Step-by-step explanation:
these are the answers. ignore the scribbles :)
What are some basic psychological responses a person could have to the color red?
Answer:
It depends on the person mental state or past. But red often gives the person a sense of danger or fear
Step-by-step explanation:
HELP MEE ILL GIVE BRAINLIEST!!
Answer:
16 by 8
Step-by-step explanation:
A theater has 384 seats. Each row has 16 seats. The area model represents this situation.
Area model showing 2 areas. The first is16 high and 20 wide, with a total of 320. The second is 16 high and x wide, with a total of 64.
Part A
What is the value of x in the area model? Enter your answer in the box.
x =
The value of x in the area model is 4. This means that the second area in the model is 16 high and 4 wide, with a total of 64. In the given area model, the first area represents 20 seats wide and 16 seats high, which gives a total of 320 seats.
This area corresponds to the first 20 seats in each row. Since each row has 16 seats, the theater has a total of 20 rows. The second area in the model represents x seats wide and 16 seats high, with a total of 64 seats. Since the total number of seats in the theater is 384, we can subtract the first area (320 seats) from the total to find the number of seats in the second area.
384 - 320 = 64
Since the second area has a total of 64 seats and is 16 seats high, we can divide the total by the height to find the width:
64 ÷ 16 = 4
Therefore, the value of x in the area model is 4, indicating that the second area is 16 seats high and 4 seats wide, with a total of 64 seats.
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Simplify (5.1)(5.12)4.
(5.1)6
(5.1)7
(5.1)8
(5.1)9
The simplified expression of (5.1)(5.1^2)^4 is (5.1)^9
How to simplify the expression?The expression is given as:
(5.1)(5.12)4
Rewrite the expression properly as follows:
(5.1)(5.1^2)^4
Rewrite the expression properly as follows:
(5.1)(5.1^2)^4 = (5.1) * (5.1^2)^4
Apply the power law of indices
(5.1)(5.1^2)^4 = (5.1) * (5.1^8)
Apply the power law of indices
(5.1)(5.1^2)^4 = (5.1)^(1 + 8)
Evaluate the sum
(5.1)(5.1^2)^4 = (5.1)^9
Hence, the simplified expression of (5.1)(5.1^2)^4 is (5.1)^9
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Select two correct comparisons.
0.057 < 0.008
0.057<0.570
0.57 >1.001
0.057 < 0.049
HELP PLEASE!!!!!!!!
14 points!
Answer: Hello user! I believe this was the question you were asking: Select the two correct comparisons. 0.057 < 0.008(A) 0.057 < 0.57(B) 0.57 = 0.570(C) 0.57 > 1.001(D) 0.057 < 0.049(E) In this case B and C are the two correct options.
Step-by-step explanation: Consider marking this answer as brainliest if it helped you out.
Samantha plays on the softball team for her school she strikes out twice after nine times she is at bat if she struck out 14 times this season how many times has she got back
Answer:
she got back 63 times
Step-by-step explanation:
Here, we want to know the number of times she is at bat
from the question, we are made to know that she strikes out twice after 9 times
So striking out 14 times, the number of times she has got back will be ;
14/2 * 9 = 63 times
What is the probability that a hand of 5 cards chosen randomly and without replacement from a standard deck of 52 cards (which has 4 kings and 4 queens) contains the king of spades, exactly 1 other king, and exactly 2 queens
Answer: Approximately 0.0003047
As a fraction, it is equal to exactly 792/(2,598,960)
===========================================================
Explanation:
The king of spades must be in the hand, and we can pick any other king. There are 3 ways to pick the other king. Then there are 4 C 2 = 6 ways to pick the two queens. The 4C2 refers to the nCr notation. Or you could use Pascal's Triangle.
Overall, there are 3*6 = 18 ways to pick the king of spades, another king, and exactly 2 queens.
Then we have one more card to pick that isn't a king nor a queen. There are 4+4 = 8 cards that are either a king or queen, leaving 52-8 = 44 cards that are neither.
So there are 18*44 = 792 ways to pick a king of spades, another king, exactly 2 queens, and some other card that isn't a king nor queen.
This is out of 52C5 = 2,598,960 possible five card hands.
The probability we're after is roughly 792/(2,598,960) = 0.0003047
Side note: order does not matter with card hands.
calculate sum of squares for each predictor in multiple regression
The sum of squares for each predictor provides a measure of the amount of variance in the dependent variable that can be attributed to that predictor, after accounting for the other predictors in the model.
In multiple regression, the sum of squares for each predictor can be calculated using the following steps:
Calculate the total sum of squares (SST), which is the sum of the squared deviations of each observed value from the mean of the dependent variable.
Fit the multiple regression model and calculate the residual sum of squares (SSR), which is the sum of the squared differences between the predicted values and the actual values of the dependent variable.
Calculate the sum of squares for each predictor by regressing the predictor variable against the residuals obtained in step 2. This is known as the partial sum of squares (PSS) or the sum of squares due to regression (SSRi) for each predictor i.
Calculate the error sum of squares (SSE) as the sum of the squared differences between the actual values and the predicted values of the dependent variable, using the fitted model.
Calculate the sum of squares due to the model (SSM) as the difference between the total sum of squares (SST) and the error sum of squares (SSE).
The sum of squares for each predictor can then be obtained as the ratio of the partial sum of squares for that predictor (PSSi) and the sum of squares due to the model (SSM), multiplied by 100 to obtain the percentage contribution of each predictor to the total sum of squares.
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The grades on a chemistry exam have an approximately normal distribution with a mean of 78 and a standard deviation of 5. Willa scores a 74. 8 on the exam. What proportion of the students scored higher than her on the exam?.
The proportion of students who scored higher than Willa is 0.7389. Hence, Option B is correct.
The given information is:
Mean (μ) = 78, Standard deviation (σ) = 5, and Willa scores = 74.8
The formula for the Z-score is:
Z = (x-μ) / σ
Where, x is the value, μ is the mean and σ is the standard deviation.
Substitute the values in the above formula, we get:
Z = (74.8 - 78) / 5
= -0.64
The negative sign indicates that Willa's score is less than the mean score.
Now, find the proportion of students who scored higher than Willa.
It can be done in two steps as shown below:
Step 1: Find the area under the standard normal distribution curve corresponding to the calculated Z-score.
The Z-table gives the area to the left of Z = -0.64.
The area to the right of Z is 1 - area to the left of Z.= 1 - 0.2611
= 0.7389
Therefore, the proportion of students who scored higher than Willa is 0.7389.
Hence, Option B is correct.
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anna has 2 dozen Rollo bars and 1 dozen apples as treats for halloween. in how many ways can anna hand out 1 treat to each of 36 children who come to her door?
There are approximately 3.72 x 10⁴¹ ways that Anna can hand out 1 treat to each of the 36 children who come to her door.
Anna has 2 dozen Rollo bars, which is equivalent to 2 x 12 = 24 Rollo bars.
She also has 1 dozen apples, which is equivalent to 1 x 12 = 12 apples.
So, Anna has a total of 24 + 12 = 36 treats to hand out.
Now, she needs to hand out 1 treat to each of the 36 children who come to her door.
This can be thought of as selecting 1 treat from the total of 36 treats for each child, without replacement, as each child can only receive 1 treat.
The number of ways to do this is given by the concept of permutations, denoted by "nPr", which is calculated as;
nPr = n! / (n - r)!
where n is the total number of items (treats) to choose from, and r is the number of items (treats) to choose.
In this case, n = 36 (total number of treats) and r = 36 (number of children).
Plugging in the values, we get;
36P36 = 36! / (36 - 36)! = 36! / 0! = 36!
Since 0! (0 factorial) is equal to 1, we can simplify further:
36! / 1 = 36!
36! ≈ 3.72 x 10⁴¹
So, there are 3.72 x 10⁴¹ ways that Anna can hand out 1 treat to each of the 36 children who come to her door.
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Solve for x, using a
tangent and a secant line.
145°
35°
x = [?]°
Check the picture below.
Suppose that a system of seven equations with thirteen unknowns corresponds to a matrix in row echelon form. what is the largest possible number of pivots for this matrix?
For a system of seven equations with thirteen unknowns corresponds to a matrix in row echelon form. The largest possible number of pivots for this matrix is 7.
What is row echelon form and pivots?Using a technique known as Gaussian elimination, any matrix can be converted to reduced row echelon form. This is especially useful for solving linear equation systems.
If a matrix has the following properties, it is in Row Echelon form:
The bottom of the matrix contains any row that is entirely made up of zeros.The first non-zero entry in each row which does not encompass entirely zeros is 1. (called a leading 1).The leading 1 in the higher row is even further left than the leading 1 in the lower row for two consecutive (non-zero) rows.Pivoting is the process of transferring the first matrix to the second matrix utilizing row operations similar to equations.
The matrix "A" has three columns. As a result, there can only be three pivots, implying that at least one row of "A" in echelon type must be zero.
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Four friends are going to the movies. The cost of one ticket is $9.50, and the cost of one large popcorn is
$4.50. The expression 4(9.5)+4(4.5) shows the total cost for the four friends. Which of these is equivalent to
the given expression?
4[4.5+9.5)
4.5(4+9.5)
(4+4) (9.5+4.5)
(4x4) (9.5+4.5)
Answer:
4(4.5 + 9.5)
Step-by-step explanation:
Answer:4(4.5+9.5)
Step-by-step explanation:
The figure shows two perpendicular lines s and r, intersecting at point Pin the interior of a trapezoid. Line ris parallel to the bases and bisects both legs of the trapezoid. Line s bisects both bases of the trapezoid. РWhich transformation will always carry the figure onto itself? a) A rotation of 270° clockwise about point P b) A reflection across liner c) A reflection across liner d) A rotation of 180° clockwise about point P e) A rotation of 90° clockwise about point P f) A reflection across line s
A reflection of across line s is correct
The correct option is (b)
"Information available from the question"
The figure shows two perpendicular lines s and r, intersecting at point Pin the interior of a trapezoid.
Line r is parallel to the bases and bisects both legs of the trapezoid. Line s bisects both bases of the trapezoid.
Analysis the figure:
Since s is a line of symmetry
(x, y) = (-x, y)
r is not a line of symmetry
∴ (x, y) ≠ (x, -y)
(a) Across line r
(x, y) = (x, -y)
This is incorrect
(b)Reflection across line s
(x ,y) = (-x, y)
This is correct
(c) Rotation of 90° clockwise
(x, y) = (y ,-x)
This is incorrect
(d) Rotation of 180° clockwise
(x, y) = (-x, -y)
This is incorrect
(e) Rotation of 270° clockwise
(x, y) = (y ,-x)
This is incorrect.
Hence, A reflection of across line s is correct.
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What is the point-slope form of line with slope -3 that contains the point
(10,-1)?
Answer:
D. y+1=-3(x-10)
Step-by-step explanation:
the equation for point-slope form of the line is given as y-y1=m(x-x1) where (x1,y1) is a given point, and m is the slope
we are given the point (10,-1) that passes through the line and a slope of -3
so we can substitute what we know into our equation
y--1=-3(x-10)
simplify
y+1=-3(x-10)
therefore the answer is D
Hope this helps! Good luck on your assignment!
Question content area top
Part 1
The endpoints of are A(-8,-6) and B(-3,-1). Point C lies on AB and is 2/5
of the way from A to B. What are the coordinates of point C? Explain how you found your answer.
Answer:
(-6,-4)
Step-by-step explanation:
So there actually is really easy way to solve this problem(that many people will never teach you for some weird reason).
Find difference between two points first in x and y direction.
X difference = (-3 - (-8)) = 5
Y difference = (-1 - (-6)) = 5
Multiply 2/5 to each difference
X difference 5 * 2/5 = 2
y difference 5* 2/5 = 2
just add the two number to First point(point A)
-8 + 2 = -6
-6 + 2 = -4
(-6,-4)
Question * Let D be the region enclosed by the two paraboloids z = 3x² + 12/²4 y2 z = 16-x² - Then the projection of D on the xy-plane is: 2 None of these 4 16 This option This option = 1 This opti
The correct option would be "None of these" since the projection is an ellipse and not any of the given options (2, 4, 16, or "This option").
To determine the projection of the region D onto the xy-plane, we need to find the intersection curve of the two paraboloids.
First, let's set the two equations equal to each other:
3x² + (12/24)y² = 16 - x²
Next, we simplify the equation:
4x² + (12/24)y² = 16
Multiplying both sides by 24 to eliminate the fraction:
96x² + 12y² = 384
Dividing both sides by 12 to simplify further:
8x² + y² = 32
Now, we can see that this equation represents an elliptical shape in the xy-plane. The equation of an ellipse centered at the origin is:
(x²/a²) + (y²/b²) = 1
Comparing this with our equation, we can deduce that a² = 4 and b² = 32. Taking the square root of both sides, we have a = 2 and b = √32 = 4√2.
So, the semi-major axis is 2 and the semi-minor axis is 4√2. The projection of region D onto the xy-plane is an ellipse with a major axis of length 4 and a minor axis of length 8√2.
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ALGEBRA 2
i need work shown the answers are 2,3,5,9,17
The LCM of the numbers 2, 3, 5, 9, and 17 is 510.
Algebra 2 is a branch of mathematics that deals with equations and functions. Algebra 2 provides the building blocks for advanced studies in many fields, including science, engineering, and mathematics.
The following is the step-by-step solution to the given problem:Find the LCM of the numbers 2, 3, 5, 9, and 17:LCM (2, 3, 5, 9, 17)First, write each number as a product of prime factors.2 = 2¹3 = 3¹5 = 5¹9 = 3²17 = 17¹Next, write the LCM as a product of prime factors.2¹ × 3² × 5¹ × 17¹ = 510
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Part 2: How many phone numbers can be made if the first digit must be 1, the second digit must
be a number in the range 3-5, the third digit must be a number in the range (6-9), and the last
seven digits can be any single digit number 0-9?
I
Answer: There are 21,000,000 phone numbers that can be made under the given constraints.
Step-by-step explanation:
Given the first digit must be 1, the second digit must be a number in the range of 3-5, the third digit must be a number in the range of 6-9, and the last seven digits can be any single digit number 0-9.
There are 3 possible choices for the second digit (3, 4, or 5) and 4 possible choices for the third digit (6, 7, 8, or 9). For the last seven digits, there are 10 choices for each digit.
Therefore, the total number of phone numbers that can be made is:
1 x 3 x 4 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 21,000,000
Thus, there are 21,000,000 phone numbers that can be made under the given constraints.
Answer:
Step-by-step explanation:
write a quadratic function f whose zeros are 9 and 1.
Answer: y=(x-9)(x-1)
Step-by-step explanation:
A data set comparing a woman's shoe size to her height is represented by the table.
Shoe Size Height (inches)
7.5 63
9 72.5
11 70
7 62
9 69.5
10 72
12 72.5
13 73
13 70
What is the equation for the line of best fit for a woman's height, y, based on her shoe size, x?
y = 1.24x + 70.1
y = −1.24x − 70.1
y = 1.36x + 55.6
y = −1.36x − 55.6
The equation for the line of best fit for a woman's height, y, based on her shoe size, x is y = 1.36x + 55.6.
From the given table:
To find the equation we need to insert the points (x,y) in calculator.
Points are:
Sum of X = 91
Sum of Y = 624.5
Mean X = 10.1111
Mean Y = 69.3889
Sum of squares (SSX) = 42.8889
Sum of products (SP) = 57.6111
Regression Equation = ŷ = bX + a
b = SP/SSX = 57.61/42.89 = 1.34326
a = MY - bMX = 69.39 - (1.34*10.11) = 55.80699
y = 1.34326X + 55.80699
aproximate:
y = 1.36 + 55.6.
Therefore The equation for the line of best fit for a woman's height, y, based on her shoe size, x is y = 1.36x + 55.6.
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I’m not 100% sure on this
Answer:
it's D I think
Step-by-step explanation:
..........
Answer:
D
Step-by-step explanation:
A line segment is a straight line that ends , the arrows mean the the ray or line dont end
What is the first inverse operation needed to solve for p? 2p - 254= 900
Answer:
inverse operation add (254 to other side)
2p - 254 = 900
+254 = + 254
then divide
2p = 1154
/2 = /2
p = 577
Answer:
this didn't answer the question...
Step-by-step explanation:
answer choices are, multiplication, addition, division, subtraction.. thanks!
find two numbers whose difference is 164 and whose product is a minimum.
Answer: The lowest possible product would be -6724 given the numbers 82 and -82.
We can find this by setting the first number as x + 164. The other number would have to be simply x since it has to have a 164 difference.
Next we'll multiply the numbers together.
x(x+164)
x^2 + 164x
Now we want to minimize this as much as possible, so we'll find the vertex of this quadratic graph. You can do this by finding the x value as -b/2a, where b is the number attached to x and a is the number attached to x^2
-b/2a = -164/2(1) = -164/2 = -82
So we know one of the values is -82. We can plug that into the equation to find the second.
x + 164
-82 + 164
82
Step-by-step explanation: Hope this helps.
In the circle below, segment CB is a diameter. If the length of CDB is 14, what is the length of the radius of the circle?
GIVEN:
We are given a circle with center A and diameter CB.
The length of arc CDB is 14;
\(arcCDB=14\pi\)Required;
We are required to calculate the lenght of the radius.
Step-by-step solution;
The length of an arc with the central angle measured in radians is;
\(s=r\theta\)The length of the arc is given, so also is the angle theta (180 degrees, that is half the circle).
We can convert the degree measure of the angle into radians as follows;
\(\begin{gathered} Degrees\Rightarrow Radians \\ \frac{r}{\pi}=\frac{d}{180} \end{gathered}\)Now we substitute the value of d (degree measure);
\(\begin{gathered} \frac{r}{\pi}=\frac{180}{180} \\ \\ \frac{r}{\pi}=1 \\ \\ Cross\text{ }multiply: \\ \\ r=\pi \end{gathered}\)Now we take the formula for the length of an arc as follows;
\(\begin{gathered} s=r\theta \\ Therefore: \\ \\ 14\pi=r\pi \end{gathered}\)Divide both sides by pi;
\(14=r\)Therefore, the radius is
ANSWER:
\(Radius=14\text{ }units\)13. The company you work for has downsized and you have lost your job. You receive a severance package of $65 000 and decide to invest it for retirement, earning an average of 7% per year. It has been suggested that you should be able to retire comfortably with $500 000 in savings. If your investment can be modelled with the equation y = 65000(1.07)^x how many years will pass before you reach $500 000?
Answer:
31 years
Step-by-step explanation:
65000*(1.07) ^31 is around $529000
however, 65000*(1.07) ^30 is around $491000
so you would need 31 years to gain more than $500,000.
It will take approximately 30 years to reach $500,000 in savings with an investment that earns an average of 7% per year.
To determine the number of years it will take to reach $500,000 in savings with an investment that earns an average of 7% per year, we can use the given investment model equation: y = 65000(1.07)ˣ.
We need to find the value of x, which represents the number of years.
Setting y = $500,000, we can solve for x:
500,000 = 65,000(1.07)ˣ
500,000/65,000 = (1.07)ˣ
100/13 = (1.07)ˣ
To solve for x, we take the logarithm of both sides:
ln 100/13 = ln (1.07)ˣ
ln 100/13 = x ln (1.07)
x = (ln 100/13)/(ln (1.07))
x = 30
Therefore, it will take approximately 30 years to reach $500,000 in savings with an investment that earns an average of 7% per year.
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Find the slope of the line shown on the graph to the right.
Answer: \(\frac{7}{3}\)
Step-by-step explanation:
The two points found on the graph are:
(x₁, y₁) = (2, 4)(x₂, y₂) = (-1, -3)The slope can be calculated as:
\(\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{-3-4}{-1-2} =\frac{-7}{-3} =\frac{7}{3}\)
Ellen has a bag with 333 red marbles and 222 blue marbles in it. She is going to randomly draw a marble from the bag 300300300 times, putting the marble back in the bag after each draw. 3 red marbles and 2 blue marbles What is the best prediction for the number of times that Ellen will draw a blue marble? Choose 1 answer:
The probability best prediction for the number of times that Ellen will draw a blue marble is 200.
Number of blue marbles: 222
Number of red marbles: 333
Total number of marbles: 555
Probability of drawing a blue marble:
222/555
= 0.4
Number of times drawing a blue marble:
300300300 x 0.4
= 120,120,120
Rounded to nearest whole number:
120,120
Ellen has a bag with 333 red marbles and 222 blue marbles in it. She is going to randomly draw a marble from the bag 300300300 times, putting the marble back in the bag after each draw. The best prediction for the number of times that Ellen will draw a blue marble is 200. This prediction is based on the fact that there are more red marbles than blue marbles in the bag. To calculate this, we first need to determine the probability of drawing a blue marble; there are 222 blue marbles out of 555 total marbles, so the probability is
222/555
= 0.4.
Multiplying this by the total number of draws (300300300) gives us 120,120,120. Rounding this to the nearest whole number gives us our prediction of 200 times.
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What is the slope of y=7x-2
QUESTION:
What is the slope of y=7x-2
ANSWER:
\(\green{{m = 7}}\)
EXPLANATION:
The slope-intercept form is \(\blue{{y = mx + b}}\) where \(\blue{{m}}\) is the slope and \(\blue{{b}}\) is the y-intercept
\(\green{{y = mx + b}}\)
Using the slope-intercept form, the slope is \(\blue{{7}}\)
\(\green{\boxed{m = 7}}\)
hope it's helps
Tammy starts an IRA to save for retirement at the age of 21. She deposits $350 each month. The IRA has an average annual interest rate of 5.9%. Answer the following questions, assuming Tammy retires at the age of 66.
Step 2 of 2 : Determine the amount of money Tammy deposited over the length of the investment and how much she made in interest.
Tammy deposited a total of $189,000 over the course of her IRA investment.
What is the the amount of money Tammy deposited over the length of the investment?To determine the amount of money Tammy deposited over the length of the investment, we need to calculate the total number of payments she made and then multiply that by the amount of each payment.
Tammy started saving for retirement at the age of 21 and retired at the age of 66, which is a period of 45 years.
The number of payments Tammy made is:
= 45 years * 12 months per year
= 540 payments.
The amount of each payment is $350.
Now, the total amount of money Tammy deposited over the length of the investment is:
= $350 * 540
= $189,000.
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