A company wants to have 5 digit phone extensions with the first digit not being zero. How many different phone extensions are possible?
90, 000 will be the total number of different phone extensions.
What are permutation and combination?A permutation is an orderly arrangement of things or numbers. Combinations are a means to choose items or numbers from a collection or set of items without worrying about the items' chronological order.
Given, A company wants to have 5-digit phone extensions with the first digit not being zero.
This problem is an application of the Basic Counting Rule which was discussed above. We want to compute the number of different 5-digit phone extensions.
there are 10 different digits, which are 0,1,2,3,4,5,6,7,8,9. The first digit can't be 0.
There are 9 choices for the first digit. For each choice of the first digit, there are 10 choices for the second digit. For each choice of the first and second digits, there are 10 choices for the third digit, and so on.
According to the Basic Counting Rule, we know that the total number of phone extensions is the product of the number of ways to choose each digit (the product of the 6 above numbers).
the total number of different phone extensions is = 9 *10 *10 *10 *10
therefore, the total number of different phone extensions is = 90,000.
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. . Write all the three-digit numbers between 100 and 160 which are divisible by 2 and not divisible by 4 and divisible by 5 14
18) In the adjoining figure, ABCD is a parallelogram in which DE _|_ AB and DF _|_BC, If AB=6 cm, BC=4.5 cm, DE=3 cm, find the length of DF.
The solution is, EF = 4√3
What is area of a rectangle?Area of a rectangle (A) is the product of its length (l) and width (w).
A= l. w
here, we have,
In rectangle ABCD, AB = 6, BC = 8, and DE = DF.
ΔDEF is one-fourth the area of rectangle ABCD.
We want to determine the length of EF.
First, we can find the area of the rectangle. Since the length AB and width BC measures 6 by 8, the area of the rectangle is:
A = 48 cm^2
The area of the triangle is 1/4 of this. Therefore:
A = 12 cm^2
The area of a triangle is half of its base times its height. The base and height of the triangle is DE and DF. Therefore:
12 = 1/2 * DF *DE
Since DE = DF:
24 = DF^2
Thus:
DF = 2√6 = DE
Since ABCD is a rectangle, ∠D is a right angle. Then by the Pythagorean Theorem:
DF^2 + DE^2 = EF^2
Therefore:
now, Squaring & Adding , we get,
FE^2 = 48
And finally, we can take the square root of both sides:
EF = 4√3
Hence, The solution is, EF = 4√3
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Find the nth term of the sequence. When the first 4 terms are
1st term 2nd term 3rd term 4th term
4.75 10.5 16 21
Answer:
5564+746655754673346
A circular railroad-crossing sign has a diameter of 30 inches.Which measurement is closest to the area of the sign in square inches?
Answer:
706.86
Step-by-step explanation:
The area of the sign will be found with the formula πr^2
r = 15 since the radius is half of the diameter
π(15)^2 = 706.86
Answer:
707 square inches.
Step-by-step explanation:
The area of a circle can be found using the formula A = πr^2, where r is the radius of the circle. The diameter of a circle is equal to twice the radius, so we can find the radius by dividing the diameter by 2.
In this case, the diameter of the circular railroad-crossing sign is 30 inches, so the radius is 30/2 = 15 inches.
So, the area of the sign is A = π * 15^2 = π * 225 = 706.86 square inches.
Rounding to the nearest whole number, the area of the sign is 707 square inches.
Answer the questions below
Two triangles having two pairs of congruent sides and a pair of congruent angles do not necessarily meet the SAS congruence criterion, therefore Angie is incorrect.
What is congruency?The Side-Angle-Side Congruence Theorem (SAS) defines two triangles to be congruent to each other if the included angle and two sides of one is congruent to the included angle and corresponding two sides of the other triangle.
An included angle is found between two sides that are under consideration.
In the image, the triangles are congruent to each other by the Side-Angle-Side Congruence Theorem (SAS).
Thus, two triangles having two pairs of corresponding sides and one pair of corresponding angles that are congruent to each other is not enough justification for proving that the two triangles are congruent based on the SAS Congruence Theorem.
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Ashely has $450 in her savings account. She plans to deposit $25 each week. Tanner has $200 in his savings account, and plans to deposit $40 each week. Complete the equation to find w, the number of weeks until Ashely and Tanner have the same amount in their savings accounts.
___ + 450 = ____ + 200
The completion of the equation to find w, the number of weeks until Ashely and Tanner have the same amount in their savings accounts is 25w + 450 = 40w + 200.
What is an equation?An equation is a mathematical statement claiming that two or more mathematical expressions are equivalent or equal.
Equations are depicted with the equation symbol (=) to show equality of the expressions.
Ashely Tanner
Savings $450 $200
Planned weekly deposits $25 $40
Let the number of weeks to save equal amounts = w
Equations:Ashely's total savings in w weeks = 25w + 450 ... Equation 1
Tanner's total savings in w weeks = 40w + 200 ... Equation 2
For the two friends to have an equal amount, Equation 1 must equal Equation 2:
25w + 450 = 40w + 200
-15w = -250
w = 16.67
Thus, for Ashely's and Tanner's savings to become equal in amount, it would take 16.67 weeks.
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Find n if (n + 1)! = 16n! + 16(n-1)!
Step-by-step explanation:
(n+1)! = (n+1)n(n-1)(n-2)...×3×2
16n! = 16n(n-1)(n-2)...×3×2
16(n-1)! = 16(n-1)(n-2)...×3×2
we can now divide both sides by (n-1)! and get
(n+1)n = 16n + 16
n² + n = 16n + 16
n² - 15n - 16 = 0
1×n² - 15n - 16 = 0
we try to bring this into a form
(n + a)(n - b)
one factor has to contain "-", because we have "-16".
and because -15 = 1 - 16, we see that
a = 1
b = 16
n² - 15n - 16 = (n + 1)(n - 16)
and that is 0, when at least one of the factors is 0, because 0×... = 0.
so, the solutions are
n = -1
n = 16
n = -1 does not make any sense for n!
so, n = 16 is the solution.
Given quadrilateral DEFG with vertices
D(-9,-5), E(5,4), F(-6,-2), and G(4,2).
Determine the coordinates of the image of
DEFG after being reflected about the origin.
The coordinates of the image of quadrilateral DEFG after being reflected about the origin include the following:
D' = (9, 5).
E' = (-5, -4).
F' = (6, 2).
G' = (-4, -2).
What is a reflection?In Geometry, a reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.
Generally speaking, reflecting a point about the origin is a a type of transformation which causes both the x-coordinate and the y-coordinate to become negated (the signs are changed);
(x, y) → (-x, -y)
Ordered pair D = (-9, -5) → Ordered pair D' = (9, 5).
Ordered pair E = (5, 4) → Ordered pair E' = (-5, -4).
Ordered pair F = (-6, -2) → Ordered pair F' = (6, 2).
Ordered pair G = (4, 2) → Ordered pair G' = (-4, -2).
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Independent practice 5.how many 1 • 1/6
Determine by trigonometry the magnitude of the force P so that the resultant force exerted on the stake is vertical. (Round the final answer to a single decimal place.)The magnitude of the force is N.
by trigonometry the magnitude of the force P so that the resultant force exerted on the stake is vertical. The magnitude of the force is 196.6 N.
What is resultant force?When a force system acts on an item, the difference between the forces is referred to as the Resultant force. When an item is under the influence of two or more forces, the combined force may be calculated by adding up the separate forces. The forces in all directions will be the same for all the forces if they are all acting in the same direction. The SI unit for resultant force is the Newton.
Given that,
α = 30°
Using the triangle rule, and the law of sines:
120 N / Sin 30° = P / Sin 25°
or, P = (Sin 25° / Sin 30°) × 120
or, P = 101.428 N
or, P = 101.4 N
and also, θ = 180 - 25 - 30
θ = 125°
the value of resultant is:
120 N / Sin 30° = R / Sin 25°
or, R = 196.6 N
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1-
Use the price-demand function below, to answer parts (A) and (B).
p(x)=75-3x
1≤x≤20
(A) What is the revenue function?
R(x) =
What is the domain of the revenue function?
(B) complete table
X R(x)
1 72
4
8
12
16
20
The revenue function (Rx) when x is 1, 4, 8, 12,16, 20 are 72,252,468,432, and 300 respectively.
What is revenue function?Revenue function is a formula or equation representing the way in which particular items of income behave when plotted on a graph. For example, the most common revenue function is that for total revenue in the equation y = bx, where y is the total revenue, b is the selling price per unit of sales, and x is the number of units sold.
R(x) = x × P(x)
When x = 1
R(x) = 1(75-3)
R(x) = 72
when x = 4
R(x) = 4( 75-12)
= 252
when x = 12
R(x) = 12(75-36)
R(x) = 468
when x = 16
R(x) = 16( 75-48)
= 432
when x = 20
R(x) = 20( 75-60)
= 300
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Each ounce of a substance A supplies 3% of the nutrition a patient needs. Substance B supplies 10% of the required nutrition per ounce, and substance C supplies 15% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal amounts, and the amount of substance B be1 1/5
of either of these other amounts, find the number of ounces of each substance that should be in the meal to provide 100% of the required nutrition.
Incorrect: Your answer is incorrect.
______oz of substance A
______oz of substance B
______oz of substance C
Answer:
x = 17.2 oz of substance A and C
x = 3.7 oz of substance B
Step-by-step explanation:
This is a word problem in mathematical optimization, which involves finding the values that maximize or minimize some objective function. To solve this problem, we need to find the optimal number of ounces of each substance to provide 100% of the required nutrition.
Let x be the number of ounces of substance A and C. Then the amount of substance B is 1 1/5 times either of these, or 1 1/5 x.
Since each ounce of substance A supplies 3% of the nutrition, the total contribution from A is 3x%. Similarly, the total contribution from B is 10 * 1 1/5 x = 11 x/5% and from C is 15x%.
The objective is to find x such that the total contribution from all three substances is 100%, or 3x + 11 x/5 + 15x = 100.
Solving for x, we have
29x/5 = 100
x = 100 * 5 / 29 = 17.24 oz
So, 17.24 oz of substance A and C, and 1 1/5 * 17.24 oz = 3.65 oz of substance B should be in the meal. Rounding to the nearest tenth, we have:
x = 17.2 oz of substance A and C
x = 3.7 oz of substance B
✓ Completed Question Help A nursery owner buys 7 panes of glass to fix some damage to her greenhouse. The 7 panes cost $20.65. Unfortunately, she breaks 2 more panes while repairing the damage. What is the cost of another 2 panes of glass? 2.1.PS-10
Answer: $ 5.90 is the the cost of 2 panes of glass
In order to solve this we must divide the number of panes, by the cost spent on the panes. 20.65 divided by 7 is 2.95. This means that each pane is $ 2.95. If there are two panes that were also broken, we have to add 2.95 twice, which is $5.90. This means that the nursey owner must spend another $5.90 on two panes.
I hope this helps & Good Luck <3 !!!
Find the equation of the line with z-intercept (-1,0) and y-intercept (0, -3).
y =
The line's equation is y = 3x - 3 with the z-intercept (-1, 0) and the y-intercept (0, -3).
What does "intercept" signify in mathematics?What do intercepts mean? The x-intercept and y-intercept are the points at which a line crosses the x- and y-axes, respectively.
Put x = 0 and work out y to determine the y-intercept. The purpose will be (0, y). Set y = 0 and solve for x to determine the x-intercept. The purpose will be (x, 0).
What does intercept form mean exactly?It gives both a slope and an intercept, hence the name "slope intercept form." Thus, this is your slope. You can move by keeping in mind that slope is rise over run.
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How many solutions does this linear system have?
y = 2/3 x + 2 + 2
6x – 4y = –10
hey, I checked on desmos, which is a calculator for this type of stuff, and got 1.8,5.2. So I think that's one solution. Sorry if wrong.
A 14-inch-wide conveyor unloads 4000 bushels of wheat per hour. At this speed, how many bushels per hour will an 21-inch-wide conveyor unload?
An 21-inch-wide conveyor would unload
Answer:
6000 bushels per hour.
Step-by-step explanation:
Let's assume that the rate at which the conveyor unloads wheat is proportional to its width.
If a 14-inch conveyor unloads 4000 bushels per hour, we can write this as:
Rate = 4000 bushels/hour * (Width of conveyor) / 14 inches
Now, if we want to find the rate at which an 21-inch conveyor would unload wheat, we can simply plug in the width into the equation:
Rate = 4000 bushels/hour * (21 inches) / 14 inches
Rate = 6000 bushels/hour
Therefore, an 21-inch-wide conveyor would unload 6000 bushels per hour.
Here is an equation: 4x-4=4x+____. Fill in the blanks to make the following statements true. Fill in the blanks to make the following statements true. True for one value of x.
It is not possible to make the statement true for one value of x, as the two linear functions have the same slope.
What is a linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
In which:
The slope m represents the rate of change of the linear function.The intercept b represents the initial amount.The number of solutions for a system of two linear functions is defined as follows:
Zero solutions: same slope and different intercept.One solution: different slopes.Infinite solutions: same slope and same intercept.The functions for this problem are defined as follows:
4x - 4.4x + b.As the two functions have the same slope, there are two possible number of solutions.
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If a Ferris wheel makes 1 full revolution every 12 minutes, what is its angular speed?
Answer:
0.5236 radians per minute
or
0.00872665 radians per second
Step-by-step explanation:
Let's first define angular speed
Angular speed is the rate at which an object changes it angles which we measure in radians in a given time. Angular speed has a magnitude (a value only whereas velocity is a vector with speed and direction)
The angular speed, ω of an object is given by the formula
ω = θ/t
where θ is the angle in radians
1 full revolution is 360° or 2π radians
t = time taken for completing θ radians of rotation
We are given that the Ferris wheel completes 1 full revolution in 12 minutes
1 full revolution = 2π radians
t = 12 minutes
Angular speed = ω = θ/t = 2π/12 radians/minute
ω = 0.5236 radians per minute
or in radians per second
ω = 0.5236/60 = 0.00872665 radians per second
A proportional relationship between x and y exists whose slope is 2/3. Write the equation of this relationship in terms of x and y.
Answer:
The equation of the proportional relationship can be written as y = (2/3)x.
Step-by-step explanation:
This equation is derived by using the fact that the slope of the relationship between x and y is 2/3. The slope of a line can be expressed as the ratio of the change in y to the change in x, which is represented by (delta y) / (delta x).
Since the slope is 2/3, the change in y for a unit change in x can be expressed as 2/3 * x. This relationship can then be written in terms of x and y by solving for y:
y = (2/3) * x.
In this equation, y is directly proportional to x with a constant of proportionality equal to 2/3.
6. Which quadrant is the pre-image located in?
B
Quadrant III
Quadrant I
O Quadrant II
O Quadrant IV
9
A
Therefore , the solution of the given problem of data plotting comes out to be Pre image is located in II quadrant.
What is data plotting?Graphing the correlation between two additional variables is the most common way to use a chart to present data. It is also permitted to use hand-drawn or digitally generated diagrams. Go three pieces up and 2 types to the right starting at the origin. Displaying the numbers for rows 2, 3, and 4 on the standard system is crucial. Make sure to be very clear in what you say.
Here,
Given :
A figure having pre image and post image ,
We have to find in which quadrant the pre image is located,
So,
In order to find that,
We see the image are in quadrant II and quadrant III
Since ,
After II quadrant III quadrant comes,
Thus , Pre image is located in II quadrant.
Therefore , the solution of the given problem of data plotting comes out to be Pre image is located in II quadrant.
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Tanya decided to lease a car.
the lease includes a money factor of 0.00324.
What interest rate is shawna being charged in her lease? ( round to the nearest hundredth).
A. 0.78%
B. 7.78%
C. 1.35%
D. 13.5%
A correct answer is option (B) 7.78%. so, the interest rate is 7.78% being charged in her lease.
What is the interest rate?
Interest rate is the amount charged over and above the principal amount by the lender from the borrower. In terms of the receiver, a person who deposits money to any bank or financial institution also earns additional income considering the time value of money, termed as interest received by the depositor.
The interest rate in a lease can be calculated using the money factor, which is essentially a type of interest rate used in auto leasing.
To calculate the interest rate from the money factor, multiply the money factor by 2400.
In this case, the money factor is 0.00324, so the interest rate would be:
0.00324 * 2400 = 7.776%
Therefore, the correct answer is option (B) 7.78%. so, the interest rate is 7.78% being charged in her lease.
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A correct answer is option (B) 7.78%. so, the interest rate is 7.78% being charged in her lease.
Which interest rate is it?The amount that the lender charges the borrower over and beyond the principal amount is referred to as the interest rate. A person who deposits money in a bank or other financial institution also earns additional income in terms of the recipient, known as interest, taking into account the time value of money.
The money factor, which is essentially a sort of interest rate utilized in auto leasing, can be used to compute the interest rate in a lease.
By multiplying it by 2400, you can determine the interest rate from the money element.
Given that the money component in this situation is 0.00324, the interest rate would be:
The result of three consecutive conversions from an interest rate to a money factor is 2400 (1/2 × 1/12 × 1/100). 6/2400 = 0.0025 money factor, which can be multiplied by the entire amount borrowed to see how much the monthly interest would be roughly.
(1/2 × 1/12 × 1/100). 6/2400 = 0.0025
0.00324 × 2400 = 7.776%
Therefore, the correct answer is option (B) 7.78%. so, the interest rate is 7.78% being charged in her lease.
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PLEASE HELP!! .1.PS-8 A package of 6 pairs of insulated gloves costs $43.74. What is the unit price of the pairs of gloves?
Answer:
Step-by-step explanation:
divide $43.74 by 6 = 7.29 per pair
A tree planted today had a height of 5 feet and grows one foot each month is the height of the tree a function of the number of months?if so is it a linear or nonlinear function
linear function
x=5+n
given:
height of tree = 5ft
growth per month = 1ft
Find:
equation:
Computation:
asume:
New height of x
number of month = n
x=5+1(n)
x=5+n
hope this helped.
Sort the terms into groups of "like terms."
The terms, when sorted into groups of " like terms " gives:
Like terms :
- 7 y ² and y ²0. 5 kt and - 10 kt6 and 9Unlike terms :
- 4 p and p ²5 x and 5 3 ad and 2 bd Which terms are like and unlike terms ?To sort a set of algebraic terms into groups of like terms, you must look for terms that have identical variables and exponents. These terms can be combined and simplified using the rules of addition and subtraction. in this scenario, they include: - 7 y ² and y ², 0. 5 kt and - 10 kt, 6 and 9.
Terms that have different variables or exponents are considered unlike terms and cannot be combined in this way. They include : - 4 p and p ², 5 x and 5, 3 ad and 2 bd .
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5. Which of the following expressions is the
factored form of 10x - 25 using the greatest
common factor?
A. 5(2x - 5)
B. 5(x - 5)
C. 10(x-2.5)
D. 5(2x-20)
Step-by-step explanation:
The expression that is the factored form of 10x - 25 using the greatest common factor is option A: 5(2x - 5).
To factor the expression, we need to find the greatest common factor of the terms, which in this case is 5. We then write the expression as a product of 5 and a second expression with the remaining terms:
10x - 25 = 5 * (2x - 5)
So, option A is the correct answer.
Diego measures the pulse rate of some of his friends. What is the
modal class of pulse rates? Please help
Answer:
modal class is 70 - 79
Step-by-step explanation:
the modal class is the interval which occurs most often
in this case 70 - 79 occurs 6 times
then modal class is 70 - 79
Jeff created the following shape to fill with skittles. He also wants to decorate the outside with Skittle wrappers. Find the surface area to determine the number of skittle wrappers he would need to save and volume to determine how the amount of Skittles he could fill it with
The Surface area of Figure is 496 ft².
The Volume of Figure is 608 ft³.
What is Surface area?A 3D object's surface area is the entire area that all of its faces cover. For instance, the surface area of a cube is its surface area if we need to determine how much paint is needed to paint it. It is consistently expressed in square units.
Given:
Surface Area of Pyramid
= Base area + 1/2 x P x l
= 64 + 1/2 x 32 x 3
= 64 + 16 x 3
= 112 ft²
and, Volume of Pyramid
= 1/2 x 64 x 3
= 96 ft³
So, total Surface Area
= 112 + 384
= 496 ft²
and, The total volume
= 96 + 512
= 608 ft³
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find the surface area
Answer: 1468.17
Step-by-step explanation:
Find the measure of
Answer:
C = 5x+6
Step-by-step explanation:
one of the properties of triangle is the supplemental angle of B = sum of the other 2 angles
so 11x+1=6x-5+c
C = 5x+6