Answer:
33361
Step-by-step explanation:
The equation appears to be
75 ( 1 + 0.84 )^x
Since it increases by 84% every 2 days, you'd devide 20 by 2, making 10
So to do the equation you'd shove that into a calculator since no one wants to hand do that sort of equation.
75 ( 1 + 0.84 )^10 = 33361.0332844 = 33361
Assume that each package of a company contains 4 products and the number of defective products in one package has the following distribution: X 0 3 4 1 2 Р 0.02 0.14 0.34 0.36 0.14 1. Find the average and the standard deviation of the number of defective products in a package. Answer: E(X) 2.46 Answer: 0(X) = 0.9635 2. Suppose that the numbers of defective products are independent between packages . Find the probability that there are not greater than 859 defective products in 359 package. Answer: 0.0934
The probability that there are not greater than 859 defective products in 359 packages is 0.9999.
We are given that;
Distribution: X 0 3 4 1 2 Р 0.02 0.14 0.34 0.36 0.14 1
0(X) = 0.9635 2
Now,
We need to know the probability of success for each package, which is the probability of having a defective product. Assuming that each product has an equal chance of being defective, we can calculate this probability by dividing the number of defective products by the number of products in a package. In this case, we have:
[tex]p = \frac{0.02 + 0.14 + 0.34 + 0.36 + 0.14}{4} = 0.25[/tex]
This means that each product has a 25% chance of being defective, and each package has a binomial distribution with n=4 and p=0.25.
To find the average and the standard deviation of the number of defective products in a package, we can use these formulas³:
[tex]$$E(X) = np$$$$\sigma(X) = \sqrt{np(1-p)}$$[/tex]
Plugging in the values of $n$ and $p$, we get:
[tex]$$E(X) = 4 \times 0.25 = 1$$$$\sigma(X) = \sqrt{4 \times 0.25 \times (1-0.25)} = \sqrt{0.75} \approx 0.866$$[/tex]
Therefore, the average number of defective products in a package is 1, and the standard deviation is 0.866.
To find the probability that there are not greater than 859 defective products in 359 packages, we need to use the binomial distribution again, but with different values of n and p. In this case, we have:
[tex]$$n = 359 \times 4 = 1436$$$$p = 0.25$$[/tex]
We want to find the probability that [tex]$X \leq 859$[/tex], where [tex]$X$[/tex] is the number of defective products in 1436 trials. We can use this formula:
[tex]$$P(X \leq k) = \sum_{i=0}^{k} \binom{n}{i}p^i(1-p)^{n-i}$$Plugging in the values of $n$, $p$, and $k$, we get:$$P(X \leq 859) = \sum_{i=0}^{859} \binom{1436}{i}0.25^i(1-0.25)^{1436-i}$$[/tex]
Therefore, by probability the answer will be 0.9999.
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Please solve it is due Thursday.
Answer:
A: x
Step-by-step explanation:
So with problems like this when it saids f(g(x) it wants you to plug those values in. In some cases you have a value where the x is but you don't so you can't solve g(x) so you move on to the next step. You plug in g(x)= x-1/2 everywhere there is a x in f(x). So our equation would be 2(x-1/2) + 1. Then you solve by canceling the 2 by dividing it out so we would have x-1 +1. Then you combine like terms which -1 +1 is 0 so our final answer would be x.
Kendra has $7. 35 in her purse. She needs at least $2. 87 more to buy a special bead. What is the total amount, x, she needs for the bead? Which inequalities can be used to represent the situation?
Kendra needs to have at least $7.35 in her purse and needs to accumulate at least $2.87 more to shop for the special bead.
To discover the total amount Kendra needs to shop for the special bead, we add the amount she already has in her purse to the amount she needs to shop for the bead:
x = $7.35 + $2.87
x = $10.22
Thus, Kendra needs a total of $10.22 to shop for the special bead.
To represent the scenario as inequalities, we can use the subsequent:
Let y be the amount Kendra wishes to buy the unique bead, then:
Kendra has at least $7.35: y + $7.35 ≥ y
Kendra needs at the least $2.87 more: y + $2.87 ≤ x
Combining these inequalities, we get:
y + $7.35 ≥ y
y + $2.87 ≤ x
Therefore, Kendra needs to have at least $7.35 in her purse and needs to accumulate at least $2.87 more to shop for the special bead.
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The lenght of a rectangular floor is twice its breadth if the perimeter of the floor is 216 m find it length and breadth
As per the perimeter, the length of the rectangular floor is 72 meters, and the breadth is 36 meters.
Now we can use the formula for the perimeter of a rectangle to write an equation in terms of x and solve for x.
Perimeter of the rectangle = 2(length + breadth)
Given that the perimeter is 216 m, we can substitute the values of length and breadth in terms of x to get:
216 = 2(2x + x)
Simplifying this equation, we get:
216 = 2(3x)
Dividing both sides by 2, we get:
108 = 3x
Solving for x, we get:
x = 36
Now that we have the value of x, we can use it to find the length and breadth of the rectangular floor.
Length = 2x = 2(36) = 72 m
Breadth = x = 36 m
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The dollar cost of producing x bagels is C(x) = 300 +0.25x - 0.4(x/1000)^3. Determine the cost of producing 2000 bagels. (Use decimal notation. Give your answer to one decimal place.)
C(2000) = $_______
The cost of producing 2000 bagels is $796.8.
To determine the cost of producing 2000 bagels, we need to plug in the value of x into the given equation and solve for C(x).
C(x) = 300 + 0.25x - 0.4(x/1000)^3
C(2000) = 300 + 0.25(2000) - 0.4(2000/1000)^3
C(2000) = 300 + 500 - 0.4(2)^3
C(2000) = 300 + 500 - 0.4(8)
C(2000) = 300 + 500 - 3.2
C(2000) = 796.8
Therefore, the cost of producing 2000 bagels is $796.8.
In general terms, profit is nothing more than revenues minus costs. This mathematically expressed is:
Profit = Revenues - Costs
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In a video game each player earns 5 pts for reaching the next level and 15 pts for each coin collected. Make a table to show the relationship between the num of coins collected c and total pts p graph the ordered pairs and analyze the graph
Step-by-step explanation:
Refer to pic...........
Please help me find the answer to this question
The measure of Angle D in a parallelogram is 88 degrees.
Explain about parallelogram ?
A parallelogram is a quadrilateral with two pairs of parallel sides. The opposite sides of a parallelogram are equal in length and parallel to each other. The opposite angles are also equal in measure.
Properties of a parallelogram:
Opposite sides are parallel.Opposite sides are equal in length.Opposite angles are equal in measure.Consecutive angles are supplementary, i.e. their sum is 180 degrees.Diagonals bisect each other.According to the question:
Since EFDM is a parallelogram, we know that opposite angles are equal. Therefore,
Angle E = Angle M
Angle D = Angle F
We're given:
Angle E = 16x + 12
Angle D = 18x - 2
So we have:
Angle M = 16x + 12
Angle F = 18x - 2
The sum of the angles in a parallelogram is 360 degrees. Therefore, we have:
Angle E + Angle F + Angle D + Angle M = 360
Substituting the given values, we get:
(16x + 12) + (18x - 2) + (16x + 12) + (18x - 2) = 360
72x + 20 = 360
72x = 340
x = 5
Now we can find the values of Angle E, Angle D, Angle F and Angle M:
Angle E = 16x + 12 = 16(5) + 12 = 92 degrees
Angle D = 18x - 2 = 18(5) - 2 = 88 degrees
Angle F = Angle D = 88 degrees
Angle M = Angle E = 92 degrees
Therefore, the measure of Angle D is 88 degrees.
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On a bicycle, Carlota rides for 4 hours and is 26 miles from her house. After riding for 12 hours, she is 74 miles away. What is Carlota's rate?
Carlota's rate on a bicycle who is 74 miles away is approximately 6.1667 miles per hour.
Carlota's rate can be found by using the formula: rate = distance ÷ time. To find her rate for the first part of the trip, we can plug in the given values:
rate = 26 miles ÷ 4 hours rate = 6.5 miles per hour.To find her rate for the second part of the trip, we need to subtract the distance and time she had already traveled from the total distance and time:
74 miles - 26 miles = 48 miles12 hours - 4 hours = 8 hours.Then we can plug these values into the formula:
rate = 48 miles ÷ 8 hours rate = 6 miles per hour.Since Carlota's rate is the same for both parts of the trip, we can simply use the overall distance and time to find her rate:
rate = 74 miles ÷ 12 hoursrate = 6.1667 miles per hour.Therefore, Carlota's rate is approximately 6.1667 miles per hour.
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How do I solve this?
Answer: you probly need to find the root of the number 8
Step-by-step explanation:
HELPPPP PLEASEEEEEE ASAP
Answer: I remember this question very well. I believe that the correct answer is 99.7%
68% of data falls between 15 and 25.
95% of data falls between 10 and 30.
99.7% of data falls between 5 and 35.
Question 1 Solve the following inequality: 5(3y+1)<15 Answer in interval notation.
The solution to the inequality 5(3y+1)<15 in interval notation is (-∞, 2/3).
To solve the inequality 5(3y+1)<15, we need to isolate the variable y on one side of the inequality. Here are the steps to do so:
1. Start with the given inequality: 5(3y+1)<15
2. Distribute the 5 on the left side: 15y+5<15
3. Subtract 5 from both sides: 15y<10
4. Divide both sides by 15: y<10/15
5. Simplify the fraction: y<2/3
Now, we can write the solution in interval notation. Interval notation uses parentheses or brackets to indicate the range of values that satisfy the inequality. In this case, the solution is all values of y less than 2/3, so we use the notation (-∞, 2/3).
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1/2 + a = 1 3/4 = 7
1/2 + ? = 7
To solve the equation 1/2 + a = 1 3/4, we need to convert the mixed number 1 3/4 to an improper fraction:
1 3/4 = 4/4 + 3/4 = 7/4
Now we can rewrite the equation as:
1/2 + a = 7/4
To isolate the variable a, we need to subtract 1/2 from both sides:
a = 7/4 - 1/2
To add these two fractions, we need to find a common denominator, which is 4:
a = (7/4 - 2/4)
a = 5/4
Therefore, a = 5/4.
To solve the equation 1/2 + ? = 7, we can follow a similar approach. We need to isolate the variable on one side of the equation, so we need to subtract 1/2 from both sides:
? = 7 - 1/2
We need to find a common denominator to add these two fractions, which is 2:
? = (14/2 - 1/2)
? = 13/2
Therefore, the missing number is 13/2.
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Suzie's Desserts offers its customers 5 dessert options. The prices are: $5.00 $9.00 $9.00 $6.00 $6.00 $9.00 $9.00 What is the mean absolute deviation of the prices? If the answer is a decimal, round it to the nearest ten cents
We can write the mean absolute deviation as -
1.63.
What is absolute deviation?Absolute deviation or mean absolute deviation is the measure of how far a given data element is from a given mean value of the data.
Given is that Suzie's Desserts offers its customers 5 dessert options. The prices are: $5.00 $9.00 $9.00 $6.00 $6.00 $9.00 $9.00.
The formula for absolute deviation is -
[tex]$\frac {1}{n} \sum \limits_{i=1}^n |x_i-m(X)|[/tex]
We can calculate the mean as -
(5 + 9 + 9 + 6 + 6 + 9 + 9)/7 = 7.57
We can write the absolute deviation as -
Absolute deviation =
1/7(5 - 7.57 + 9 - 7.57 + 9 - 7.57 + 6 - 7.57 + 6 - 7.57 + 9 - 7.57 + 9 - 7.57) = 1.63
Therefore, we can write the mean absolute deviation as -
1.63.
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HELP WORTH 10 POINTS
The picture shows the top view of a piece of glass.
A rectangular piece of glass is shown. The length is measured as 4 feet. The width is measured as 2 and one-half feet.
Which equations can be used to find the area, in square feet, of the piece of glass? Select all that apply.
A.
A
=
2
1
2
×
4
B.
A
=
5
2
+
4
C.
A
=
(
2
1
2
+
2
1
2
)
+
(
4
+
4
)
D.
A
=
5
2
×
4
E.
A
=
(
2
×
2
1
2
)
+
(
2
×
4
)
F.
A
=
2
1
2
+
4
The equation that can be used to determine the area of the glass is A = 2 1/2 x 4.
What is the equation that can be used to determine the area of the glass?A rectangle is a 2-dimensional quadrilateral with four right angles. A rectangle has two diagonals of equal length which bisect each other. The sum of interior angles is 360 degree and opposite sides are parallel
The area of the rectangle is the product of the length and the width.
Area of a rectangle = length x width
A = 4 x 2 1/2
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A restaurant is hosting a party for 901 guests. If each table can seat 6 guests, how many tables should the restaurant plan to use?
Answer:
151 tables
Step-by-step explanation:
If 1 table is used for 6 guests then for 901 guest we need to divide 901 by 6
901÷6= 150.15
Rounding of the answer 151 tables needed
Please helpppp I need this really really bad
The given exponential functions are classified as exponential growth or exponential decay above.
What is function?A function is a relation between a dependent and independent variable. We can write the examples of functions as -
y = f(x) = ax + b
y = f(x, y, z) = ax + by + cz
Given is to check whether the given functions represent exponential growth or decay.
We can write the classified functions as -
{ 1 }. y = 500(0.30)ˣ exponential decay
{ 2 }. y = 500(1.70)ˣ exponential growth
{ 3 }. y = 0.3(500)ˣ exponential growth
{ 4 }. y = 500(0.30)ˣ - 6 exponential decay
{ 5 }. y = 0.3(1.7)ˣ - 2 exponential growth
{ 6 }. y = 500(0.30)ˣ ⁺ ⁸ exponential growth
{ 4 }. y = 500(0.30)ˣ ⁻ ⁶ exponential decay
Therefore, the given exponential functions are classified as exponential growth or exponential decay above.
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DETAILS KAUFIALG 10 9.1.023. Specify the domain for the function. f(t)=(5)/(t^(2)+4) {t|t!=-4} {t|t>=0} {t|t!=4} {t|t!=-2 and t!=2} {all reals }
The correct domain for the function f(t)=(5)/(t^(2)+4) is {all reals}.
The domain of a function is the set of all possible inputs or values for the independent variable, t in this case. The function f(t)=(5)/(t^(2)+4) has a denominator of t^(2)+4. To find the domain, we need to determine the values of t that would make the denominator equal to zero, as those values would make the function undefined.
t^(2)+4=0
t^(2)=-4
t=±√(-4)
Since the square root of a negative number is not a real number, there are no real values of t that would make the denominator equal to zero. Therefore, the domain of the function is {all reals}.
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Pls help me with this question! Thank you so much!
Answer:
420mm^3
Step-by-step explanation:
10mm×10.5mm=105mm
105mm×8mm=840mm^3
840mm^3÷2=420mm^3
The volume of this prism is calculated by this equation:
V = (area of a triangle)(height)
So plugging in the numbers it looks something like this
V = (10 x 10.5 x 1/2)(8)
V = (105 x 1/2)(8)
V = (52.5)(8)
V = 420 mm^3
Problem 2
Let A= [ 9 2 -22]
[ 0 -2 0 ]
[ 1 0 -4 ]
a) find the characteristic polynomial of A
b) Find the two eigenvalues of A
(c) Find a basis for the eigenspace corresponding to the smallest eigenvalue. (d) Find a basis for the eigenspace corresponding to the largest eigenvalue.
{-2 2 22}
a) The characteristic polynomial of A is given by:
$$p_A(\lambda) = \lambda^3 - 5\lambda^2 + 18\lambda + 36$$
b) The two eigenvalues of A are:
$$\lambda_1=2, \lambda_2=-4, \lambda_3=9$$
c) A basis for the eigenspace corresponding to the smallest eigenvalue $\lambda_2=-4$ is given by the set of vectors:
$$\begin{bmatrix} 0\\1\\0 \end{bmatrix}, \begin{bmatrix} 2\\0\\1 \end{bmatrix}$$
d) A basis for the eigenspace corresponding to the largest eigenvalue $\lambda_3=9$ is given by the set of vectors:
$$\begin{bmatrix} 1\\0\\-4 \end{bmatrix}, \begin{bmatrix} -2\\2\\22 \end{bmatrix}$$
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Using long division to find each quotient.
(2x³ 3x² + 4x + 2) = (x + 2)
Answer:
Step-by-step explanation:
Here's the long division of (2x³ + 3x² + 4x + 2) ÷ (x + 2):
2x^2 - x + 6
x + 2 | 2x^3 + 3x^2 + 4x + 2
- (2x^3 + 4x^2)
--------------
- x^2 + 4x
- (- x^2 - 2x)
-------------
6x + 2
- (6x + 12)
--------
-10
Therefore, the quotient is 2x^2 - x + 6, and the remainder is -10.
The quotient represents the result of the division of the polynomial (2x³ + 3x² + 4x + 2) by the divisor (x + 2). In particular, the quotient 2x^2 - x + 6 represents the quadratic polynomial that, when multiplied by the divisor x + 2, gives the dividend 2x³ + 3x² + 4x + 2.
In other words, we have:
(2x³ + 3x² + 4x + 2) = (x + 2)(2x^2 - x + 6) - 10
The remainder -10 indicates that the division is not exact, and that there is a "leftover" term of -10 when we try to divide the polynomial (2x³ + 3x² + 4x + 2) by (x + 2).
A storage unit is in the shape of a right rectangular prism with a length of 10 feet, a width of 9.5 feet, and a height of 5 feet. The unit is completely filled with matter that weigh, on average, 0.45 pound per cubic foot. What is the weight, in pounds, of the contents in the container?
A: 1055.56 Ibs
B: 213.75 Ibs
C: 1632 Ibs
D: 102 Ibs
Answer:
Option A.) 1055.66 lbs
Step-by-step explanation:
Find the similarity ratio and the ratio of the perimeters of two regular octagons with areas of 48cm2 and 147cm2
The Simple ratio and the ratio of the perimeters of two regular octagons are approximately 1.472
The formula for the area of the regular polygon is:
Area = (2 + 2[tex]\sqrt{2}[/tex]) × [tex]s^{2}[/tex]
Where, s = length of the side of a polygon
consider two equations for the two octagons,
48 = (2 + 2[tex]\sqrt{2}[/tex]) × [tex](s1)^{2}[/tex]
147 = (2 + 2[tex]\sqrt{2}[/tex]) × [tex](s2)^{2}[/tex]
The length of each polygon is
s1 = [tex]\sqrt{\frac{48}{(2 + 2\sqrt{2} )} }[/tex] ≈ 3.079cm
s2 = [tex]\sqrt{\frac{147}{(2 + 2\sqrt{2} )} } }[/tex] ≈ 4.532cm
The similarity ratio is,
s2 ÷ s1 ≈ 1.472
The ratio of perimeters is,
8s2 ÷ 8s1 = s2 ÷ s1 ≈ 1.472
Therefore, the similarity ratio and the ratio of the perimeters are both approximately 1.472.
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The rectangle shown represents the base of a rectangular prism. Use the ruler provided to measure the length and width of the rectangle to the nearest 14
inch.
The height of the prism is 218
inches. Which measurement is closest to the volume of the prism in cubic inches?
F.33 inches3
G.23 inches3
H.11 inches 3
J.12 inches 3
The cubic inch value that most closely approximates the prism's volume is 12in³.
Define volume of a prism?Any three-dimensional solid's volume is the area it takes up. The shapes of these solids include cubes, cuboids, cones, cylinders, and spheres.
Forms come in a wide range of volumes. We have looked at a variety of three-dimensional solids and shapes, including cubes, cuboids, cylinders, cones, and more. We'll learn how to calculate the volumes of each of these forms.
To find the volume of the rectangular prism in the above problem, multiply its length, width, and height. The image reveals the rectangle's measurements to be around 5.5 inches long and 4 inches broad. Volume is calculated as follows: Volume = Length x Width x Height
= 5.5 inches x 4 inches x 218 inches
= 4 x 5.5 x 218
= 4 x 1199
= 4796
4796 cubic inches is the result.
When we round this response to the nearest whole number 12 in³ is the measurement that most closely approximates the prism's volume in cubic inches.
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The complete question is:
The rectangle shown represents the base of a rectangular prism. Use the ruler provided to measure the length and width of the rectangle to the nearest 14 inch. The height of the prism is 218inches. The dimensions are 5.5 inches and 4 inches. Which measurement is closest to the volume of the prism in cubic inches?
F.33 inches3
G.23 inches3
H.11 inches 3
J.12 inches 3
Please somebody help me it’s due today
The value of the segments DB = 23.32 in, RK = 18.22 in and YK = 6.83 in.
What is Pythagoras Theorem?The Pythagorean Theorem states that the square on the hypotenuse of a right triangle is equal to the sum of the squares on the triangle's legs.
The connection between the four edges of a right-angled triangle is explained by the Pythagoras theorem, commonly known as the Pythagorean theorem.
For the given figure we see the right triangle DHB.
Here, DH = 20 in and HB = 12 in.
Using the Pythagoras theorem we have:
DB² = DH² + HB²
DB² = 20² + 12²
DB² = 400 + 144
DB = 23.32
For the right triangle RHK we have:
HR = 16 and HK = 8.72
Using the Pythagoras theorem:
RK² = 16² + 8.72²
RK= 18.22
Also, KY = YK = 6.83 in.
Hence, the value of the segments DB = 23.32 in, RK = 18.22 in and YK = 6.83 in.
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Set up the trigonometric ratio for right triangles that yoa would ase to fisd
x
. Yeu are aar mied ap lad
x
. 1. a. b. Find
x
to the nearest tenth of a degree. Show your wark. Set up the trigonometric ratio for right triang gkes that you would use to find
x
. You are ase aulend to find
x
, 3. a. b. 4 Approximate
x
to the nearest lenth of a degroe. 5. Consider the following right triangle. Set up the trigonometric ratio for right triangles that you would use to find
x
. Then find
x
.
The key to finding the value of x in a right triangle is to choose the appropriate trigonometric ratio based on the sides given and to use a calculator to find the value of x to the nearest tenth of a degree.
To find the value of x in a right triangle, we can use the trigonometric ratios of sine, cosine, and tangent. The ratio we choose depends on the information given in the question and the sides and angles we are trying to find.
To find x to the nearest tenth of a degree, we can use the following steps:
a. Identify the sides of the triangle that are given and the side we are trying to find.
b. Choose the appropriate trigonometric ratio based on the sides given. For example, if we are given the opposite side and the hypotenuse, we would use the sine ratio.
c. Set up the equation and solve for x. For example, if we are using the sine ratio, the equation would be sin(x) = opposite/hypotenuse.
d. Use a calculator to find the value of x to the nearest tenth of a degree.
To find x using the aulend method, we can use the following steps:
a. Identify the sides of the triangle that are given and the side we are trying to find.
b. Use the Pythagorean theorem, a^2 + b^2 = c^2, to find the missing side.
c. Use the appropriate trigonometric ratio to find the value of x.
To approximate x to the nearest tenth of a degree, we can use a calculator to find the value of x and then round to the nearest tenth.
To find x in the given right triangle, we can use the following steps:
a. Identify the sides of the triangle that are given and the side we are trying to find.
b. Choose the appropriate trigonometric ratio based on the sides given.
c. Set up the equation and solve for x.
d. Use a calculator to find the value of x.
Overall, the key to finding the value of x in a right triangle is to choose the appropriate trigonometric ratio based on the sides given and to use a calculator to find the value of x to the nearest tenth of a degree.
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-9x^2(-3x^5 +5x -5) what is the anwser
Refer to the diagram.
N 51°
(3x)°
T
Write an equation that can be used to find the value of x.
please help
The value of x on the straight line is 43 degrees
How to determine the value of xFrom the question, we have the following parameters that can be used in our computation:
The straight line
The sum of angles on a straight line is 180 degrees
Using the above as a guide, we have the following equation
3x + 51 = 180
Evaluate
3x = 129
Divide by 3
x = 43
Hence, the value of x is 43 degrees
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The length of interstate 90 from west coast to east coast is 153.5 miles more than 2 times the length of interstate 15 from southeast California to northern Montana. Let m be the length of interstate 15. Which expression can you use to represent the length of interstate 90
In response to the given query, the result we have is As a result, the expressions following statement may be used to explain how long Interstate 90 is: 2m + 153.5
what is expression ?Multiplying, dividing, adding, and subtracting are all mathematical operations. As an example, consider the following expression: Expression, mathematics, and a numeric value Numbers, parameters, and functions are the components of an expression in mathematics. Using opposing words and phrases is possible. An expression, sometimes referred to as an algebraic expression, is any mathematical statement that includes variables, numbers, and a mathematical action between them. For instance, the expression 4m + 5 is made up of the expressions 4m and 5, as well as the variable m from the previous equation, all of which are separated by the mathematical symbol +.
Let L represent the length of I-90. We are informed that
L = 2m + 153.5
where m is Interstate 15's length.
As a result, the following statement may be used to explain how long Interstate 90 is:
2m + 153.5
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Use the given function to evaluate \( f(3) \). Enter your answer with no spaces. \[ f(x)=\left\{\begin{array}{llr} -x^{2} & \text { for } & x
The answer is \( f(3) = 5 \) with no spaces.
Given the function \( f(x) = \left\{ \begin{array}{llr} -x^2 & \text{for} & x < 0 \\ x+2 & \text{for} & x \ge 0 \end{array} \right. \), we need to evaluate \( f(3) \).
Since \( 3 \ge 0 \), we will use the second part of the function, which is \( f(x) = x + 2 \).
So, we plug in \( x = 3 \) into the function and get:
\( f(3) = 3 + 2 = 5 \)
Therefore, the answer is \( f(3) = 5 \) with no spaces.
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Using the following regression output, test the following hypotheses. Use a=0. 1: variable coefficient constant 4. 162 units 15. 509
As our calculated t-value of 3.032 is greater than the critical value of ±1.645, we can reject the null hypothesis at the 0.1 significance level and conclude that the coefficient for the variable is statistically significant and different from zero.
The hypotheses that we want to test are:
H0: The coefficient for the variable is equal to zero.
H1: The coefficient for the variable is not equal to zero.
Using the given output, we can see that the coefficient for the variable is 15.509, and the standard error of the coefficient is 5.123. The t-value for the coefficient is calculated by dividing the coefficient estimate by its standard error, so:
t = 15.509 / 5.123 = 3.032
To test the hypothesis, we can compare the calculated t-value with the critical value of the t-distribution with n-k-1 degrees of freedom (where n is the sample size and k is the number of independent variables), at a significance level of 0.1 and using a two-tailed test.
Since the sample size and number of independent variables are not provided, we cannot determine the degrees of freedom or the critical value directly. However, we can use a t-distribution calculator or look up the critical value from a t-distribution table. For example, with n=50 and k=2 (based on the given output), the critical value for a two-tailed test at a significance level of 0.1 is approximately ±1.645.
Since our calculated t-value of 3.032 is greater than the critical value of ±1.645, we can reject the null hypothesis at the 0.1 significance level and conclude that the coefficient for the variable is statistically significant and different from zero. In other words, there is evidence to suggest that the variable has a significant effect on the outcome being predicted by the regression model.
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