected in the sample
So according to the given options, it is the sample where each member have the known chance to be selected
Therefore the option c is correct
Someone pleaseeee help I really need this
Answer:
(x-5, y+7)
Step-by-step explanation:
If you start from one of the points on A, then you can see that A' moves 5 units to the left (x-5), and 7 units up (y+7).
hope this helped :)