The smallest number of consumers that Timex can survey to guarantee a margin error of 0.05 or less at a 99% confidence level is 700. Option D.
How to solve for the sample numberThe z critical value at 99% confidence interval is given as 2.58
To get the sample size, we have to make use of the formula that is written as
n = (Z critical / ME)² p(1 - p)
the proportion is not given, hence we would assume it to be 50 percent
When we put the values in the formula above we would have:
(2.58 / 0.05)²0.5(1 - 0.5)
2662.56 * 0.5 * 0.5
= 665.64
This value would be approximated to the nearest hundred, hence the sample number would be 700. Option D.
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Make your angle measures correct to the nearest degree and side measures to 1 decimal place.
The value of angle Z= 39°, line XY= 21.9 and line XZ= 34.7
What is a right-angled triangle?A right-angled triangle is a type of triangle which as one of it's sides equal to 90°. Since angle Y is 90°, then ∆ABC is a right-angled triangle
angle Z = 180-(90+51)
angle Z= 180- 141= 39°
using trigonometry ratio
tan51 = 27/XY
XY= 27/tan51
XY= 27/1.2
XY= 21.9
using Pythagoras theorem
XZ²= 21.9²+27²
XZ²= 1208.6
XZ= √1208.6
XZ= 34.7
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The Johnson twins were born eight years after their older sister.
This year, the product of the three siblings' ages is exactly
1422 more than the sum of their ages. How old are the twins?
The age of the twins is 9 if the Johnson twins were born eight years after their older sister.
What are ages?When a ratio, such as p:q, is used to express age, qx and px are taken into account. The current age will be (xn) years if you assume the current age to be x. If you're assuming that x is the age you are now, then 1/n of your age will be equivalent to (x/n) years.
What are known as age problems are one use for linear equations. The ages of two separate persons (or objects), both present and future (or past), are typically compared for solving age-related problems. These issues typically seek to determine the current age of each subject.
Let the age of twins be x
The age of older sister be x+8
x(x)(x+8) = x + x + (x+8)+1422
x²(x+8) = 3x+1430
x³+8x² = 3x+1430
x³+8x²- 3x-1430=0
x=9.2045≈9
Therefore, the age of the twins is 9
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help meeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeee!!!!!!!!!!!!!!
Answer:
272 bison
Step-by-step explanation:
y(5)=240[tex](1+0.025)^{5}[/tex]
y(5) = 271. 5 bison ≈272 bison
An airline estimates that the probability that a random call to their reservation phone line result in a reservation being made is 0.31. You want to estimate the probability that exactly one of the next four calls result in a reservation being made. Describe the design of a simulation to estimate this probability. Explain clearly how you will use the partial table of random digits below to carry out your simulation.
The probability that exactly one of the next four calls results in a reservation being made is 40.75%
What is probability?
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
Here, we have
A random call to their reservation phone line results in a reservation being made is 0.31
Now, we find
Exactly one call gets resevervation = 4 * (1-0.31)3(0.31)
= 0.4075 = 40.75%
Now we can simulate an experiment by using random numbers from 0 to 100,000 as probability values between 0 and 31,000 are p to reservation otherwise they don't.
Hence, the probability that exactly one of the next four calls results in a reservation being made is 40.75%
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A garden in the shape of a right triangle has a perimeter of 72 feet. If the
lengths of the sides of this garden are each lengthened by a factor of 8,
what would be the perimeter of the new enlarged garden?
OA) 352 ft.
OB) 488 ft
OC) 576 ft
OD 692 ft.
The perimeter of the new enlarged garden whose side length lengthened by factor of 8 is equal to 576ft.
As given in the question,
Shape of the garden is right triangle
Let 'x' , 'y' , and 'z' represents the three sides of the triangle shape garden.
Perimeter of the garden = 72 ft
⇒ x + y + z = 72 ft __(1)
Now, length of the each sides of the new garden is lengthened by factor of 8.
Sides of the new garden are '8x' , '8y' , and '8z'
Perimeter of the new garden = 8x + 8y + 8z
⇒ Perimeter of the new garden = 8 ( x + y + z )
⇒ Perimeter of the new garden = 8 (72)
⇒ Perimeter of the new garden = 576 ft
Therefore, perimeter of the new garden is equal to 576ft.
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If X is the midpoint of TV, TV bisects RS, and TR is parallel to VS, state five pairs of objects (segments or angles) that must be congruent and give a reason why for each pair.
According to the Alternate Interior Angles Theorem, when two parallel lines are cut by a transversal, the resulting alternate interior angles are congruent.
Alternate Interior Angle Theorem?According to the Alternate Interior Angles Theorem, when two parallel lines are cut by a transversal, the resulting alternate interior angles are congruent.Is it true or false that different interior angles are always congruent? Although untrue, this assertion is a typical misunderstanding. Keep in mind that when the lines are parallel, alternate inner angles are congruent.Alternate Interior Angles are a pair of angles on the inner side of each of those two lines but on opposing sides of the transversal when two lines are crossed by another line (referred to as the Transversal). These two pairs of alternate interior angles in this illustration are c and f.To learn more about Congruent refer to:
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Tell whether the lines for the pair of equations are parallel, perpendicular or neither
y=5x+12
y=5x-1.3
The pair of lines given are parallel to each other.
What is the general equation of a Straight line?The general equation of a straight line is -
[y] = [m]x + [c]
where -
[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.
We have the following pair of lines -
y = 5x + 12
y = 5x - 1.3
Since the slope of lines are same, both of these lines are parallel to each other.
Therefore, the pair of lines given are parallel to each other.
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The length of a
rectangular garden is
three feet less than twice
its width. If the perimeter
of the garden is 42 feet,
what is its length?
Systems word problems
Answer:
The length will be 13 feet.
Step-by-step explanation:
Let the width be represented by w.
Based on the information given, the length will be:
= (2 × w) - 3
= 2w - 3
Therefore, the perimeter will be:
2(w) + 2(2w - 3) = 42
2w + 4w - 6 = 42
6w = 42 + 6
6w = 48
w = 48/6
w = 8
Therefore, the length will be:
L = 2w - 3
L = 2(8) - 3
L = 16 - 3
L = 13 feet
The length is 13 feet.
Answer:
The length will be 13 feet.
Step-by-step explanation:
Let the width be represented by w.
Based on the information given, the length will be:
= (2 × w) - 3
= 2w - 3
Therefore, the perimeter will be:
2(w) + 2(2w - 3) = 42
2w + 4w - 6 = 42
6w = 42 + 6
6w = 48
w = 48/6
w = 8
Therefore, the length will be:
L = 2w - 3
L = 2(8) - 3
L = 16 - 3
L = 13 feet
The length is 13 feet.
The fifth term of a non-linear equence i 9. The term-to-term rule i ‘divide by 3’. Work out the econd term of the equence
The fifth term of the given nonlinear sequence, where each term is split by three, is nine, while the second term will be 243.
What is non-linear sequence?A non- linear sequence is a pattern of numbers that always rises (or lowers) by the same amount. The common difference is the amount that it rises or falls by. They consist of Fibonacci-type sequences, geometric progressions, and quadratic sequences. Any function whose graph is NOT a line is said to be nonlinear. It has the equation f(x) = ax + b. With the exception of the form f(x) = ax + b, its equation can take any form. Any two points on the curve have the same slope. Every pair of points on the graph do not have the same slope.
Here,
a5=9
rule= divide by 3
a4=9*3
=27
a3=27*3
=81
a2=81*3
=243
The second term of the given non-linear sequence where fifth term is 9 and each term is divided by 3 will be 243.
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SET AT 50 POINTS AND BRAINLIEST
Which expression is equivalent to −6 + 8 − 3x − 9x?
−12x + 14
−12x + 2
12x + 14
−12x − 2
Answer:
-12x + 2
Step-by-step explanation:
-6+8 = 2
-3x - 9x = -12x
-12x + 2
Answer:
Step-by-step explanation:
-12x+14 i believe
Give a number in the form of a/b o that when it i divided by 100, the reult would be 0. 014 (write in fraction in reduce form)
The reduced form of the fraction would be 2.8/2.
What is a fraction?
A fraction is a portion of a whole or, more broadly, any number of equal parts. In everyday English, a fraction describes the number of parts of a specific size, such as one-half, eight-fifths, or three-quarters.
Given that a/b is a fraction and when it is divided by 100 it will result in 0.014.
So we can write,
[tex]\frac{\frac{a}{b} }{100}=0.014\\\\ \frac{a}{b}=0.014*100\\\\\frac{a}{b}=1.4\\[/tex]
Now 1.4 can be written as
a/b = 2.8/2
Hence, the reduced form of the fraction would be 2.8/2.
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Help help please help
Answer:
AB=45
Step-by-step explanation:
This is an isosceles triangle meaning AB and AC are congruent.
4x+1=2x+23
2x+1=23
2x=22
x=11
4(11)+1
44+1
45
If you roll a standard six-sided die a thousand times and add up the total number of pips, which approximate sum could you reasonably expect to end with?
1) 16.7% probability of rolling 10+.
2) 50% probability an odd number is rolled.
3) 7 is the most likely total result.
These are all the possible outcomes:
(1,1), (1,2), (1,3), (1,4), (1,5),(1,6)
(2,1), (2,2), (2,3), (2,4), (2,5),(2,6)
(3,1), (3,2), (3,3), (3,4), (3,5),(3,6)
(4,1), (4,2), (4,3), (4,4), (4,5),(4,6)
(5,1), (5,2), (5,3), (5,4), (5,5),(5,6)
(6,1), (6,2), (6,3), (6,4), (6,5),(6,6)
There are 36 possible outcomes
1) what is the probability of rolling 10+?
There are 6 possible outcomes in which 10+ is rolled:
(4,6), (5,5),(5,6), (6,4), (6,5),(6,6).
So there is a 6/36 = 0.167 = 16.7% probability of rolling 10+.
2) what is the probability of rolling an odd number?
There are 18 possible outcomes in which an odd number is rolled.
So there is a 18/36 = 0.5 = 50% probability an odd number is rolled.
3) what is the total that is most likely to result?
There are 6 outcomes in which 7 is rolled.
So 7 is the most likely total result.
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It cost Juan $7.30 to send 73 text messages. How many text messages did he send if he spent $10.20?
Answer:
102
Step-by-step explanation:
First, divide 7.30 by 73 to find how much 1 text message costs. We get 0.1. Next, divide 10.20 by 0.1, which gives us the final answer of 102.
Answer:
99 text messages
Step-by-step explanation:
$7.50 = 73
÷73 ÷73
---------------------
amount to = $0.102739726
send one text
0.102739726x = $10.20
÷0.102739726 ÷0.102739726
-------------------------------------------------
x ≈ 99.28
I hope this helps!
Factor the expression completely over the complex numbers. Y^4+14y^2+49
the answer is ((y+i√7)(y-i√7))^2
Am I right
Factors over the complex numbers for the given expression y⁴ + 14y² + 49 is equal to [ ( y + i√7) (y - i√7 ) ]² .
As given in the question,
Given expression is :
y⁴ + 14y² + 49
Simplify the given expression to get the factors of it , we get ,
y⁴ + 14y² + 49
= y⁴ + 2 ( 7 )y² + ( 7 )²
= ( y² + 7 )²
Now convert the factors into complex numbers ,
= [ y² - (-1)(√7)²]²
We know that ( -1 ) = i²
= [ y² - ( i√7)² ]²
= [ ( y - i√7 )( y + i√7) ]²
Therefore, the complex numbers factors of the given expression is equal to [ ( y - i√7 )( y + i√7) ]².
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Simplify. Show your work. Last one
The expression, 2·√(10) × 5·√(12), that has the symbol of the square root radical, can be simplified using the laws of indices, as follows:
2·√(10) × 5·√(12) = 20·√(30)
What are the laws of indices?The laws of indices are the set of rules for the simplification of the multiplication, division, and other combination of mathematical operations that involve expressions that have powers of variables or constants.
The specified radical expression is; 2·√(10) × 5·√(12)
The radical expression indicates the square root of the number under the expression, which is the value within the expression raised to the power (1/2)
The terms under the radical expression, that have the same index of (1/2) can therefore be multiplied together as follows;
2·√(10) × 5·√(12) = 2 × 5 ×√(10) × √(12)
2 × 5 ×√(10) × √(12) = 10 ×√(10) × √(12)
10 ×√(10 × 12) = 10 ×√(120)
10 ×√(120) = 10 ×√(4 × 30)
10 ×√(4 × 30) = 10 × 2 × √(30)
10 × 2 × √(30) = 20 × √(30)
Therefore; 2·√(10) × 5·√(12) = 20 × √(30) = 20·√(30)
The simplified form of the expression, 2·√(10) × 5·√(12) is 20·√(30)Learn more about the laws of indices here:
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help meeeeeeeeeeeeeeeeeee pleaseee!!!!help meeeeeeeeeeeeeeeeeee pleaseee!!!!help meeeeeeeeeeeeeeeeeee pleaseee!!!!
Answer:
8551.56
Step-by-step explanation:
[tex]A=5300(1+(0.08)/12)^{(12)(6)} \approx 8551.56[/tex]
57,624 divided by 46 and I have to show my work
Answer: 122 12/46 OR 122 R 12 OR 1252.69565
Step-by-step explanation:
A shopping mall has 226 stores on 4 levels. Each level of the mall has about the same number of stores. Which of the following are reasonable estimates for the number of stores on each level
The number of stores in each level of the shopping mall are 56 stores.
How to solve an equation?An equation is an expression that can be used to show the relationship between variables and numbers. In this case, two or more components are taken into consideration to describe the scenario. It is vital to note that an equation is a mathematical statement which is made up of two expressions that are connected by an equal sign.
Let x represent the number of stores on each level.
A shopping mall has 226 stores on 4 levels. If there are same number of stores in each level:
(4 × x) = 226
4x = 226
Divide
x = 226 / 4
x = 56.5
There are about 56 stores per level.
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1. Write two equivalent expressions to represent the area of this rectangle.
2. Write two equivalent expressions to represent the perimeter of this rectangle.
(pls add an explanation)
The perimeter of a rectangle is 2x+6 units and the area of a rectangle is 5x-10 square units.
Given that, the breadth of a rectangle =5 units and the length of a rectangle =(x-2) units.
What is the perimeter of a rectangle?The perimeter of a rectangle is the total distance of its outer boundary. It is twice the sum of its length and width and it is calculated with the help of the formula: Perimeter = 2(length + width).
Here, perimeter =2(x-2+5)
= 2(x+3)
= 2x+6 units
Area of a rectangle =length × width
= (x-2) × 5
= 5x-10 square units
Therefore, the perimeter of a rectangle is 2x+6 units and the area of a rectangle is 5x-10 square units.
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One morning after sunrise, Kimberly was standing facing a pole. The shadow of the pole fell exactly to her right. Which direction was she facing? a. North b. South c. West d. East
South direction was she facing.
What does the word "direction" mean?
Direction can refer to the way something moves, the way you must go to get somewhere, the way something is beginning to take shape, or the direction you are facing.
When you turn right rather than left, that is an illustration of direction.
Which forms of direction are there?
There are only four genuine directions north, south, east, and west. Northeast, Southeast, Southwest, and Northwest are the directions on the compass that are located midway between these cardinal points.
These transitional locations are referred to as intermediate directions. Maps and globes only display east-west and north-south lines.
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2(x-4 1/2)=-6.1 hellllllppppp meeeee
Answer:
[tex]x=1.45[/tex]
Step-by-step explanation:
[tex]2\left(x-4 \frac{1}{2} \right)=-6.1 \\ \\ 2\left(x-\frac{9}{2} \right)=-6.1 \\ \\ 2x-9=-6.1 \\ \\ 2x=2.9 \\ \\ x=1.45[/tex]
The soccer field is 105 meters long. The football field is 120 yards long. Which is longer?
The football field is longer than soccer field.
What is a expression? What is a mathematical equation? What is unit conversion?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.
We have a soccer field that is 105 meters long and a football field is 120 yards long.
In one yard, we have -
1 yard = 0.9144 meters
Then, in 120 yards, we will have -
120 x 0.9144 = 109.728 meters
Now, 109.728 meters > 105 meters.
Therefore, the football field is longer than soccer field.
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Revani has 120 coins. Of the coins, 2/6 are nickels, 2/6 are dimes, and the rest are
quarters. What is the ratio of Revani's nickels to dimes to quarters? please do step by step
Thank you!!
The ratio of Revani's nickels to dimes to quarters is 40nickels:40dimes:40quarters.
What is ratioA ratio is a comparison of two or more numbers that indicates their sizes in relation to each other numbers.
The total coin = 120
2/6 of 120coins that are nickels = (2 × 120)/6
2/6 of 120coins that are nickels = 40 nickels
2/6 of 120coins that are dimes = (2 × 120)/6
2/6 of 120coins that are dimes = 40 dimes
since the rest coins are quarters;
the numbers of quarters = 120 - (40nickels +40dimes)
numbers of quarters = (120 - 80)coins
numbers of quarters = 40coins
Therefore, the ratio of nickels to dimes to quarters is 40:40:40 respectively.
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a football team lost the same number of yards on each of three consecutive plays what is the total change in yards from where the team started
Answer:
-3x, where x is the number of yards lost on the first play.
Step-by-step explanation:
The maintenance department of a manufacturing company is a(n)
A. investment center.
B. segment.
C. cost center.
D. profit center.
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The function f ( x ) = x 2 . The graph of g ( x ) is f ( x ) translated to the right 3 units and down 3 units. What is the function rule for g ( x ) ?
The function rule for g(x) is g(x) = (x - 3)² - 3
How to determine the transformation of g(x) from the parent function?From the question, we have the following function
f(x) = x²
Also, we have the following transformation statements:
f(x) is translated to the right 3 unitsf(x) is translated down 3 unitsFirst, we have: f(x) is translated to the right 3 units
This means that
g(x) = f(x - 3)
So, we have
g(x) = (x - 3)²
Next, we have: f(x) is translated down 3 units
This means that
g(x) = f(x - 3) - 3
So, we have
g(x) = (x - 3)² - 3
Hence, the transformation is g(x) = (x - 3)² - 3
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HELP LIKE ASAP
WXY is the image of RST after a translation 3 units up. Select all of the statements that are always true.
options:
_ The length of side TR equals the length of side WX
_ The length of side RS equals the length of side WX
_ The measure of angle R equals the measure of angle W
_ The measure of angle R equals the measure of angle X.
The correct options are: The length of side RS equals the length of side WX and The measure of angle R equals the measure of angle W.
What is translation transformation?A geometry translation is an isometric transformation, meaning that the original figure and the image are congruent.
Given that, WXY is the image of RST after a translation 3 units up.
As we know in translation, both figures are congruent so, we have,
WX = RS
XY = ST
WY = RT
And
∠ R = ∠ W
∠ S = ∠ X
∠ T = ∠ Y
Hence, The correct options are: The length of side RS equals the length of side WX and The measure of angle R equals the measure of angle W.
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y>4x-3
What are three solutions for the inequality?
*Remember solutions are found in the shaded area or on a solid line (points on a dashed line are not a solution).
The three points which correctly represents a solution to the given inequality are;
1. (1, 2)2. (1, 3)3. (1, 4)What are three points which correctly represents a solution to the given inequality?It follows from the task content that the points which are solutions to the given inequality bare to be determined.
Since the given inequality as in the task content is; y > 4 x - 3.
By evaluating the inequality at one x-value of x = 1.
We have ;
y > 4 ( 1 ) - 3
y > 4 - 3
y > 1.
Therefore, the possible values of y which are greater than 1 are; 2, 3, and 4.
On this note, it is correct to conclude that the points which are solutions to the given inequality are; ( 1, 2 ), ( 1, 3 ) and ( 1, 4 ).
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PLEASE HELP 50 POINTS
The trigonometric expression cos 3x / (sin x · cos x) is equivalent by trigonometric formulas to the trigonometric expression csc x · cos 2x - sec x · sin 2x. (Correct choice: A)
How to find an expression equivalent to another trigonometric expressionIn this problem we find the definition of a trigonometric expression, whose equivalent expression must be found by using algebra properties and trigonometric formulas. First, write the trigonometric function:
cos 3x / (sin x · cos x)
Second, use trigonometric formulas:
cos (x + 2x) / (sin x · cos x)
(cos x · cos 2x - sin x · sin 2x) / (sin x · cos x)
cos 2x / sin x - sin 2x / cos x
csc x · cos 2x - sec x · sin 2x
The equivalent trigonometric expression is csc x · cos 2x - sec x · sin 2x.
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