Encuentra el perímetro de la circunferencia cuyo diámetro es de 6 cm

Answer:

C

Step-by-step explanation:

The number of silver coins Lily initially had is 28.

A ratio is described as a comparing two quantities with the same unit to determine the amount of each quantity is existent in the other. Ratios are divided into two types.

Now according to the question;

Let 'x' be the share of silver coin of Lily.

Let 'y' be the share of silver coin of Nada.

Lily and Nada share silver coins in the ratio 7:3

Thus, x/y = 7/3

Cross-multiplying

3x = 7y (equation 1)

Now, if Lily gives 3 silver coins to Nada, the ratio becomes 5:3.

(x - 3)/(y + 3) = 5/3

cross multiplying;

3x - 9 = 5y + 15

Simplifying;

3x  = 5y + 24 (equation 2)

Comparing equation 1 and 2.

7y = 5y + 24

2y = 24

y = 12 (Nada's share)

Substitute the value of y in equation 1;

3x = 7y

3x = 7×12

x = 28

Therefore, the initial share if Lily was 28.

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Answer:

F

Step-by-step explanation:

The median is always the letter in the middle

Answer

A 7/10

Step-by-step explanation:

if you make it even, you double the 4/5 to make it a 8/10, if you every have a number that is like 4/6-2/18, you triple the 4 to make 12, and triple the 6 to make it 18. so you now have 12/18-2/18=10

So 8/10-1/10=7/10

The study described is a retrospective study.

A retrospective study, also known as a historical study, involves the collection and analysis of data from past events or behaviors. In this case, the study involves collecting and analyzing data on the different types of shoe designs by the designer Calvin Klein over the years from 1987 to 2014. The data has already been collected in the past, and the researcher is analyzing it to draw conclusions or make inferences about the shoe designs.

In contrast, a cross-sectional study involves the collection of data from a population at a specific point in time, while a prospective study (also known as a longitudinal study) involves the collection of data over a period of time to observe changes or trends in a population. An experiment involves the manipulation of one or more variables to observe their effect on a dependent variable, with the aim of establishing cause-and-effect relationships.

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Answer:

after simplifying, we get,

23/6

Step-by-step explanation:

(2/3+5/2-7/3)+(3/2+7/3-5/6)

We simplify,

\((2/3+5/2-7/3)+(3/2+7/3-5/6)\\(2/3-7/3+5/2)+(3/2+7/3-5/6)\\(5/2-5/3)+(9/6+14/6-5/6)\\(15/6-10/6)+((9+14-5)/6)\\(15-10)/6+(23-5)/6\\5/6+18/6\\(5+18)/6\\23/6\)

Answer:

16 ounces = 1 pint, 8 times 2 = 16

Step-by-step explanation:

Answer in explanation:

1 pint is 16 ounces so he could make 2 batches of lemonade with 1 pint of lemon juice.

(8 x 2 = 16

your answer is 2

Hope this helps!

Answer:

is. there. a. picture

Step-by-step explanation:

Answer:

The 3rd choice you gave.

Step-by-step explanation:

A unit price has to have 1 in the denominator. So the 3rd choice is correct

I hope this helped! Sorry for answering so late

Answer:

The answer is (C)

Step-by-step explanation:

hope this helps :)

Using proportions, it is found that Tyler's thinking in incorrect, as dividing both numbers by 10, 20,010 has 2001 tens and 10,020 has 1002 tens.

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

To find out how many tens are in a number, we divide it by 10, hence:

Tyler's thinking in incorrect, as dividing both numbers by 10, 20,010 has 2001 tens and 10,020 has 1002 tens.

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Answer:

2.6

Step-by-step explanation:

Metropolis gets 5.8 inches of rain in October

4.2 inches of rain is seen in November

Therefore the amount that would be seen in December can be calculated as follows

= 5.8-4.2

= 1.6

4.2-1.6

= 2.6

Hence 2.6 inches of rain would be seen in December

Answer:

choice 1) 312 cm²

Step-by-step explanation:

area = (16 x 12) + (10 x 12) = 312 cm²

Answer:

312

Step-by-step explanation:

triangle：

10x12/2=60

two triangle：

60x2=120

rectangle：

16x12=192

add up：

120+192=312

Let's go through each answer.

A.

Answer: The amount left over was 4.05 L.

Estimation: 3.15 + 4.75 is about 7.

7 L – 4 L = 3 L

The amount left over was about 3 L.

This is incorrect because 3.15+4.75 is closer to 8 than 7.

B.

Answer: The amount left over was 3.95 L.

Estimation: 3.15 + 4.75 is about 8.

8 L – 4 L = 4 L

The amount left over was a little less than 4 L.

This is correct because 3.15+4.75 is close to 8 and to find the amount left over you do have to subtract.

The correct answer is B.

Answer: The amount left over was 3.95 L.

Estimation: 3.15 + 4.75 is about 8.

8 L – 4 L = 4 L

The amount left over was a little less than 4 L.

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Answer:

$25,480

Step-by-step explanation:

9% of 28,000 is 2,520. "Depreciates" means we must subtract. When we subtract this number from the initial value of the car which is 28,000 we get 25,480, which would be how much the car is worth after one year.

hope this helps!

So there's 2 types of depreciation you often will come across, one is compound and one is simple.

For compound : A=P(1-i)^n

For simple A=P(1-in)

NOTE: A is amount after depreciation, P is amount before depreciation, n is number of years and i is the rate of depreciation.

Now if your depreciation is compound then:

A=P(1-i)^n

A=28000(1- 0.09)^1

A= 25480

If it's simple depreciation

A=P(1-in)

A= 28000(1- 0.09x1)

A= 25480

Now these are your solutions

The linear factors of f(x) are: f(x) = (x+8)(4x-7)(x+17/8)

If -8 is a zero of the polynomial f(x), then (x+8) is a factor of f(x) by the Factor Theorem. We can use polynomial long division or synthetic division to find the other factor(s).

Using synthetic division:

-8  |  4   15   -121   120

   |_____-32____ 1280__

     4   -17    -193   1500

The result of synthetic division shows that the quotient is 4x^2 - 17x - 193, and the remainder is 1500. This means that:

f(x) = (x+8)(4x^2 - 17x - 193)

We can now factor the quadratic factor by using the quadratic formula or factoring by grouping:

4x^2 - 17x - 193 = 0

x = [17 ± sqrt(17^2 - 4(4)(-193))]/(2(4))

x = [17 ± sqrt(6569)]/8

x = [17 ± 81]/8

x = 14/8 or x = -17/8

The solutions are x = 7/4 and x = -17/8.

Therefore, the linear factors of f(x) are:

f(x) = (x+8)(4x-7)(x+17/8)

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Answer: It is proportional because 195/3 equals 65 and 325/5 equals 65 as well, so it is proportional.

Hope this helps! :)

There are 4265526.78 milliliters in a pint

For us to have accuracy and avoid confusion in measurement, we need to convert one unit to another. For instance, we do not measure the length of a pencil in kilometres. In such a case, one has to convert kilometre (km) to centimetre (cm). For example 1000m makes 1km and 100cm makes 1meter

Since 946946946 mililiters equals 1 quart

and 1 quart equals 222pints

This means 222pints = 946946946 milliliters

Therefore 1 pint = 946946946/222

1 pint = 4265526.78 milliliters

Therefore there are 4265526.78 milliliterss in a pint.

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Answer:

3/2

Explanation:

To divide the fractions using models, we will use the following:

Now, we need to count how many green rectangles are in the red zone. So, we can see that there are 1 complete rectangle and a half, then the answer of the division is:

On the other hand, we can divide the fractions using the reciprocal as:

So, the answer is 3/2

Answer:

\(55.45+p\)

The decimal point is one step behind and rounded the number.

Step-by-step explanation:

Cost of leggings = $24.95

Cost of crewneck = $30.50

Cost of new purse = p

The correct expression to find the total cost of her shopping is

\(24.95+30.5+p\)

\(=55.45+p\)

What Paige did was she put the decimal point one step behind and rounded the number.

\(2.495+3.05+p\)

\(=5.545+p\)

\(=5.55+p\)

So, she got the wrong expression.

The equation of the line that passes through the points (-8, 9) and (2, -6) is y = (-3 / 2)x - 3.Given two points (-8, 9) and (2, -6). We are supposed to find the equation of the line that passes through these two points.

We can find the equation of a line that passes through two given points, using the slope-intercept form of the equation of a line. The slope-intercept form of the equation of a line is given by, y = mx + b,Where m is the slope of the line and b is the y-intercept.To find the slope of the line passing through the given points, we can use the slope formula: m = (y2 - y1) / (x2 - x1).Here, x1 = -8, y1 = 9, x2 = 2 and y2 = -6.

Hence, we can substitute these values to find the slope.m = (-6 - 9) / (2 - (-8))m = (-6 - 9) / (2 + 8)m = -15 / 10m = -3 / 2Hence, the slope of the line passing through the points (-8, 9) and (2, -6) is -3 / 2.

Now, using the point-slope form of the equation of a line, we can find the equation of the line that passes through the point (-8, 9) and has a slope of -3 / 2.

The point-slope form of the equation of a line is given by,y - y1 = m(x - x1)Here, x1 = -8, y1 = 9 and m = -3 / 2.

Hence, we can substitute these values to find the equation of the line.y - 9 = (-3 / 2)(x - (-8))y - 9 = (-3 / 2)(x + 8)y - 9 = (-3 / 2)x - 12y = (-3 / 2)x - 12 + 9y = (-3 / 2)x - 3.

Therefore, the equation of the line that passes through the points (-8, 9) and (2, -6) is y = (-3 / 2)x - 3. Thus, the answer is (-3/2)x - 3.

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Answer:

https://youtu.be/ssE-HVO4SY4

On solving the provided question, we can say that 1 degree = 3600 arc seconds and 1 degree = 60 arc minutes.

A 160 degree angle is measured in arc minutes, often known as arcmin, arcmin, arcmin, or arc minutes (represented by the sign '). One minute is equal to 121600 revolutions, or one degree, hence one degree equals 1360 revolutions (or one complete revolution). A degree, also known as a complete angle of arc, angle of arc, or angle of arc, is a unit of measurement for plane angles in which a full rotation equals 360 degrees. A degree is sometimes referred to as an arc degree if it has an arc of 60 minutes. Since there are 360 degrees in a circle, an arc's angles make up 1/360 of its circumference.

1 degree = 3600 arc seconds

1 degree = 60 arc minutes

A. 2 degree 18'36 = 2 + 18/60 + 36 / 2600 = 231 / 100 degree

B. 36 ′ 18 ′′ = 36/60 + 18/2600 = 121 / 200 degree

C. 7 degrees 59′ 59′′ = 7 + 59 / 60 + 59 / 3600 = 28799 / 3600 degree

D. 1' = 1/60 degree

F. 1" = 1/3600 degree

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To solve this system of equations, we can substitute y = 2x^2 from the first equation into the second equation for y, and then solve for x:

2x^2 = -3x - 1

Rearranging this equation, we get:

2x^2 + 3x + 1 = 0

Now we can solve for x using the quadratic formula:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 2, b = 3, and c = 1. Substituting these values, we get:

x = (-3 ± sqrt(3^2 - 4(2)(1))) / 2(2)

x = (-3 ± sqrt(1)) / 4

There are two solutions for x:

x = -1

x = -1/2

Now we can use these values of x to find the corresponding values of y:

When x = -1:

y = 2x^2 = 2(-1)^2 = 2

y = -3x - 1 = -3(-1) - 1 = 2

So one solution to the system of equations is (-1, 2).

When x = -1/2:

y = 2x^2 = 2(-1/2)^2 = 1/2

y = -3x - 1 = -3(-1/2) - 1 = 3/2 - 1 = 1/2

So another solution to the system of equations is (-1/2, 1/2).

Therefore, the solutions to the system of equations are (-1, 2) and (-1/2, 1/2).

Answer y = 2x^2. , y = -3x -1

Answer:

A: area of one additional plan exceeds 624 square feet ...... it does not

Step-by-step explanation:

let's lay out the six additional plans:

plan                         width                  length                  area

6                                26                       24                          624

7                                 28                      22                           616

8                                30                       20                           600

9                                32                       18                             576

10                              34                         16                            544

11                                36                       14                             504

A: one additional plan (plan 6) does not exceed 624. so this incorrect

B: one of the plans (plan 11) is less than 544. this is correct.

C: area of plan 6 = area of plan 5. this is correct.

D: Plan 7 area (616) is less than area of plan 6 (624). this is correct.

So, A is incorrect

If sinA = 3/8, the value of cosec A - sec A is (72√55 - 440)/495

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

If sin A = 3/8

and SinA = opp/ hyp

opp = 3 and hyp = 8

using Pythagoras theorem

8² = 3²+adj²

adj = √ 8²-3²

adj = √64-9

adj = √55

cos A = √55/8

sec A = 1/CosA = 8/√55

cosec A = 1/sinA = 8/3

cosec A-sec A = 8/ √55 - 8/3

= (24-8√55)/3√55

= (72√55 - 440)/495

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Answer:

15 students

Step-by-step explanation:

The fraction of students who will repeat the exam is:

\(1-\frac{6}{9}\)

=\(\frac{9}{9} -\frac{6}{9} =\frac{3}{9}\)

simplified is:

\(\frac{1}{3}\)

Extract this fraction of 45:

\(45(\frac{1}{3} )=\frac{45}{3} =15\)

Hope this helps