true or false prime numbers are closed under subtraction?

Answers

Answer 1

Answer:

false

Step-by-step explanation:


Related Questions

HELP IT NOT FORM IT FOR MY LITTLE SIS IM TO LAZY PLEASE HELP!!!!
1. 1/2 x 2/3
2.1/2 x 2/3 x3/4
3. 1/5 x 1/2 x 7/8
4. 1/8 x 4/7
5. 2/3 x 1/6
6. 2/5 x 1/4
7. 7/54 x 9/49
caculate
1. [tex](2/3)x^{2}[/tex])
2. [tex]1 1/2x^{2}[/tex]

Answers

1. 2/6
2. 1/4
3. 7/80
4. 4/15
5. 2/18
6. 2/20
7. 63/2,646

HELP!! Shelley creates a logo using two similar icicle triangle shown below what is the length of side s in centimeters

Answers

Answer:

s = 12cm

Step-by-step explanation:

Since these are similar triangles, in order to find a missing side, you have to find the constant of proportionality

14/8 = 21/s          >> cross multiply

14s = 168             >> divide both sides by 14 to get s alone

s = 12

another way to find the answer......

Step-by-step explanation:

You still have to find the constant of proportionality, it's just going to be a bit faster this way

14/8 = 1.75

21/1.75 = 12

s = 12

I need help with this math problem

what is 15% of $58?​

Answers

Answer:

15% of 58

15÷100×58

may this help u

Answer: $ 8.70

Step-by-step explanation: 0.15 x 58 = 8.7

Help me!!! PLEASE (I only have 13 points)

Answers

Answer:

0.6 ÷ 0.3 - Option 2.

0.2 × 0.9 - Option 3.

Graph the equation y=2x+10

Answers

Answer: Look below this should answer your question. I think this is the right answer

–7 y = –28


Answer:
y = ?

Answer the ? Mark pls

Answers

Answer:

y=4

Step-by-step explanation:

-28 divided by -7 equals to 4

Hope this helps!!

Answer: y = 4

Step-by-step explanation:

-7y/-7 = -28/-7 So, Both the -7's cancel out and your left with y= you divide -28 by -7. When you divide both of the numbers you get a positive 4.

can y’all help me???

Answers

you will need 3 cups :)

ASAP PLEASE!!!

Graph the equation.
y-3 = -x + 4)

Answers

Answer:

i think the correct answer is letter D im not sure

Step-by-step explanation:

Kate started with a piece of bubblegum that was 5/8 in wide. She later blew a bubble that was 2 7/8 in wide. How much wider was Kates bubble than the original price

Answers

Answer:

9/4 or 2 1/4

Step-by-step explanation:

2 7 /8 -5/8 which gives you 9/4

A coordinate plane with Number of Text Messages on the x-axis and Number of Minutes Used on the y-axis, with points plotted at, (10, 20), (20, 40), (30, 60), and (40, 80).
A prepaid cell phone charges a preset number of minutes to use text messaging. The graph represents y, the number of minutes used for x, the number of text messages sent and received. Is there a direct variation? Which equation represents the relationship?

Yes, y = 2x.
Yes, y = 20x.
No, y = x + 10.
No, y = x + 20.

Answers

Yes y=2x that is the answer

Answer:

y=2x or "A" is correct

Step-by-step explanation:

helpppppp i took a pic because just in case yall don't understand ​

Answers

Answer:

last one

Step-by-step explanation:

the last one because it cannot be expressed as a fraction.

solve (2x+3) ( x-7)=0​

Answers

Answer:

Step-by-step explanation:

Either,

2x+3=0

2x=-3

x=-3/2

Or,

( x-7)=0​

x=7

If you found my answer useful then please mark me brainliest.

(2x+3) (x-7)=0
Answer: X = - 3/2, 7
(this is if your solving for x I’m not sure if that’s what your asking) hope this helps!

k ( n ) = | n + 1 | − 1 ; Find k ( 4 )

Answers

Answer:

4

Step-by-step explanation:

If x and y vary directly, and x = 12 when
y = 4, what is the value of x when y = 1 ?

Answers

Answer:

3

Step-by-step explanation:

Answer: x = 3

Step-by-step explanation:

y for x

4 for 12

1 for ?

Cross multiply

4? = 12 x 1

4? = 12

Divide both sides by 4

? = 3

When y = 1, x = 3.

Hope that helped!

Jada had some dimes and quarters that had a total value of $12.50. The relationship between the number of dimes, d, and the number of quarters, q, can be expressed by the equation 01.d+0.25q= 12.5.

Question 1 - 1 pts
If Jada has 4 quarters, how many dimes does she have?

Question 2 - 1 pts
If Jada has 10 quarters, how many dimes does she have?

Question 3 - 1 pts
Is the number of dimes a function of the number of quarters? If yes, write a rule (that starts with d =...) that you can use to determine the output, d, from a given input, q. If no, explain why not.

Question 4 - 1 pts
If Jada has 25 dimes, how many quarters does she have?

Question 5 - 1 pts
If Jada has 30 dimes, how many quarters does she have?

Question 6 - 1 pts
Is the number of quarters a function of the number of dimes? If yes, write a rule (that starts with q =...) that you can use to determine the output, q, from a given input, d. If no, explain why not.

Answers

1 She has 115 dimes because 0.10*115=11.5 0.25*4=1.00 11.5+1.00=12.5

2 She has 100 dimes because 0.10*100=10.00 and 0.25*10= 2.5 10+2.5=12.5

3 I think they don’t function because quarters are worth more than a dime.

4 She has 40 quarters because 0.25*40=10.00 0.10*25=2.5 10.00+2.5=12.5.

5 She has 38quarters because 0.25*38=9.5 0.10*30=3 9.5+3=12.5

6 Yes they can function because q=dx-12.5


BRAINLEST to whoever


Solve the given proportion

X= ?

Answers

Answer:

49

Step-by-step explanation:

please help meeeeeeee!!!!!

Answers

Step-by-step explanation:

Answer:

5,15

Step-by-step explanation:

For mixed fractions, mutiply the bottom and add the top Ex: 1x4=4 and 4+1=5 hence 1 1/4 being 5/4 and the second you just mulitply. 3X5=15 4X5=20 or 15/20.

Find value of m for which (-3)*
for which (-3ght X (-3) =(-35

Answers

9514 1404 393

Answer:

  m = -3

Step-by-step explanation:

The applicable rule of exponents is ...

  (a^b)(a^c) + a^(b+c)

__

  [tex](-3)^{m+2}\times(-3)^5=(-3)^4\\\\(-3)^{m+2+5}=(-3)^4\\\\m+7=4 \qquad\text{equate exponents}\\\\\boxed{m=-3} \qquad\text{subtract 7}[/tex]

So what the answer for “Kelly has $5.38 in her account before receiving her $832.19 paycheck. She writes checks for rent and car insurance in the amounts of $359.82 and $72.38. She also withdraws $30. What is her current balance?” ? Please I need this answer right away please

Answers

Answer: $375.37

Step-by-step explanation:

From the question, we are told that Kelly has $5.38 in her account before receiving her $832.19 paycheck. We are further told that she writes checks for rent and car insurance in the amounts of $359.82 and $72.38 and that she also withdraws $30.

Her current balance will be:

= $5.38 + $832.19 - $359.82 - $72.38 - $30

= $375.37

Her current balance is $375.37

y=−2x+4 Complete the missing value in the solution to the equation. ( −2) Need it quick no explanation need.

Answers

Answer:

1 is missing value..... .....

Please help quickly I will give brainlist

Answers

Answer:

a. 73%

b. 73:100

c. 0.73

d. 73/100

Step-by-step explanation:

If you are only talking about the shaded part out of the total number of squares then these are your answers

73 out of 100 is 73%

73:100 is the ratio

73/100 = 0.73 is the decimal

73/100 is the fraction

A triangle has A, B, and C located at(-3, 0). (3, 0), and (0, 4), respectively, on the coordinate plane. The medians of (triangle)ABC intersect
at the point with which coordinates? Round each coordinate to the nearest tenth if necessary.

A. (1.5, 2)

B. (-1.5, 2)

C. (0, 1.3)

D. (0, 0)

Answers

Given:

Vertices of a triangle ABC are A(-3,0), B(3,0) and C(0,4).

To find:

The intersection point of all the medians of the triangle ABC.

Solution:

We know that, intersection point of all the medians of a triangle is called centroid.

The formula of centroid is

[tex]Centroid=\left(\dfrac{x_1+x_2+x_3}{3},\dfrac{y_1+y_2+y_3}{3}\right)[/tex]

Vertices of a triangle ABC are A(-3,0), B(3,0) and C(0,4).

[tex]Centroid=\left(\dfrac{-3+3+0}{3},\dfrac{0+0+4}{3}\right)[/tex]

[tex]Centroid=\left(\dfrac{0}{3},\dfrac{4}{3}\right)[/tex]

[tex]Centroid=\left(0,1.333...\right)[/tex]

Round each coordinate to the nearest tenth.

[tex]Centroid=\left(0,1.3\right)[/tex]

The coordinates of required point are (0,1.3). Therefore, the correct option is C.

The number 1-50 are placed in a bag. What is the probability of selecting:

A) a number greater than 50______
B) multiple of 5________
C) a prime number _________
D) a composite number_______

Answers

A: 0

B: 10/50

C: 15/50

D: 34/50

Answers:

A)  0B)  1/5 = 0.2C) 3/10 = 0.3D) 17/25 = 0.68

Nearly all of those answers involve a fraction form and an equivalent decimal form.

===========================================

Work Shown:

Part A

The largest number in the bag is 50, so we cannot select anything larger than that. The probability of getting something larger than 50 is 0% which converts to the decimal form 0

----------------------------

Part B

List out the multiples of 5 to get {5,10,15,20,25,30,35,40,45,50}

Note how 50/5 = 10, which shows there are 10 multiples listed above.

We have 10 items in that set out of 50 items in the set {1,2,3,...,49,50}. The probability of getting a multiple of 5 is 10/50 = 1/5. This converts to the decimal form 0.2

----------------------------

Part C

The prime numbers between 1 and 50 are:

{2,3,5,7,11,13,17,19,23,29,31,37,41,43,47}

There are 15 items in that list out of 50 items in the bag, so 15/50 = (5*3)/(5*10) = 3/10 is the answer. Converting to decimal form gets us 3/10 = 0.3

----------------------------

Part D

There are 50 items in the bag and 15 primes. This means there are 50-15 = 35 composite items. Well this is close to the actual count. It turns out that the number "1" is not composite, and it's not prime either. So we really have 35-1 = 34 composite values.

We get 34/50 = (17*2)/(25*2) = 17/25 as the answer. That converts to 17/25 = 0.68

It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data.

Which expression can be used to represent the cost of a cell phone bill when x is the number of GB of data used?


30 + 10

30 + 10

30x + 10
30, x, + 10

10x + 30
10, x, + 30

10x + 30x

Answers

Answer:

..........................

Answer:

Step-by-step explanation:

If M
then mABC = [ ? ]

Answers

Answer:

135

Step-by-step explanation:

m(abc)= m(abd) +m(dbc) = 65+60 =135

Belvedere climbs a 25-meter tower to ride a straight water slide. After
landing in the splash pool, he walks 14 meters back to the base of the
tower. What is the length of the slide (nearest tenth)?

Answers

Answer:

28.7

Step-by-step explanation:

a^2 + b^2 = c^2

25^2 + 14^2 = 821

Square root of 821 is 28.7.

Which set of numbers describe the side length of a right triangle

Answers

Answer: 3,4,5

Step-by-step explanation:

5² = 3² + 4²

25 = 9 + 16

25 = 25

The set of numbers 3, 4, and 5 describe the side length of a right triangle.

Option C is the correct answer.

What is the Pythagorean theorem?

Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

We have,

Set of numbers:

1, 2, 3

2, 3, 4

3, 4, 5

4, 5, 6

We need to find the set of numbers that describe the side length of a right triangle.

We will apply the Pythagorean theorem to all the sets of numbers.

Using 1,2,3.

1² = 2² + 3²

1 = 4 + 9

1 = 13

2² = 1² + 3²

4 = 1 + 9

4 = 10

3² = 1² + 2²

9 = 1 + 4

9 = 5

This is not true.

Similarly,

Set of numbers: 2,3,4 and 4,5,6 are not true.

Using 3, 4, 5

5² = 3² + 4²

25 = 9 + 16

25 = 25

This is true.

Thus,

The set of numbers 3, 4, and 5 describe the side length of a right triangle.

Option C is the correct answer.

Learn more about the Pythagorean theorem here:

https://brainly.com/question/14930619

#SPJ2

How to calculate slope for a line that goes through
two points.
10.2: Practice
y
Find the slope of the line through these points. Try
making a table.
-3
6
(5.-3) and (-1.6)

Answers

Answer:

The slope is [tex]m=-\frac{3}{2}[/tex]

Step-by-step explanation:

The slope point equation is given by:

[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

Here:

The first point is (x1,y1)=(5,-3)

The first point is (x2,y2)=(-1,6)

Then, the slope will be:

[tex]m=\frac{6-(-3)}{-1-5}[/tex]

[tex]m=\frac{9}{-6}[/tex]

[tex]m=-\frac{3}{2}[/tex]

 

I hope it helps you!

2x + 4 / 3 = -8 please help

Answers

x= -14/3 !


hope this helps

Answer:

X= -14/3

Step-by-step explanation:

Subtract \frac{4}{3}  

3

4

​  

 from both sides.

2x=-8-\frac{4}{3}

2x=−8−  

3

4

​  

 

2 Simplify  -8-\frac{4}{3}−8−  

3

4

​  

  to  -\frac{28}{3}−  

3

28

​  

.

2x=-\frac{28}{3}

2x=−  

3

28

​  

 

3 Divide both sides by 22.

x=-\frac{\frac{28}{3}}{2}

x=−  

2

3

28

​  

 

​  

 

4 Simplify  \frac{\frac{28}{3}}{2}  

2

3

28

​  

 

​  

  to  \frac{28}{3\times 2}  

3×2

28

​  

.

x=-\frac{28}{3\times 2}

x=−  

3×2

28

​  

 

5 Simplify  3\times 23×2  to  66.

x=-\frac{28}{6}

x=−  

6

28

​  

 

6 Simplify  \frac{28}{6}  

6

28

​  

  to  \frac{14}{3}  

3

14

​  

.

x=-\frac{14}{3}

x=−  

3

14

​  

 

Mary buys 8 cupcakes for $6 and Pete buys 12 cupcakes for $9. Who got the better deal PER cupcake or did they spend the same amount per cupcake?

Answers

Answer:

Step-by-step explanation:

Mary spends 8*6=48 dollars

Pete spends 9*12=108

Mary got a better deal per cupcake

Answer:

They spent the same amount per cupcake ($1.33)

Step-by-step explanation:

To solve this, we need to find the unit rate of cost per cupcake. To do that, we divide 8 by 6 and divide 12 by 9. When we do that, we get 1.33 for both. That means they spent the same amount per cupcake ($1.33).

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