Answer:
False
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean \(\mu\) and standard deviation \(\sigma\), the z-score of a measure X is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \(\mu\) and standard deviation \(\sigma\), the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \(\mu\) and standard deviation \(s = \frac{\sigma}{\sqrt{n}}\).
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Population:
\(\mu = 30, \sigma = 8\)
Sample of 4
This means that \(n = 4, s = \frac{8}{\sqrt{4}} = 4\)
Probability of obtaining a sample mean greater than 34:
This is 1 subtracted by the p-value of Z when X = 34. So
\(Z = \frac{X - \mu}{\sigma}\)
By the Central Limit Theorem
\(Z = \frac{X - \mu}{s}\)
\(Z = \frac{34 - 30}{4}\)
\(Z = 1\)
Thus, the probability of obtaining a sample mean greater than 34 is equal to the probability of obtaining a z-score greater than z = 1.00, and the statement in this question is false.
What criteria can you use to show these two triangles are congruent?
AAS
SAS
ASA
Not congruent
The criteria that you can use to show these two triangles are congruent is A. AAS
What is congruence?If all three corresponding sides and all three corresponding angles are equal in size, two triangles are said to be congruent. It stands for "Angle, Angle, Side." Knowing two angles and one side is known as "AAS" (which is not between the angles). to make an AAS triangle work.
To find the other angle, add the three angles to 180°. then utilize the Law of Sines to determine each of the additional two sides. The triangles are said to be congruent when two angles and a non-included side of one triangle match the corresponding angles and sides of another triangle.
In conclusion, the correct option is A.
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A customer enrolled in a 1-year product purchase plan that costs $60 per month. After 6 months, the customer received a monthly discount of 20%. What is the total amount the customer will pay for the 1-year plan?
Answer:
$432
Step-by-step explanation:
60*6=360
They paid $360 for the first 6 months.
20%*60=.2*60
0.2*60=12
12*6=72
They paid $72 for the last 6 months.
360+72=432
They paid $432
$648 is the total amount the customer will pay for the 1-year plan
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that a customer enrolled in a 1-year product purchase plan that costs $60 per month.
After 6 months, the customer received a monthly discount of 20%.
We need to find the total amount the customer will pay for the 1-year plan.
Product Plan = $60 per month
Money he pay for 1 month = $ 60
Money He pay for first 6 month = 6 × 60 = $ 360
after 6 month he receives 20% discount monthly,
So, Now he pay for 1 month = 60 - 20% × 60
=60-20/100×60
=60-12=48
Money he pay for last 6 month = 6 × 48 = 288
Total Money he pay in a year = 360 + 288 = $ 648
Hence, $648 is the total amount the customer will pay for the 1-year plan
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please help asap!!!!!
Answer:
-7
Step-by-step explanation:
Solve:
\(\sqrt[3]{-343}\)\(\sqrt[3]{-1(7 * 7*7)}\)\(\sqrt[3]{-1} * \sqrt[3]{7*7*7}\)\(-1 * 7\)\(-7\)The answer is \(\boxed{-7}\)
-Chetan K
Help required thank you
AC = 14.25 in.AD = 5 in. DE = 9 in.AB ≈ 13.34 in.CD ≈ 13.34 in.mZEDC = 180° - mZAEBMidsegment ≈ 13.34 in.
To determine the measurements in Isosceles Trapezoid ABCD, we are given the following information:
AC = 14.25 in.
AD = 5 in.
DE = 9 in.
To find the missing measurements, let's analyze the properties of an isosceles trapezoid.
An isosceles trapezoid has two parallel sides, with the non-parallel sides being congruent. In this case, AD and BC are parallel sides, while AB and CD are the non-parallel sides.
Since AD is given as 5 in., we know that BC is also 5 in.
To find the length of AB and CD, we can use the fact that the non-parallel sides of an isosceles trapezoid are congruent. Thus, AB = CD.
Since AC is the diagonal of the trapezoid, it divides the trapezoid into two congruent right triangles. We can use the Pythagorean theorem to find the length of AB (or CD).
AC^2 = AB^2 + BC^2
Substituting the given values:
\((14.25)^2\)= \(AB^2 + (5)^2\)
203.0625 = AB^2 + 25
\(AB^2\)= 203.0625 - 25
AB^2 = 178.0625
AB = √178.0625
AB ≈ 13.34 in.
Since AB = CD, CD ≈ 13.34 in.
Now let's find the angles of the trapezoid:
To find angle ZEDC, we can use the fact that opposite angles in a trapezoid are supplementary. Therefore,
mZEDC = 180° - mZAEB
mZEDC = 180° - mZAEB
To find the midsegment, we can use the fact that it is the average of the lengths of the parallel sides. Thus,
Midsegment = (AB + CD) / 2
Midsegment = (13.34 + 13.34) / 2
Midsegment ≈ 13.34 in.
In summary:
AC = 14.25 in.
AD = 5 in.
DE = 9 in.
AB ≈ 13.34 in.
CD ≈ 13.34 in.
mZEDC = 180° - mZAEB
Midsegment ≈ 13.34 in.
Please note that the measurements are approximate due to the use of square roots.
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9/5,-5/2,-11/10,-4/5 least to greatest
Answer:
Step-by-step explanation:
-4/5, -11/10, -5/2, 9/5
The annual rate, r, it takes for 1 dollar to grow to X dollars in 2 years is given by the formula X = (1+r) ².
Find the rate necessary for a dollar to triple in 2 years.
The rate of interest is 73%.
What is the annual rate?
The term annual percentage rate of charge refers to the interest rate for an entire year rather than just a monthly fee or rate as applied on a loan, mortgage loan, credit card, etc. It can also be referred to as a nominal APR or an effective APR. It is an annual rate of a finance charge.
Given that 1 dollar to grow to X dollars in 2 years is given by the formula X = (1+r) ².
A dollar to triple in 2 years.
Thus putting X = 3 in X = (1+r) ²
3 = (1+r) ²
Take square root on both sides:
√3 = 1 + r
Subtract 1 from both sides:
r = √3 - 1
r = 0.73
r = 73%
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The mean height of three boys is 150 centimeters. The mean height of two girls is 145.Find the mean height of five students
A mean is an arithmetic average of a set of observations. The mean height of the five students is 148.
What is Mean?A mean is an arithmetic average of a set of observations. it is given by the formula,
Mean = (Sum of observations)/Number of observations
Given that the mean height of three boys is 150 centimeters. Therefore, the sum of height of the three boys is,
Mean Height of boys = Sum of height of boys / Number of boys
150 = Sum of height of boys/ 3
Sum of height of boys = 150 x 3 = 450
Also, given that the mean height of two girls is 145 centimeters. Therefore, the sum of height of the two girls is,
Mean Height of girl = Sum of height of girls/ Number of girls
145 = Sum of height of girls/ 2
Sum of height of girls = 145 x 2 = 290
Further, the mean height of five students is,
Mean height of five students = Sum of height of students / Number of students
Mean height of five students = (450 + 290)/ 5
Mean height of five students = 740 / 5
= 148
Hence, the mean height of the five students is 148.
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What is 1/4 of 12????????
Answer:
3
Step-by-step explanation:
12 divided by 4 is 3. Therefor 1/4 of 12 is 3.
Answer:
3
Step-by-step explanation:
Do 12 times .25!
Hope this helps and have a great day!
Enter the correct answer in the box. Simplify this expression.
Answer:
\(4^6\)
Step-by-step explanation:
\(4^9 \div 4^3\)
Apply the law of exponents.
\(=4^{9-3}\)
\(=4^6\)
Answer:
4^6
Step-by-step explanation:
Solve:
7x+5(x-1)=-5+12x
please show work!
The solution for the given equation; 7x+5(x-1)=-5+12x as required to be determined is; Infinitely many solutions.
What is the solution for the given equation; 7x+5(x-1)=-5+12x?It follows from the task content that the solution for the given equation; 7x+5(x-1)=-5+12x is to be determined.
Since the given equation is; 7x + 5 (x-1) = -5 + 12x
Hence, by the distributive property; we have that;
7x + 5x - 5 = -5 + 12x
12x - 5 = 12x - 5
On this note, since both sides of the equation are same, it follows that the equation has infinitely many solutions.
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Divide 36x5 − 44x4 − 28x3 by 4x2. 9x2 − 11x − 7 9x2 + 11x + 7 9x3 − 11x2 − 7x 9x3 + 11x2 + 7x
On dividing, (36x⁵ - 44x⁴ - 28x³) / (4x²), we get the quotient as \(\frac{(36x^5 - 44x^4 - 28x^3) }{ (4x^2) }= \frac{9x^3 - 11x^2 + 7x + 7x}{(4x^2)}\)
Explain Division.To determine how many times one number can fit into another, division is a mathematical procedure that includes dividing one number by another. In division, the quantity being divided is referred to as the dividend, the quantity dividing the dividend is referred to as the divisor, and the quantity being divided is referred to as the quotient.
There are various ways to write the operation and the symbol for division is or /. For instance, 12 divided by 3 can be expressed as follows:
12 ÷ 3 = 4
12 / 3 = 4
12 divided by 3 equals 4
It's crucial to remember that in division, the divisor cannot equal zero because division by zero is illogical. A residual, which may be stated as a fraction or decimal, is left over when the dividend cannot be divided by the divisor in an exact number. When 10 is divided by 3, for instance, the result is 3 with a remainder of 1, which is represented as 3 1/3 or 3.3333... in decimal form.
In many different mathematical contexts, including those involving fractions, decimals, ratios, and proportions, division is a fundamental arithmetic operation. Additionally, it is utilized in more complex mathematical ideas like trigonometry, calculus, and algebra.
To divide 36x⁵ - 44x⁴ - 28x³ by 4x², we can use polynomial long division as follows:
____________
4x² | 36x⁵ - 44x⁴ - 28x³ + 0x² + 0x + 0
9x³ - 11x² + 7x
-----------------------
36x⁵ - 0x⁴ - 28x³
36x^4 - 44x³ + 0x²
--------------------
44x^3 + 0x^2
44x^3 - 11x^2 + 0x
----------------------
11x^2 + 0x
11x^2 - 7x
---------
7x + 0
Therefore, the quotient is \(9x^3 - 11x^2 + 7x\) and the remainder is 7x.
Hence, the answer is:
\(36x^5 - 44x^4 - 28x^3 = 4x^2(9x^3 - 11x^2 + 7x) + 7x\)
or
\(\frac{(36x^5 - 44x^4 - 28x^3) }{ (4x^2) }= \frac{9x^3 - 11x^2 + 7x + 7x}{(4x^2)}\)
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Simplify express your answer as a single term without a denominator cd3•c-5d-2
The simplified expression is d/ c⁴.
To simplify the expression cd³ c⁻⁵ x d⁻², we can combine the variables with the same base (c and d) by adding their exponents:
Using the property of exponents as
Product Rule:When multiplying two exponential expressions with the same base, you can add the exponents. This can be expressed as follows:
aᵇ x aⁿ= aᵇ⁺ⁿ
Quotient Rule:When dividing two exponential expressions with the same base, you can subtract the exponents. This can be expressed as follows:
aᵇ / aⁿ= aᵇ⁻ⁿ
So, cd³ c⁻⁵ x d⁻²
= c¹⁻⁵ x d³⁻²
= c⁻⁴ x d¹
= dc⁻⁴
Again from the property of exponents
a⁻ᵇ = 1/aᵇ
So, dc⁻⁴
= d/ c⁴
Therefore, the simplified expression is d/ c⁴.
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Instructions: Determine whether the following polygons are
similar. If yes, type in the similarity statement and scale factor. If
no, type 'None' in the blanks.
Answer:
No they aren't similar different measurements but same angle so they can't be said to be similar
anyone know how to do this
To make the resultant expression subtract the first expression from the second expression.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
We have a rational expression:
Let:
\(\rm A - B = \dfrac{x^2+x+6}{x(x-6)(x+6)}\)
\(\rm \dfrac{\left(x+2\right)}{x^2-36}-\dfrac{\left1\right}{x^2+6x}= \dfrac{x^2+x+6}{x(x-6)(x+6)}\)
Thus, to make the resultant expression subtract the first expression from the second expression.
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Give me all the cords and I will give brain thingy
Answer:
B= left 6 up 7 C=left 2 up 6 D=left 3 up 2 E left 7 up 3
Step-by-step explanation:
I think this is how u do that. I'm not exactly sure but hope u get it right.
A sand timer has 60 ounces of sand in it. Sand trickled down at a rate of 12 ounces every 6 seconds. How long will it take for all the sand to fall into the bottom? It will take seconds.
Answer:
30 sec.
Step-by-step explanation:
3. Anneliese spent $58.00 on music items and paid $35.00 on a lay-away item. If she has
-142.00 left in her account, how much did she start with?
A $-49.00
B$93.00
C$135.00
D-$235.00
The amount Anneliese started with before her deductions is -$235.00.
Account balanceAmount spent on music items = $58.00Amount paid for lay-way item = $35.00Total amount spent = $58.00 + $35.00
= $93.00
Amount left in her account = $-142.00
Amount spent is a negative to her accountAmount Anneliese started with = -$93.00 - $-142.00
= -$235.00
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HELPPPPPPPPPP PLEASE HURRY
Five pirates share the treasure with Long John Silver. If the treasure is split, by weight, in the ratio 2:5:7:10:20:50, and the least amount any of the six pirates receives is 14,000 pounds of gold, what is the total weight of the treasure?
Answer:
658000
Step-by-step explanation:
Help with this ? It’s troubling
Answer:
y=50x
Step-by-step explanation:
give brainliest?
Answer:
A. y = 50x
Explanation:
coordinates: ( 50 , 1 ) , ( 100 , 2 )
slope: (y2-y1)/(x2-x1) = (100-50)/(2-1) = 50
equation using: y = mx +b....where m is slope and b is y-intercept
equation: y = 50x + 0
y = 50x
You sailed 0.055 units to the left and found treasure at 0.085 units find where the ship started
The ship started at the Position 0.14 units.
To determine the starting position of the ship, we can consider the distance sailed to the left and the distance to the treasure.
Given that you sailed 0.055 units to the left and found the treasure at 0.085 units, we can represent this situation mathematically as follows:
Starting position + Distance sailed to the left = Distance to the treasure
Let's assign a variable, "x," to represent the starting position of the ship.
The equation becomes:
x - 0.055 = 0.085
To find the value of x, we can solve this equation by isolating x on one side:
x = 0.085 + 0.055
x = 0.14
Therefore, the ship started at the position 0.14 units.
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How do I find the possible degree(s) of a function from the graph alone?
Answer:
To determine the possible degree(s) of a function from the graph alone, you need to examine the behavior of the graph at the extremes (far left and far right) and consider the number of turning points or changes in direction. Here's a step-by-step approach:
Look at the far left side of the graph: Determine the behavior of the graph as it approaches negative infinity. Does the graph approach a specific value, such as a horizontal line (asymptote) or the x-axis? If the graph approaches a horizontal line, it suggests a polynomial function of even degree. If the graph approaches the x-axis, it indicates a polynomial function of odd degree or possibly a function with a root of multiplicity greater than one.
Look at the far right side of the graph: Determine the behavior of the graph as it approaches positive infinity. Similar to step 1, observe if the graph approaches a specific value or a horizontal line. The behavior at the far right side should be consistent with the behavior at the far left side. This can help you identify if the function is even or odd degree.
Examine the number of turning points or changes in direction: Count the number of times the graph changes direction. These points are where the slope of the graph changes from positive to negative or vice versa. The number of turning points can provide an indication of the degree of the polynomial. For example, if there are two turning points, it suggests a polynomial function of degree 3.
Remember that this method provides potential degrees, but it may not definitively determine the exact degree of the function. Additional information or analysis might be required for a more accurate determination.
Finde the value of x in the proportion ( 5x+ 1 ):3 =(2x +2): 7(6 x) = (4x) :7
In the proportion (5x + 1):3 = (2x + 2):7, the value of x is -1/29.
In the proportion (6x):(4x) = 7, there is no value of x that satisfies the proportion.
To find the value of x in the given proportions, let's solve them one by one:
(5x + 1) : 3 = (2x + 2) : 7
To solve this proportion, we can cross-multiply:
7(5x + 1) = 3(2x + 2)
35x + 7 = 6x + 6
Subtracting 6x from both sides and subtracting 7 from both sides:
35x - 6x = 6 - 7
29x = -1
Dividing both sides by 29:
x = -1/29
Therefore, the value of x in the first proportion is -1/29.
(6x) : (4x) = 7
To solve this proportion, we can simplify the left side:
6x / 4x = 7
Dividing both sides by 2x:
3/2 = 7
This equation is not true, as 3/2 is not equal to 7.
Therefore, there is no value of x that satisfies the second proportion.
In summary, the value of x in the proportion (5x + 1) : 3 = (2x + 2) : 7 is -1/29, and there is no value of x that satisfies the proportion (6x) : (4x) = 7.
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Rotation 90° clockwise about the origin
N
O
G
An image of triangle NOG after a rotation 90° clockwise about the origin is shown below.
What is a rotation?In Mathematics and Geometry, a rotation is a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.
Next, we would apply a rotation of 90° clockwise about the origin to the coordinate of this triangle NOG in order to determine the coordinate of its image;
(x, y) → (y, -x)
Point N = (-4, -1) → Point N' (-1, 4)
Point O = (-4, -3) → Point O' (-3, 4)
Point G = (0, -1) → Point G' (-1, 0)
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If there are 8 people, and each person has 4 coins, there are ____ times as many coins as people.
Answer:
2 times
Step-by-step explanation:
Answer:
4 times
Step-by-step explanation:
8 x 4 = 32 total coins
32÷8 = 4
Therefore, there are 4 times as many coins as people.
Hope this helps! :)
Sowwy again, sowwy im bad at math :-
Answer:
4.0328
Step-by-step explanation:
just do 0.71 multiplied by 5.68 which will give you 4.0328
depending on what digit answer the system takes this is the answer
What is the value of A in this equation? sin(53.2°) = cos(A)
(I need this answer ASAP please)
Answer:
\(A= 35.8\)
Step-by-step explanation:
Given
\(sin(53.2) = cos(A)\)
Required
Find A
In trigonometry
\(sin(\alpha) = cos(\theta)\)
Then
\(\alpha + \theta = 90\)
So, this gives:
\(54.2 + A= 90\)
Make A the subject
\(A= 90-54.2\)
\(A= 35.8\)
In the diagram below of circle O, chords AD and BC intersect at E, and chords AB and CD are drawn.
Which statement must always be true?
PLEASE HELP!
The correct answer is (C) \(\angle B \cong \angle C.\) when In the diagram below of circle O, chords AD and BC intersect at E.
What is a circle ?
A circle is a two-dimensional geometric shape that consists of all the points in a plane that are at a fixed distance from a given point, called the center.
In the given diagram, we have a circle O with chords AB, CD, AD, and BC. The chords AD and BC intersect at point E.
Based on the diagram, we can see that the opposite angles in the quadrilateral AEDC are supplementary (i.e., they add up to 180 degrees). Therefore, we have:
\(\angle A + \angle C = 180^\circ\)
Similarly, the opposite angles in the quadrilateral BEFC are supplementary. Thus,
\(\angle B + \angle C = 180^\circ\)
We can rewrite the second equation as:
\(\angle C = 180^\circ - \angle B\)
Substituting this value of \angle C into the first equation, we get:
\(\angle A + 180^\circ - \angle B = 180^\circ\)
Simplifying, we get:
\(\angle A = \angle B\)
Therefore, the correct answer is (C) \(\angle B \cong \angle C.\)
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Choose the correct answer:
PLS HELP ASAP 30 points plsss
Answer:
\(\frac{x-4}{5x}\)
Step-by-step explanation:
The equation;
\(\frac{x^{2} - 8x + 16}{5x}\) ÷ x - 4
Factor;
\(\frac{(x-4)^{2}}{5x}\) ÷ ( x - 4 )
Rewrite in fraction form, so that one can perform division
\(\frac{(x-4)^2}{5x} * \frac{1}{x-4}\)
Simplify, cancel out like terms on opposite sides of the fraction bar
\(\frac{x-4}{5x}\)
Describe how
(2^3)(2^-4)
can be simplified.
Answer:
Add the exponents and keep the same base. Then find the reciprocal and change the sign of the exponent.
Step-by-step explanation:
your welcome