(2/5)x2x100 divided by 2/3 +(2x4 divide by (13-5)

Answer:

The 480 chairs were all finished by the employees in 4 days while maintaining a steady pace.

Time and work deals with the time taken by an individual or a group of individuals to complete a piece of work and the efficiency of the work done by each of them.

Work Done = Time Taken × Rate of Work.

Rate of Work = 1 / Time Taken.

Time Taken = 1 / Rate of Work.

If a piece of work is done in x number of days, then the work done in one day = 1/x.

Total Work Done = Number of Days × Efficiency.

Here,

Total number of chairs=480

Chairs left to work on=120

It took them 3 days to install 360 chairs which means if they were working at a constant rate they got 120 chairs installed daily.

With 120 chairs left that means in 1 days they will finish.

So overall, it took the workers 4 days to finish.

The workers took 4 days to complete all the 480 chairs from start to finish at a constant rate.

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To calculate the distance between the points -5, -3 and -5, -6. We apply the following formula:

(x₁, y₁) and (x₂, y₂)   d = √(x₂ - x₁)² + (y₂ - y₁)²

The points are:

 (x₁ = -5, y₁ = -3) and (x₂= -5, y₂= -6)

We apply the above formula and solve.

The distance between the points -5, -3 and -5, -6 is 3.

Answer:

idek

Step-by-step explanation:

Answer:8.44

Step-by-step explanation:

Area of the circle is 56.

Divide 56 by 3.14(Pi)

56/3.14=17.8343949

Square root it

Square root of 17.8343949=4.223078841

4.22 is the radius so to find the diameter you just multiple by 2.

4.223078841x2=8.446157683

Sam has 7/8 m of rope left.

What is fraction ?

Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many components of a particular size there are when stated in ordinary English.

In mathematics, a fraction is used to denote a portion or component of the whole. It stands for the proportionate pieces of the whole. Numerator and denominator are the two components that make up a fraction. The numerator is the number at the top, and the denominator is the number at the bottom.

To derive a solution, you have to subtract the meter of rope that Sam has from the meter of rope he cut for a project.  

Therefore,

1½ - 5/8,  

Since the meter of rope Sam had is represent with a mixed fraction, we have to convert it to an improper fraction, and therefore 1½ can also be written as 3/2

Therefore, we have

3/2 – 5/8

To solve this fraction, you need to find the smallest number that can divide the denominator (2 and 8), which is 8.  

Now divide the denominators with 8 and multiply the answers you get by the numerators.

Therefore, we have

3/2 -5/8

= 12/8 – 5/8

= 7/8 m.

Therefore, Sam has 7/8 m of rope left.

The smallest number used to divide the denominators is also known as the lowest common denominator (LCD).

A fraction has 2 parts, which are numerator and denominator. The numerator is the number at the top in a fraction while the denominator is the number below in a fraction.  

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After 7 years  the laptop computer will be worth $200 or less.

In this question, we have been given a laptop computer is purchased for $1500 . Each year, its value is 75%  of its value the year before.

We need to find the number of years when laptop computer be worth $200  or less.

We can see that given situation represents exponential decay function with initial value 1500, decay rate = 0.75 and the final value = 200

We need to find period t.

For given situation we get an exponential function as,

1500 * (0.75)^t ≤  200

(0.75)^t  ≤ 2/15

t * ln(0.75) ≤ ln(2/15)

t * (-0.2877) ≤ -2.0149

t ≥ (-2.0149)/(-0.2877)

t ≥ 7

Therefore, the laptop computer will be worth $200 or less after 7 years.

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Answer:

Hi i'm wondering how to find the answer the answer is 3 over 2 (2k-8) > 1 over 3(k-9)

The three (3) statements which are true include the following:

A. The radius of the circle is 3 units.

B. The center of the circle lies on the x-axis.

D. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

Mathematically, the standard form of the equation of a circle is represented by this mathematical expression;

(x - h)² + (y - k)² = r²   ....equation 1.

Where:

h and k represents the coordinates at the center of a circle.

r represents the radius of a circle.

From the information provided, we have the following equation of a circle:

x² + y² – 2x – 8 = 0      ......equation 2.

In order to determine the true statements, we would rewrite the equation in standard form and then factorize by using completing the square method:

x² – 2x + y² = 8 = 0

x² – 2x + (2/2)² + y² = 8 + (2/2)²

x² – 2x + 1 + y² = 8 + 1

(x – 1)² + (y - 0)² = 9         .......equation 3.

Comparing equation 1 and equation 3, we have the following:

Center (h, k) = (1, 0)

Radius, r = 3

Additionally, this line and the circle's center lies on the x-axis because the y-value is equal to zero (0).

(x – 0)² + (y - 0)² = 3²

x² + y² = 9.

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Answer:

M=960

F=480

Step-by-step explanation:

look at the work I did

Answer:

1. 7.5

2. 0.75

3. 0.075

4. 0.375

Step-by-step explanation:

Yw, and have a good day to everyone who reads this <3 :)

Both Anorexia and Bulimia the rate of occurrence is high in females as compare to males so the choice is female to male ratio is 12  to 1.

Therefore, the rate of occurrence in females is much more than the males. Correct option is 12 to 1.

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Answer:

He has $185 left

Step-by-step explanation:

Subtract $220 from how much he spent

In linear equation, 3 t is the maximum possible weight .

What in mathematics is a linear equation?

A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.

                                  Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.

Assuming x to be lightest , y median and z the heaviest.

So according to given information average is 7 so total sum for three box = 21

thus x+y+z = 21

Given y=9 (median weight)

thus x+z = 12

For maximum possible value for x is 3 such that z= 9

if x=4 then Z= 8(this changes median to 8)

So maximum possible value for lightest box is 3

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you need to show the problem

In older adults, a higher level of social support is related to question is D. a lower probability of depression.

Depression is a prevalent mental illness. According to estimates, the disorder affects 5% of adults worldwide. Consistent sadness and a lack of interest in previously fulfilling or enjoyable activities are its defining traits. Additionally, it may impair appetite and sleep. Concentration problems and fatigue are frequent.

A severe mental illness called major depressive disorder has an impact on how people feel, think, and carry out their daily activities. The condition may also affect a person's ability to enjoy life, appetite, and sleep patterns. When there's social support, people are happier and this reduce depression.

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True , statistical measures that communicate the most information should be used with scales that contain the most information.

Given :

statistical measures that communicate the most information should be used with scales that contain the most information. true  or false .

we know that ,

What is statistical measures ?

The mean, median, mode, percentiles, range, variance, and standard deviation are the most commonly used numerical measures for quantitative data.

So the statistical measures that must communicate the most information should be used with scales that contain the most information for knowing the details of the given data .

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Answer:

distance ≈ 5.66 units

Step-by-step explanation:

calculate the distance d using the distance formula

d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = N (- 5, 7 ) and (x₂, y₂ ) = P (- 1, 3 )

d = [tex]\sqrt{(-1-(-5))^2+(3-7)^2}[/tex]

  = [tex]\sqrt{(-1+5)^2+(-4)^2}[/tex]

  = [tex]\sqrt{4^2+16}[/tex]

  = [tex]\sqrt{16+16}[/tex]

  = [tex]\sqrt{32}[/tex]

  ≈ 5.66 units ( to the nearest hundredth )

Sarah completed reading for x = 18 minutes.

Area is the total amount of space that an object's shape or a flat (2-D) surface occupy.

Create a square on paper by using a pencil. Two dimensions make it up. A shape's area on paper is the space it takes up.

Imagine that your square is made up of smaller unit squares.

The area of a figure is equal to the number of unit squares required to completely cover the surface area of a particular 2-D shape. Square cms, square feet, square inches, square meters, etc. are a few common units for measuring area.

To get the area of the square figures presented below, draw unit squares with 1-centimeter sides. Therefore, the shape will be measured.

According to our question

The number of pages Sarah will read in an hour is x. (this is "pages per hour" rate).

(10 minutes) / (3 pages) = (x pages) / (60 minutes)

cross-multiply:

10x = 3*60

x = 18

Hence, Sarah completed reading for x = 18 minutes.

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Chord AC is the nearest to the center because the perpendicular distance of chord AC from center O is the smallest.

What is a chord of a circle?

A chord of a circle is a straight line segment whose endpoints both lie on a circular arc. The infinite line extension of a chord is a secant line or just secant. More generally, a chord is a line segment joining two points on any curve, for instance, an ellipse.

ΔABC is inscribed in O. If AB = 5, BC = 8, and AC =9.

Now if you look carefully at the given diagram, we can see that the perpendicular distance of chord AC from center O will be smaller than the perpendicular distance of chord AB from center O and the perpendicular distance of chord BC from center O.

Hence, Chord AC is the nearest to the center because the perpendicular distance of chord AC from center O is the smallest.

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The expression for 60 decreased by twice Jenny's score 60 - 2x.

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations. As an illustration, the expression x + y has the terms x and y with an addition operator between them.

Let Jenny's score be x.

Twice Jenny's score will be 2x.

Therefore, the expression will be:

= 60 - 2x

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In order to build a cube with an edge length of b inches, b3 cubes with 1-inch edges are required.

A cube is a three-dimensional object with six square faces that are all the same size and form in mathematics. A cube has perpendicular sides and is symmetrical along all three axes. Finding the area of one of a cube's faces and increasing it to the third power yields the volume of the object. V=s3, where s denotes one of the cube's sides, is the formula for calculating a cube's volume. Cubes are frequently used in geometry and algebra, and they have a wide range of real-world uses, including volume measurement and the solution of mathematical equations.

How to solve?

The volume of a cube with an edge length of b inches is b3 cubic inches. For instance, if b=3, we would require 33=27 cubes with 1 inch-long edges, and the volume of a cube with a three inches edge would be 33=27 cubic inches.

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Answer: 113 bananas

Step-by-step explanation:

The ratio is 6:19, with 6 papayas for every 19 bananas.

We have 36 papayas, which is 6 times, so we just need to get 19 times 6 = 113 bananas

Answer: y = -2x + 5

Step-by-step explanation: I think it's the same one...

The required compound interest is $5,510.03

What is compound interest?

Compound interest is the interest imposed on a loan or deposit amount. It is the most commonly used concept in our daily existence. The compound interest for an amount depends on both Principal and interest gained over periods.

Given, Principal = $9,000

Time = 4 years

Interest = 12% = 0.12

For compounded monthly, n = 12

The compound amount for monthly compounded is given by

[tex]A = P(1 + \frac{r}{n} )^{nt}[/tex]

or, A = [tex]9000(1 + \frac{0.12}{12} )^{12*4}[/tex]

or, A = 9000[tex](1+0.01)^{48}[/tex]

A = $14510.03

Compound interest = $14510.03 - $9,000 = $5,510.03

Hence, the required compound interest is $5,510.03

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Answer:

Yes, you take the average value of the two numbers in the middle.

Step-by-step explanation:

Since there are TWO middle values, you always put 2 as a denominator.

The sum of two successive odd integers must be at least 16, hence the inequality will be x+1≥4 and the solution will be x≥3.

In mathematics, "inequality" refers to a relationship between two expressions or values that is not equal to each other. The equation-like form of the formula 5x 4 > 2x + 3 has an arrowhead in place of the equals sign. It is an illustration of inequity. This shows that the left half, 5x 4, is bigger than the right part, 2x + 3. An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made.

Here,

Sum of 2 consecutive odd integer=16

Let them be 2x+1 and 2x+3,

2x+1+2x+3≥16

4x+4≥16

x+1≥4

x≥3

The inequality will be x+1≥4 and solution to the inequality will be x≥3 as sum of two consecutive odd integers is at least 16.

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To find the 3 smallest positive x-intercepts of the graph of y = cos(12x) + cos(16x), you can use the following steps:

Set y equal to 0 and solve for x to find the x-intercepts of the graph.

Since the graph of y = cos(12x) + cos(16x) is periodic with period 2π/12 = π/6 and 2π/16 = π/8, respectively, you only need to consider x-intercepts in the interval [0,π/6).

Use the identity cos(a+b) = cos(a)cos(b) - sin(a)sin(b) to rewrite the equation y = cos(12x) + cos(16x) as:

y = 2cos(4x)cos(8x) - sin(4x)sin(8x)

Set y equal to 0 and solve for x to find the x-intercepts. This will give you the x-coordinates of all the x-intercepts of the graph.

Sort the x-coordinates in increasing order and take the first three smallest positive values to find the 3 smallest positive x-intercepts.

For example, if you set y equal to 0 and solve for x, you get:

0 = 2cos(4x)cos(8x) - sin(4x)sin(8x)

This equation can be rewritten as:

cos(4x)cos(8x) = sin(4x)sin(8x)

Using the identity cos(a) = sin(π/2 - a) and substituting this into the equation above, we get:

sin(4x)sin(8x) = sin(4x + π/2)sin(8x)

This equation simplifies to:

sin(4x)sin(8x) = sin(4x)cos(8x)

Dividing both sides by sin(4x) and rearranging, we get:

sin(8x) = cos(8x)

This equation holds for all values of x that satisfy sin(8x) = cos(8x), so we can find the x-intercepts by setting these two functions equal to each other and solving for x:

sin(8x) = cos(8x)

sin^2(8x) = cos^2(8x)

sin^2(8x) - cos^2(8x) = 0

1 - cos(16x) = 0

cos(16x) = 1

Thus, the x-intercepts of the graph are at x = 0, x = π/16, x = π/8, x = 3π/16, and so on. Since we are only interested in the 3 smallest positive x-intercepts, we can take the first three values in this list: x = 0, x = π/16, and x = π/8.

Therefore, the 3 smallest positive x-intercepts of the graph of y = cos(12x) + cos(16x) are [0, π/16, π/8].

The probabilities are P(X = 2) = 0.14 and P(X ≥ 2) = 0.30

The mean and the standard deviation are 0.96 and 0.90

P(x = 2)

From the question, we have the following parameters that can be used in our computation:

X       0         1         2       3

P(X)   0.12    0.20   0.14  0.16

From the above table, we have

P(X = 2) = 0.14

P(x ≥  2)

From the question, we have the following parameters that can be used in our computation:

X       0         1         2       3

P(X)   0.12    0.20   0.14  0.16

From the above table, we have

P(X ≥ 2) = P(2) + P(3)

Substitute the known values in the above equation, so, we have the following representation

P(X ≥ 2) = 0.14 + 0.16

Evaluate the sum

P(X ≥ 2) = 0.30

The mean is calculated as

μx = sum of the products of x and P(x)

So, we have

μx = 0 * 0.12 + 1 *0.20 + 2 * 0.14 + 3 * 0.16

Evaluate

μx = 0.96

The standard deviation is calculated as

ox = the square root of sum of the products of x and P(x) * (1 - P(x)

So, we have

ox = √[(0 * 0.12 * 0.88) + (1 * 0.20 * 0.80) + (2 * 0.14 * 0.86) + (3 * 0.16 * 0.84)]

Evaluate

ox = 0.90

Hence, the standard deviation is 0.90

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