3. How could you adapt the rule for division by 3 to decide easily when
a number is divisible by 9?

Answers

Answer 1

A divisibility rule is a simple method for determining whether or not an integer is divisible by a fixed divisor without having to divide it by looking at its digits.

The three-digit divisibility rule asserts that if the sum of a whole number's digits is a multiple of three, the original number is also divisible by three.

The total of all the digits in 1377 is 1+3+7+7 = 18. Because 18 is divisible by three, 1377 is likewise divisible by three. The quotient is 1377 3 = 459, and the remainder is 0.

The divisibility rule of 9 asserts that if a number's sum of digits is divisible by 9, the number is divisible by 9 as well.

The three-digit divisibility rule and the nine-digit divisibility rule are quite similar. As previously stated, the divisibility rule for the divisibility test of 3 asserts that if a number's sum of all digits is divisible by 3, the number is also divisible by 3. The divisibility rule of 9 is similar to the divisibility rule of 3, in that a number is said to be divisible by 9 if the sum of all of its digits is divisible by 9.

Take 52884 for example. 52884 is divisible by three since the total of all digits is 5+2+8+8+4 = 27. The quotient is 52884 ÷ 3 = 17628, and the remainder is 0. It's worth noting that the sum of the digits is 27 is 2 + 7 = 9, which is likewise divisible by three.

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Related Questions

logarithmic differentiation Y=2^X​

Answers

By logarithmic differentiation, the first derivative of y = 2ˣ is y' = 2ˣ · ㏑ 2.

How to use logarithmic differentiation

Logarithmic differentiation is a combination of derivative rules and logarithm properties which is useful to derive power, exponential and power-exponential functions:

y = 2ˣ

㏑ y = ㏑ 2ˣ

㏑ y = x ㏑ 2

y' / y = ㏑ 2

y' = y · ㏑ 2

y' = 2ˣ · ㏑ 2

By logarithmic differentiation, the first derivative of y = 2ˣ is y' = 2ˣ · ㏑ 2.

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nancy wants to vacation in austin texas. Hotel A charges $179 per night with a 14% nightly room tax and free parking. Hotel B charges $169 per night with 18% nightly room tax plus a one time $40 parking fee. After how many nights will Hotel B be less expesnsive?

Answers

The number of nights will be 8.62 when the Hotel B charge is less than A.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that hotel, A charges $179 per night with a 14% nightly room tax and free parking. Hotel B charges $169 per night with 18% nightly room tax plus a one-time $40 parking fee. The number of the nights will be calculated as below:-

From the given data from the equations:-

A = 179 + ( 0.14 x 179 ) x

A = 204.06x

B = ( 169 + ( 0.18 x 169 )x + 40

B = 199.42x + 40

Equate the two equations:-

204.06x = 199.42x + 40

4.64x = 40

x = 40 / 4.64

x = 8.62 nights

Therefore, the number of nights will be 8.62 when the Hotel B charge is less than A.

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Identify the number as​ prime, composite or neither. If the number is​ composite, write it as the product of prime factors. 1

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

A. The number is composite. Its prime factors written as a product are ( )
B. The number is prime.
C. The number is neither prime nor composite.

Answers

The correct option regarding number 1 is given by:

C. The number is neither prime nor composite.

What are prime numbers?

Prime numbers are numbers that have only two factors, that are 1 and itself. Examples of prime numbers are 2, 3, 5, 7, and so on...

Number 1 has only one factor, itself, hence for this reason it is neither prime(two factors are needed) nor composite, as it cannot be written as a product of two numbers both different than 1, hence option c is correct.

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I really don't get this can someone help meh please :d

Answers

Answer:

this is a vertical problem what is on one side is on the other

Step-by-step explanation:

so r is the same as 95

12. A 500 N force is applied to a 25 m/s² object. The mass of the object is
A. 12,500 kg
B. 12,500 m/s
C. 20 kg
D. 20 m/s

Answers

Answer:

C is right 20kg

Step-by-step explanation:

bec

ause the formula of force=mass ×acceleration

to find mass= force/acceleration.

Which number is divisible by both 2, 5, and 10?

Answers

Answer: A number that ends in 0 is divisible by 2, 5, and 10. 6730 is divisible by 2, 5, and 10, which means that it is in the 2, 5, and 10 times tables.

Step-by-step explanation:

Answer: 6,730

Step-by-step explanation:  A number is divisible by 10 if it ends in a 0. The number ends in a 0 and so it is divisible by 10. A number that ends in 0 is divisible by 2, 5 and 10. 6730 is divisible by 2, 5 and 10, which means that it is in the 2, 5 and 10 times table.

Evaluate 4-0.25g + 0.5h when g=10 and h=5

Answers

“4-0.25(10) +0.5(5)” - put this into your calculator, the bracket means multiply so as example 2(5)=10

not really sure though

Alec's car payment is $316 each month.
How much do his car payments
year?

Answers

Answer:

$3,792

Step-by-step explanation:

$316 x 12

Y=44 when x=a^3
Y is inversely proportional to the cube of x
Show us that y=5.5 when x=2a

Answers

Answer:

0.283258167471352[tex]\sqrt[3]{k}[/tex]

Step-by-step explanation:

Based on the given conditions, formulate:

Write the equation of the function:

Substitute and calculate:

Convert 459 L to mL
O 0.459 mL
O 459, 100 mL
O 4.59 x 105 mL
O 0.000439 mL

Answers

Answer:

0.456

Step-by-step explanation:

456÷1000

=0.456ml

What is the sum? Enter your answer as a mixed number in the simplest form.
HELLPPPPPPPPPPP

1/3+ 5 3/4

Answers

Answer: 4 1/12 or 49/12




Equation: 5•3=15
15/4+1/3

4•3=12. 15•3=45
4•1=4
45/12+4/12= 49/12

Simplest form is 4 1/12

The domain is 0, 1, 2, 3, 4, and 5. What is the range? Select all that apply.

Answers

Considering the numeric values and the range concept, we have that:

The range of the function is given by: {f(0), f(1), f(2), f(3), f(4), f(5)}.

How to find the numeric value of a function/expression?

To find the numeric value of a function, we replace each instance of the variable by the desired value.

The range of a function is the set that contains all possible output values for the function. These outputs are the numeric values for the domain of the function, which compose the input values.

For this problem, we have that:

The domain is composed by: 0, 1, 2, 3, 4 and 5.The outputs for the function will be given by: f(0), f(1), f(2), f(3), f(4), f(5).

Hence:

The range of the function is given by: {f(0), f(1), f(2), f(3), f(4), f(5)}.

The function is not given, hence this problem was solved speaking in general terms. In your problem, you will mark the numeric values of the function given.

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Calculate the value of x.
Give your answer as an integer or as a fraction in its simplest form.

Answers

18/4 = 4.5

10 x 4.5 = 45

therefore, x = 45cm

Solve for W
5 = 7w + 8w + 2

Answers

The answer is 1/5.
What you want to do is isolate W. Add the two W terms together and subtract two to isolate and combine like terms.

w = 5

Step-by-step explanation:

2+(7w)+(8w)=5

(7÷5)+(8÷5)+2

(1.4) (1.6) +2

+1.5

=3+2=5


What is the common ratio in the geometric sequence 9/2, 3,2, 4/3, . . . . . ?
(F) 3/2 (G) 9/2 (H) 2/3 (I) 27/2

Answers

The correct answer to this problem is an option (H) 2/3.

A sequence is a sequence of things (usually numbers) in order 3, 5, 6, 7, 8, and so on. A geometric sequence is known as a particular type of sequence ]. A sequence multiplies each term (except the first) by a constant to get the next term in the sequence. So, from the information, we can conclude that to get the next term in the geometric sequence, we need to multiply that with a specific term (known as the common ratio), and to find the last term in the sequence, we multiply that term by the same standard ratio. Just split it.

Given GP is 9/2,3,2,4/3

Common ratio = Second number / first number

= 3/ (9/2) =2/3

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The height in inches, h, of s sheets of paper can be described by the equation h=0.004s. What does the 0.004 mean in this situation?

Answers

The "0.004" is the constant of proportionality, in this particular case, that value represents the height if a single sheet of paper.

What does the 0.004 mean in this situation?

We know that the height, in inches, of s sheets of paper can be described by the equation:

h = 0.004*s

So, if we have a single sheet, the height is:

h = 0.004*1 = 0.004

The height of a single sheet if 0.004 inches.

If instead we have two, then s = 2, we will have:

h = 0.004*2 = 0.008

The height is 0.008 inches.

So, the given equation:

h = 0.004*s

Is a proportional relation.

The "0.004" is the constant of proportionality, in this particular case, that value represents the height if a single sheet of paper.

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Pls pls help whoever gets it right gets a crown

Answers

Answer:

last one is right

Step-by-step explanation:

multiply 8 by X is 8x and 8 multiplied by 8 is 64

Hope it helps

Answer: 8x+64=8x(x+8)

Step-by-step explanation:

8 is a common of 8 so 8x8=64

43.95 divided by 16.2

Answers

Answer:

2.712

Step-by-step explanation:

2.712

The answer is 2.712

what is the equation for the standard form of the line that has an x-intercept of 3 and a y-intercept of 5​

Answers

5x+3y=15 is the equation for the standard form of the line .

What is in slope-intercept form?

Given the slope of the line and the intercept it forms with the y-axis, one of the mathematical forms used to derive the equation of a straight line is called the slope intercept form. Y = mx + b, where m is the slope of the straight line and b is the y-intercept, is the slope intercept form.

We are given two coordinates (3,0) (0,5)

Start by finding slope

y2-y1/x2-x1=  5-0/0-3= -5/3 this is your slope m.

y=mx+c

y= -5/3x+c (but remember standard line is ax+by=c) so we have to switch sides

5/3x + y=5 (remember standard form has no fraction so multiply by 3 on all sides)

5x+3y=15

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Use the spinner to find following probability. The spinner is spun again if it stops on a line.
P (pointer landing on yellow)

Answers

The probability of the spinner's point landing on yellow is 30.56%.

What exactly would be a pie chart?

A pie graph is a type of chart which displays data in the form of a circular graph.

We understand that the total value of the pie is always 100%. It is also understood that a circle will have a circumference of 360°. As a consequence, the total of all data points equals 360°. There appear to be two main pie chart formulas based on these:

To evaluate a proportion of the data set, we just use following formula: (Frequency ÷ Total Frequency) × 100To transform the information to degrees, we should use following formula:  (Mentioned Data ÷ Total value of Data) × 360°

When a circle is completely rotated, it forms a 360-degree angle in the center.

The overall percentage of all colors is 100%.

Because 360 degrees / 100 percent = 3.6, divide the valuation of yellow by 3.6.

The total percentage of yellow displayed by the spinner's pointer is 110%.

P (probability of landing on yellow) = 110/3.6

P (probability of landing on yellow) = 30.555... = 30.56 (approx.)

As a result, the probability of the pointer landing on the yellow is 30.56%

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Rewrite x4y2-6x3y3 using a common factor

Answers

Answer:

[tex]x^4y^2-6x^3y^3 = x^3y^2(x - 6y)[/tex]

Step-by-step explanation:

to pick out common factors, you have to find the highest common denominator. We start by listing units and variables:

we can divide the x^4y^2 by up to x^4 and up to y^2, cannot divide by non-variable numbers

we can divide 6x^3y^3 by up to x^3 and up to y^3, and by 6 if we needed to.

This means that for units, we're not dividing (because we can't simplify x^4y^2 dividing by a bare number.

For x, we can divide both by x^3, because we can divide both by x^3, but cannot divide 6x^3y^3 by x^4 or more.

For y, we can divide both by y^2, because we can divide both by y^2, but cannot divide x^4y^2 by x^3 or more.

We take the x^3y^2 and bring it in front of the brackets.

Disclaimer: when I say "cannot divide" I mean "cannot divide without introducing fractions or negative exponents".


Find the tenth term of each arithmetic sequence. 2,8,14,20, ...........

Answers

The 10th term of the given arithmetic sequence 2,8,14,20, ........... is ( a₁₀ = 56.)

Describe the AP arithmetic progression series?

The difference between two mathematical orders is a fixed value in Arithmetic Progression (AP). Arithmetic Sequence is another term for it.

We'd come across a few key words in AP which have been classified as:

The first term (a)Common difference (d)Term nth (an)The total of first n terms (Sn)

The AP can also be viewed in terms of common differences, as illustrated below.

The following is the process for evaluating an AP's n-th term: an = a + (n − 1) × dThe so these is the arithmetic progression sum: Sn = n/2[2a + (n − 1) × d].Common difference 'd' of an AP: d = a2 - a1 = a3 - a2 = a4 - a3 = ......      = an - an-1.

Now, the sequence given in the question is;  2,8,14,20, ...........

Define the first term as 'a₁' = 2.

Define 'a₂' = 8 is the second term.

Define the third term as 'a₃' = 14.

Evaluate the common difference;

d = a₂ - a₁  

Put the values in the obtained equation;

d = 8 - 2 = 6

Now, to evaluate the value of the 10th term imply the formula of nth term.

an = a + (n − 1) × d , n = total number of terms = 10.

Substitute all the values;

a₁₀ = 2 + (10 - 1) × 6

a₁₀ = 2 + 9 × 6

a₁₀ = 2 + 54

a₁₀ = 56.

Therefore, the value of the 10th term is found as a₁₀ = 56.

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Find the equation for the line parallel to 3x+5y-4=0, with the same x-intercept as 2x-3y-6=0

Answers

Equation of line is 5y = -3x + 9 .

What is equation of line?

A straight line's general equation is y = mx + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis. On the y-axis, this value c is referred to as the intercept.

3x+5y-4=0

5y = -3x + 4

y = -3/5 x + 4/5

since it is parallel, its slope, m is -3/5

2x-3y-6=0

3y = 2x - 6

y = 2/3x - 2

at x-intercept, y is zero

2 = 2/3x

x = 3

therefore

y = mx + c

0 = (-3/5  * 3 ) + c

c = 9/5

equation is

y = -3/5x + 9/5

5y = -3x + 9

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Hey i am a student of Grade 10 . due to online classes i havent studied for 2 years and i have no idea about maths. what order do i got to recap everything . some one please help! (CBSE)

Answers

Answer:

Khan academy could really help it has videos and lessons so start there.

Step-by-step explanation:

3 squared by 6 squared?

Answers

Answer: 1/4

Step-by-step explanation:

3^2 / 6^2 =

(3/6)^2=

(1/2) ^ 2=

1^2 / 2^2 = 1/4

Can please help me with this question

Answers

The possible coordinates of point G on the number line is -15 and 7.

How to find the coordinates on a number line?

On the number line, point E has the coordinates of - 4, and EG = 11 .

The possible coordinates of point G are as follows:

A number line is a horizontal straight line with numbers placed at equal distances from each other along that line.

Negative numbers are on the left side while the positive numbers are on the right side.

Therefore, the possible coordinates of G is when we go left or right side of E on the number line.

Hence,

Let's go left E to G on the number line

-4 - 11 = -15

Let's go right E to G on the number line

-4 + 11 = 7

Therefore, the possible coordinates of point G on the number line is -15 and 7.

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I need help asap!!!!

Answers

For given polynomial 1/2a^4 + 3a³ + a

1) There is no coefficient for the third term.

2) The constant term is 0.

In this question, we have been given a polynomial 1/2a^4 + 3a³ + a

We need to determine the coefficient of the third term and the constant term.

we can rewrite given polynomial as 1/2a^4 + 3a³ + 0a² + a + 0

The general form of the fourth degree polynomial is:

a_0 + a_1x + a_2x^2 + a_3x^3 + a_4x^4

where a_0 is the constant term

Comparing given polynomial with above general form.

a_0 = 0

a_1 = 1

a_2 = 0

a_3 = 3

a_4 = 1/2

So, the constant term is a_ 0 = 0

And there is no coefficient for the third term.

Therefore, for given polynomial 1/2a^4 + 3a³ + a

1) There is no coefficient for the third term.

2) The constant term is 0.

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If P(-3, 6) is tranlated 4 units up and 8 units down what are the coordinates of P?????

Answers

The coordinates of P' is (-3,2).

Given that P(-3, 6) is translated 4 units up and 8 units down.

The translation of a point involves moving it a certain distance horizontally and/or vertically. You can find the address of a translated point like this:

To translate a point to the right, add the translation to the x-value.To translate a point to the left, subtract the translation from the x value.To translate a point up, add the translation to the y-value.To translate a point down, subtract the translation from the y-value.

The point P(-3,6) is shown in blue above.

Travel 4 unit to the up and 8 units down from point P, and you arrive at point P'(-3,2), shown in red.

Hence, the coordinates of P' when P(-3, 6) is translated 4 units up and 8 units down is P'(-3,2).

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Use the given information to write an equation of the circle.
center (6,4) , through (2,1)

Answers

Using the given information, the equation of the circle with center located at point (6 , 4) and passes through the point (2 , 1) is (x - 6)^2 + (y - 4)^2 = 25.

Using the distance formula, get the radius of the circle by solving for the distance between the center (6 , 4) and the point (2 , 1).

radius = distance = √(x2 - x1)^2 + (y2 - y1)^2

radius = √(2 - 6)^2 + (1 - 4)^2

radius= √16 + 9

radius = √25

radius = 5

The standard form of the equation of the circle is given by (x - h)^2 + (y - k)^2 = r^2, where (h , k) is the location of the center and r is the radius of the circle.

Given the radius and center of the circle, substitute these values to the standard form of the equation of the circle.

(x - h)^2 + (y - k)^2 = r^2

where (h , k) = (6 , 4)

r = 5

(x - 6)^2 + (y - 4)^2 = 5^2

(x - 6)^2 + (y - 4)^2 = 25

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If x is 6, then 7x =

Answers

Answer:

42

Hope this helps :)

Step-by-step explanation:

1. Substitute x with 6 since x is 6. When a variable is next to a number multiply them. Also, multiply when number is next to parenthesis.

7(6)

2. Solve by multiplying.

7(6) = 42

Check:

42 ÷ 7 = 6 ✓

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