In how many ways can 21 be expressed as the sum of 3 prime numbers?

Answers

Answer 1

Answer:

I think by using a prime factor tree


Related Questions

What is 0.0475 converted to a percentage

Answers

Answer:

0.0475 = 4.75%

Step-by-step explanation:

Answer:

4.75%

Step-by-step explanation:

Look at the decimal number 0.0475 as 0.0475 out of one. Furthermore, percent means per hundred. So the task is to convert 0.0475 out of one to 0.0475 out of one hundred.

The equation to solve the problem is displayed below where x is the 0.0475 as a percentage.

[tex]\frac{0.0475}{1}[/tex]=[tex]\frac{x}{100}[/tex]

We solve the equation for x above by first multiplying each side by one and then multiplying each side by one hundred. Thus, the answer to 0.0475 as a percentage is:  4.75%

1. Name an example of a real-world data set, not yet mentioned in the course, where you would typically expect to see a normal distribution. Be sure to describe what the labels would be for the horizontal and vertical axis of the display. Then explain why you would expect a normal distribution. What range of data values would you expect to represent 1 standard deviation from the mean? (15 points; 10 for your answer, 5 for response to others' comments.)​

Answers

Answer:

1.The heights of students in a class, for example, would have a normal distribution. We expect a few students to be extremely tall and a few to be extremely short, but the majority will be in the middle. On the x-axis, we'll have heights, and on the y-axis, we'll have the frequency of the number of students with heights. According to the empirical rule, 68 percent of the data could fall within one standard deviation of the mean.

There are 9 cherry trees in Edgar's orchard, and he wants to plant more. It takes him an hour to plant each tree.
Let h represent the number of hours Edgar spent planting and c represent the total number of cherry trees he will have.

Answers

1: 1

3: 4

5: 9

7: 16

sorry if this doesn't make sense if it does i hope it helped:)

Given g(x) = -5x – 4, solve for x when g(x) = 1.

Answers

Answer:

g (1) = -5(1) -4

-5-4

-9............. .......

Step-by-step explanation:

-5(1)-4=-5-4=-9 Answer

hope it helps

what is the diameter of a circle with a circumference of 27 centimeters?

Answers

Answer:

diameter = 8.6 cm

Step-by-step explanation:

diameter = 27/π = 8.6 cm

Mrs Lee is setting up chairs for a band concert. The front row will have ten chairs. Thereafter each row will have four more chairs than the front row in front of it. Mrs Lee knows that there will be five rows. How many chairs will she need?

Answers

Hey Bestie it 90 chairs

There are 7 red marbles, 7 blue marbles, 7 yellow marbles, and 7 green marbles in a bag. If a person randomly selects 1 marble from the bag, what is the probability that the person selects a blue marble?​

Answers

Total marbles: 7 + 7 + 7 + 7 = 28

There is a total of 28 marbles. 7 are blue.

The probability is the number of blue/ total marbles = 7/28 which reduces to 1/4

The probability is 1/4

Answer:

have a good day/night may i please have a branllist

Step-by-step explanation:

1/3

There is 21 marbles and if you divided by 3 it gets 7.

7/21 is equal to 1/3

Therefore the possibility of picking a blue marble is 1/3.

there are an equal amount of all three colors of marbles in the bag, so the probability of selecting a blue marble is just 1/3.

A) 113
B) 92
C) 133
D) 117

Answers

D) 117
Because the 117 is opposite the variable

A) 45
B) 120
C)120
D) 60

Answers

Answer is B 50
Opposite sides are same

Find the volume of the following figure using unit cubes.

Answers

Answer:

Volume : 94

Step-by-step explanation:

2(4 x 5) = 40

2(3 x 5) = 30

2(3 x 4) = 24

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

40 + 30 + 24 = 94

If a truck used 25 gallons to travel 375 mies, how many miles would it travel on 4 gallons of gas?​

Answers

Answer:

93.75 miles if im not mistaken

Step-by-step explanation:

because the most miles is 375 so you would divide that number by four to see how many miles u can go before filling up again.

please help I will give brainlist!!​

Answers

Answer:

Step-by-step explanation:

ax+d>o

that ax+d is greater than o

pls mark me branliest

2. A right rectangular container is 10 cm wide and 24 cm long and contains water to a depth of 14cm. A stone is placed in the
water and the water rises 3.4 cm. Find the volume of the stone.

Answers

Answer:

This answer is A

Step-by-step explanation:

Answer:

Subtraction. 10.6 is your answer.

Step-by-step explanation:

14 - 3.4 = 10.6

subtract the rock's volume from the volume of the water.

What fraction of the whole are the blue piece, the orange piece, the red piece, and the purple piece. How do you know?

Answers

red: 2/4
blue: 1/4
Purple: 1/4

Answer:

blue piece is 1/2 because it takes up half of the square, the purple is only 1/4 because it would take 4 purple to fill the big square and the orange is half of the purple so it takes double of pieces so 8 pieces which is 1/8

Find the dimensions and maximum area of a rectangle if the perimeter is 52

Answers

Answer: l

=

16

,

b

=

10

Explanation:

Step-by-step explanation:

Perimeter of rectangle is  

p

=

2

(

l

+

b

)

=

52

,  

l

is length and  

b

is breadth.

Area of rectangle is  

A

=

l

b

=

160

l

=

160

b

;

2

(

160

b

+

b

)

=

52

or

(

160

b

+

b

)

=

26

or

160

+

b

2

b

=

26

or

160

+

b

2

=

26

b

or

b

2

26

b

+

160

=

0

or

b

2

16

b

10

b

+

160

=

0

or

b

(

b

16

)

10

(

b

16

)

=

0

or

(

b

16

)

(

b

10

)

=

0

b

=

16

or

b

=

10

If  

b

=

16

;

l

=

160

16

=

10

and if  

b

=

10

;

l

=

160

10

=

16

The dimension of rectangle is  

l

=

16

,

b

=

10

[Ans]

14. Molly puts two shapes together to make a new shape. The new shape has 6 sides and 6 vertices. Which two shapes did she use? ΔΔ OA in​

Answers

She used two trapezoids.

She put one trapezoid on top and one on the bottom.

The shape she ends up making is a hexagon.

What is the image point of (-9,-2) after the transformation T-2,-5

Answers

Answer:

(-11, -7)

Step-by-step explanation:

The original point is (-9,-2)

The transformation you have to do is (x-2 , y-5)

This makes it so that you move the original point 2 units to the left (as a negative sign in the x value is towards the left side where the negative units are) and 5 units downwards (as a negative sign in the y value is on the negative side of the y-axis which is down)

So, your final answer would be (-9-2,-2-5) which is (-11,-7)

Help help help please help help helpp

Answers

Answer:

(4⋅2x)+(-2+4)=

8x+2

2⋅3(1a+1a)=

6a+6b

I hope these are okay, and what you were asking for. I hope this helped! +*♡

Find the product. Simplify.
(a + 1)(a –5)=

Answers

Answer:

[tex](a + 1)(a - 5) \\ {a}^{2} - 5a + a- 5 \\ {a}^{2} - 4 a- 5[/tex]

What’s is Arccsc .866 problem

Answers

Answer:

arccsc refers to "arc cosecant", or the radian measure of the arc on a circle corresponding to a given value of cosecant. Technical note: Since none of the six trig functions sine, cosine, tangent, cosecant, secant, and cotangent are one-to-one, their inverses are not functions.

what is arccsc equal to? The value of the arccsc function of any argument is an angle in radians whose cosecant function equals the given argument, that is, y = csc-1x if and only if x = cosec(y) for - /2 < y < /2 and y.  ˗ˏˋ ❤︎ ࿐

Step-by-step explanation:

Enter the phrase as an algebraic expression.

the product of 38 and g

Answers

Answer:

38g

Step-by-step explanation:

Product means multiplication so:

The product of 38 and g is 38g

Which number best represents the probability that an event is very unlikely to occur?
A) 1.25
B) 0.50
C 0.97
D) 0.05
Helpppp fastttt

Answers

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Justice earned $358.60 this pay period for working 22 hours. How much will he earn if he works 30 hours for the same hourly rate.

Answers

Answer:

489

Step-by-step explanation:

I took 358.60 divided by 22 to find how much they were making per hour which is 16.3 therefore if I took 16.3 times 30 I would get my answer which is 489.

Answer:

$489

Step-by-step explanation:

Justice earns $16.30 per hour (358.6 ÷ 22)

16.3 x 30 = 489

A jewerler had a fixed amount of gold

Answers

Answer:

ohhhhh and who is the jeweler

What is one-fifth of a number, x, increased by 24 is equal to eight tenths of the same number, x.

Answers

Answer:

x = 40

Step-by-step explanation:

(x × [tex]\frac{1}{5}[/tex] )+ 24 = [tex]\frac{8}{10}[/tex] × x

0.2x + 24 = 0.8x

0.2x - 0.2x + 24 = 0.8x - 0.2x

24 = 0.6x

0.6x = 24

0.6x × [tex]1\frac{2}{3}[/tex] = 24 × [tex]1\frac{2}{3}[/tex]

x = 40

Answer:

x=40

Step-by-step explanation:

1/5x+24=8/10x

give like denominators

2/10x+24=8/10x

subtract 2/10x on both sides

24=6/10x

divide 24 by 6/10, or multiply by 10/6

x=240/6

refine/simplify

x=40

What integer is the opposite of 32 degrees Celsius below zero?

Answers

Answer:

-32?

Step-by-step explanation:

Plz help this is due today i would have done it myself but i totally forgot about these so PLZ HELP AND NO LINKS AND NO GROSS PICTURES OR I REPORT.

Answers

Answer:

A,B,D

Step-by-step explanation:

Pls Help! Put a proper answer! And do not put a link or I will report you!
Two times the sum of a number, x, and 9 is at most four times the number. Write and solve an inequality to find the value of the number.

Answers

Answer:

2(x+9)≤4x

Step-by-step explanation:

2x+18≤4x

-18       -18

2x≤4x-18

-4x  -4x

-2x≤18

/-2  /-2

x≥9

Mrs. Rhodes is building the ramp shown below and she wants to paint it blue. How much paint will she need to cover the entire surface?

Answers

Answer:

2/3 of paint I believe because of the amount shown

help please , i need it asap ! ty

Answers

Answer:

7.5

Step-by-step explanation:

Answer:

Step-by-step explanation:

If the one side = 3 and the other side (4.5) is supposed to be the same all it is is 4.5/3 which is 1.5. 1.5 times 5 ( the bottom side) is 7.5! X=7.5

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