Why are the divisibility rules for 2, 3, and 5 very useful for determining prime and composite numbers

1. They are the smallest odd numbers
2. They add up to 10
3. They are prime numbers with nice divisibility rules
4. They multiply to 30
5. They can be multiplied together to make every number

Answers

Answer 1

Answer:

option 3.

Step-by-step explanation:

alright, ima explain each option.

1. "smallest odd numbers" 2 is an even number. that's out of the playing field.

2. "add up to 10" sure, they do add up to 10, but finding prime and composite numbers are all about division and multiplication.

3. this is true. 2, 3, and 5 are all prime numbers, and they have the nice divisibility rules. [ for 2, it has to be even, for 5, it has to end in 0 or 5, and 3 has to have the sum of its digits being divisible by 3. ]

4. they do multiply to 30, but this does not help break the composite numbers down.

5. we cannot make every number with just these. we can not multiply any other whole number to get 7 for per example, because it's a prime number.

sub to gauthmath sub reddit if ya can !

Answer 2
They are prime numbers with nice divisibility rules

Related Questions

Please help me! I will give brainly!

Answers

Answer:

Blank1: (-1/10)

Blank2: 1

Blank3: 5

Step-by-step explanation:

First we can see that numerator is equal to 1 in the last equation, so the second missing value is 1. Looking at the middle equation we can differ that the denominator is 10. This means the missing number in the third equation is equal to ten, so a*2=10, where the answer "a" is the missing value. Solve the equation by dividing both sides by 2 leaving a=5. Final step is to make 1/5+b=1/10, where ''b" is the answer for the first blank. Solve the equation by subtracting (1/5) from (1/10) leaving b=(-1/10)

start from the right we knew that numerator is 1, hence box 2=1, box 3=5 and box 1=2 since when a number divided by x, it’s also equal to a number times 1/x. in this questions x=2 so box 1=2 box 2=1 and box 3=5

Please whoever knows they can solve this, help!

I have attached the question down below. Please explain in detail and diagrams if the question permits you to do so. Thank you. I will also be marking the brainiest.

Answers

I can’t see the question I think you forgot to upload it
explanation:

Answer:Can't see the question

Step-by-step explanation:

The figure shows a line graph and two shaded triangles that are similar:



Which statement about the slope of the line is true?

A. It is fraction 1 over 2 throughout the line.
B. It is 2 throughout the line.
C.The slope from point O to point A is fraction 1 over 2 time the slope of the line from point A to point B.
D. The slope from point O to point A is two times the slope of the line from point A to point B.

Answers

Answer:

Answer is B

just do your work and proof the work and that will give u the right answer

Answer:

it is B

Step-by-step explanation:

it is just B man, trust

In triangle JKL, JKL is a right angle, KM and is an altitude. JL=20 and ML=15, find KL

Answers

Answer:

KL = 17.32

Step-by-step explanation:

KL² = (M L)(J L)

KL² = (15)(20)

KL²=300

√KL²= √300

KL = 17.32

Solve the equation 7(w + 13) = 35.

I know that it is:
7w + 20 = 35
- 20 - 20
7w/7 = 15/7
But I just don't know what 15 divided by 7 is as a fraction. Some one please help this is due in a week!

Answers

Answer:

w = -8

Step-by-step explanation:

7(w + 13) = 35

Divide each side by 7

7/7(w + 13) = 35/7

w+13 = 5

Subtract 13 from each side

w+13-13 =5-13

w = -8

Or you can distribute

7w +91 = 35

Subtract 91 from each side

7w+91-91 = 35-91

7w = -56

Divide each side by 7

7w/7 = -56/7

w = -8

Answer:

7(w+13)=35  {Here, 7 is wholly multiplied to w and 13}

7w+91=35

7w=35-91= -56

w= [tex]\frac{-56}{7}[/tex]

w= -8

Proof:

7(-8+13)= -56+91= 35

Therefore, w= -8

Can you please answer my question please,

Answers

Answer cl/100 pls mark me brainliest so I can rank up

What is the slope of the graph of y = -3x?

-1/3
1/3
-3
3

Answers

Answer:

Slope is -3

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define

Identify

y = -3x

↓ Compare to y = mx + b

Slope m = -3

y-intercept b = 0

your answer would be -3 because it is the number next to x

Is this a function?

​{(–2, 4), (0, 5), (2, 4), (3, 5), (–2, 1), (1, 4)

PLZ HURRY WILL MARK BRAINLIEST

Answers

Answer:

not a function

Step-by-step explanation:

A function has a one to one relationship

No input value can have more than one output value

-2 as an input goes to both 4 and -1 so it has more than 1 output

This is not a function

Please Help Will Give Points

Answers

Answer:

2

Step-by-step explanation:

Brainleist me and ill give the answer

Solve the equation -10(g - 6) = 65.

Answers

Answer:

g = -1/2

Step-by-step explanation:

-10(g - 6) = 65

Distribute

-10g +60 = 65

Subtract 60 from each side

-10g+60-60 = 65-60

-10g = 5

Divide by -10

-10g/-10 = 5/-10

g = -1/2

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{-10(g - 6) = 65}\\\\\rightarrow\large\textsf{-10g + 60 = 65}\\\\\large\text{SUBTRACT 60 to BOTH SIDES}\\\\\large\textsf{-10g + 60 - 60 = 65 - 60}\\\\\large\text{CANCEL out: 60 - 60 because that gives you 0}\\\\\large\text{KEEP: 65 - 60 because that helps you solve for your g-value}\\\\\large\textsf{65 - 60 = \bf 5}\\\\\large\text{DIVIDE -10 to BOTH SIDES}\\\\\mathsf{\dfrac{-10g}{-10}=\dfrac{5}{-10}}\\\\\large\text{CANCEL out:: }\mathsf{\dfrac{-10}{-10}}\large\text{ because that gives you 1}[/tex]

[tex]\large\text{KEEP: }\mathsf{\dfrac{5}{-10}}\large\text{ because that gives you the g-value answer}\\\\\large\textsf{g = }\mathsf{\dfrac{5}{-10}}\\\\\large\textsf{g =}\mathsf{\dfrac{5\div5}{-10\div5}}\\\\\large\textsf{g = }\mathsf{\bf - \dfrac{1}{2}}\\\\\\\\\boxed{\boxed{\large\textsf{Therefore, your answer is: g = }\mathsf{- \bf \dfrac{1}{2}}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}\\\\\\\\\\\frak{Amphitrite1040:)}[/tex]

3:Last year a fishing license cost $52.00. This year the license will cost $27.04. This is a ____ percent decrease.

Answers

Answer:

48% decrease

Step-by-step explanation:

Original cost subtract new cost

52-27.04

24.96

Divide by original cost

24.96 / 52

0.48

Change to percent form

48%

48% decrease

52.69% decrease, This year’s cost divided by last year’s cost times 100

If 2580 people watched one show and 2920 people watched another show. How many people need to watch the third show for there to be a 3000 people average attendance per show?

Answers

Answer:

340

Step-by-step explanation:

2920 - 2580 = 340

There need to be 340 people to watch the third show.

to average 3000 for three shows, the total people would need to be 9000

9000-2580-2920=3500

Can you guys help me? The question is in the image

Answers

The 2 will repeat hope this helps <3

KINDLY EXPLAIN HOW THE CENTROID DIVIDES THE MEDIANS IN A RATIO 2:1

Answers

Answer:

The centroid of a triangle divides each median in the ratio of 2:1. D, E, F are mid-points of BC, CA, AB. AD, BE and CF are medians. The medians cut each other are centroid G.

Helpful link:

https://qcweb.qc.edu.hk/math/Junior%20Secondary/Centroid%20divides%20medians%20in%202%20to%201.htm#:~:text=The%20centroid%20of%20a%20triangle,in%20the%20ratio%202%3A1&text=D%2C%20E%2C%20F%20are%20mid,each%20others%20are%20centroid%20G%20.

Answer:

The centroid of a triangle divides each median in the ratio of 2:1. D, E, F are mid-points of BC, CA, AB. AD, BE and CF are medians. The medians cut each other are centroid G.

Helpful link:

https://qcweb.qc.edu.hk/math/Junior%20Secondary/Centroid%20divides%20medians%20in%202%20to%201.htm#:~:text=The%20centroid%20of%20a%20triangle,in%20the%20ratio%202%3A1&text=D%2C%20E%2C%20F%20are%20mid,each%20others%20are%20centroid%20G%20.

help pls :( I only need one question to pass

Answers

Answer:

The 3rd semi-circle equals 31.

Step-by-step explanation:

Since the Pythagorean Theorem states that "The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c)," we can find the answer of the 3rd semi-circle by finding the sum of each of the 2 smaller semi-circles and adding them together.

the answer to this question is 31 the area of the A3 is 31

Job seekers should try to work for their preferred companies __________.
A.
without searching the job market
B.
even if it is not the ideal position
C.
even if there are no current openings
D.
only if they know someone at the company

Answers

Answer: B

Step-by-step explanation:

B. even if it is not the ideal position

I need the answer to 7 please

Answers

7. a

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Circumference = 2πr

So, circumference of this circle

= 2πr

= 2 × 3.14 × 8 feet

= 3.14 × 16 feet

= 50.24 feet

b.

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Area = πr²

So, area of this circle

= 3.14 × (8 feet)²

= 3.14 × 64 feet²

= 200.96 feet²

Answer:

Done

Step-by-step explanation:

Area - 201.06192983

Circumference - 50.2654824574

Please help me! I will give brainly



A picture shows the Washington Monument. The text below the picture reads, “The Washington Monument is made out of marble and has an aluminum pyramid at the top”. The height of the monument is labeled 554 and 3 fourths feet. The height at which the construction work halted is labeled 152 feet.

Answers

Answer:

456ft

Step-by-step explanation:

Answer:

402.75

Step-by-step explanation:

554.75-152 = 402.75

HELP HELP HEL[P HELP HELP HELP HELP

sorry about the wrong file



write the answer in the comments section

Answers

Answer:

15

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

50 POINTS
My neighborhood is full of one-way streets. To drive from my house to the grocery store, I have to go 1 block south, then 1 block east, then 5 blocks north, then 2 blocks east. Each block is 1/16 of a mile. How much shorter would my trip be if I could fly like a bird (that is, travel in a straight line)?
I FOUND THE distance for non bird which is 9/16. I wanna apply the pythagoreum theorum and draw a straight line to make it a triangle so I can do so but don't know where to place it

Answers

1/4. . Hope this helps you
Let's suppose that your house is located at (0,0)

1 block south from here puts you at (0, -1/16)

1 block east from here now puts you at (1/16, -1/16)

5 blocks north from here puts you at (1/16, 4/16)

2 blocks east from here puts you at (3/16, 4/16)


You have traveled (1/16) ( 1 + 1 + 5 + 2) = 9 / 16 of a mile

The "straightline" distance between (0, 0) and (3/16, 4/16) =

sqrt [ (3/16^2 + (4/16)^2 ] = sqrt [ 25 / 256] = 5 /16 of a mile

Your trip would be [ 9/16 - 5/16 ] which equals 4/16 simplified equals 1/4 of a mile.

find the nth term
16,25,36,49

Answers

So studying the sequence you could see that 4multiplying itself gives 16 and 5 by itself 25 , 6 by itself 36 , 7by itself 49 so by all means the next will be 8 by itself which is 64

Answer:

Hello,

Step-by-step explanation:

16=(1+3)²

25=(2+3)²

36=(3+3)²

49=(4+3)²

[tex]u_n=(n+3)^2\\[/tex]

Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies. Before winter break, he bought a new racing video game for $49.86. How much money did Perry have left?

Answers

Answer:

[see answer below]

Step-by-step explanation:

"Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies."

4 * 20 = 80

2 * 10 = 20

3 * 0.1 = 0.3

2 * 0.01 = 0.02

80 + 20 + 0.3 + 0.02 = $100.32

100.32 - 49.86 = 50.46

Hope this helps you.

Answer:

$50.46

Step-by-step explanation:

Yes now just solve this for brainliest unless your a copy ;)

Answers

Answer:

-30 - 6 = -36

-36/-4 = 9 So it wouldnt work

0 - 6 = -6

-6/-4 = 1.5 It won't work

-48 - 6 = -54

-54/-4 13.5 Wouldn't work

-18 - 6 = -24

-24/-4 = 6

Looks like -18 is the answer

-18 Is the answer :D

Answer:

-18

Step-by-step explanation:

Just try all of them. I started bottom up.

-18 - 6 / -4 = -24 / -4 = 6

YOU BEST MARK ME THE BRAINLIEST. I got them brains.

William has a 26-liter glass tank. First, he wants to put some marbles in it, all of the same volume. Then, he wants to fill the tank with water until it's completely full. If he uses 85 marbles, he will have to add 20.9 liters of of water.

What is the volume of each marble?
How much water is necessary if William uses 200 marbles?

Answer: 0.06/marble | 14 liters

Answers

The volume of the marbles is   26-20.9 = 5.1 l      and there ar e85 marbles

5.1/85 = .06 l/marble

 

then 200 marbles would requrie    .06 l/marble x 200 marbles = 12 liters

so he would only need  26-12= 14 liters of water to fill the tank !

Answer:

14 marbles

Step-by-step explanation:

Mr. Tola’s bag contains 7 types of pencils. There are 2 green pencils, 3 blue pencils, and 2 pink pencils. Mr. Tola randomly picks one pencil out of the bag. If x represents the likelihood of probability, what is the probability (the chance) that Mr. Tola picks either a green or pink pencil? What is the probability he picks a blue pencil?

Answers

Answer:

First part: x = 4/7

Second part: x = 3/7

Step-by-step explanation:

First Answer is x=4/7
The Second answer is x=3/7

The box plots shown represent the snowfall amounts at a ski resort for two different years. Use the box plots to compare the data sets.


Drag each value to show if it is greater for 2014, greater for 2015, or if there is not enough information to tell.

Answers

Answer:10

Step-by-step explanation:

if a canoe travels with a speed of a mph for 3 hours, and then with a speed of b mph for the rest of the way, how long does it take to travel c miles?

Answers

Answer:

3+b=c

Step-by-step explanation:

Answer:

3+b=c

Step-by-step explanation:

Solve the equation -8(n + 7) = -88. What are two ways to start solving this equation? Choose BOTH ways.
1) Subtract 7 from both sides.
2) Use the distributive property.
3) Add 8 to both sides.
4) Add 88 to both sides.
5) Divide both sides by -8.

Answers

Answer:

Divide each side by -8

Distribute

Step-by-step explanation:

-8(n + 7) = -88.

Method 1

Divide each side by -8

n+7 = 11

Subtract 7 from each side

n = 4

Method 2

Distribute

-8n-56= -88

Add 56 to each side

-8n = -32

Divide by -8

n=4

Answer:

Distributive property & dividing -8 on both sides.

Step-by-step explanation:

You can begin solving the equation by either using the distributive property or dividing -8 on both sides.

Distributive Property:

[tex]-8(n+7)=-88\\-8n-56=-88\\-8n=-32\\n=4[/tex]

Dividing:

[tex]-8(n+7)=-88\\n+7=11\\n=4[/tex]

I need help with these questions from 11 to 20. I already did questions 1 through 10 with my math teacher but I'm not in school so please please please answer all of these answers it would mean a lot to me and would help me a lot with the math homework I need to get done, so yeah. Please help.

Answers

Hope this helps :D

11 is 6 and 3
12 is coefficient
13 is variable
14 is 82b and 3u^2 and 7 and 41h and 54
15 is 9r and 2g
16 is exponent
17 is constant
18 is 21 and 8 and 3
19 is r and g and n
20 is a term
13 answer is
The number and element

​Find the slope of the line that passes through the points ​A​(–3, 1) and ​B​(2, –5).



PLZ ANSWER ACCURATELY AND QUICKLY WILL MARK BRAINLIEST

Answers

Answer:

- 6/5

Step-by-step explanation:

To find the slope

m = ( y2-y1)/(x2-x1)

   = ( -5-1)/(2- -3)

   = (-5-1)/(2+3)

  - 6/5

Answer:

-6/5 or -1 1/5

Step-by-step explanation:

The formula to find the slope with any 2 points of a line is rise/run, or

(y2-y1)/(x2-x1)

In this case, y2 is -5, y1 is 1, x1 is -3, and x2 is 2.

So, the slope is:

(-5-1)/(2-(-3))

-6/5 which, as a mixed number, is -1 1/5.

You can also graph out the points on a coordinate plane, draw the line between the points, and count the rise/run, but that might take a minute or two, which is not the best if you have a timed test.

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