how many spherical balls of diameter 15cm can be covered by 40 square metres of material

Answers

Answer 1

Answer:

It's very simple: divide the 40 m² area by area of 1 one sphere

[tex] \frac{40 \: m {}^{2} }{3.41 \times 15m {}^{2} } = 565[/tex]


Related Questions

6543549 ² × 4³ ÷8
it also states to simplify to the simplest form

Answers

The simplification form of the provided expression 6543549 ² × 4³ ÷8 is 3.4254×10¹⁴

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

We have a mathematical expression:

= 6543549² × 4³ ÷ 8

Using BODMAS

= 6543549² × 8

= 3.4254×10¹⁴

Thus, the simplification form of the provided expression 6543549 ² × 4³ ÷8 is 3.4254×10¹⁴

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Plsssssss answerrrrr

Answers

the answer I knew but I forgot at ate

Jessica Kim Val and twice

What is the answer? Thank you in advance

Answers

Coordinates are numerical lengths or angles that uniquely identify locations on two-dimension. The missing coordinates are coordinates 3 and 4.

What is the best way to understand the Cartesian coordinate plane?

A Cartesian coordinate plane is a two-dimensional plane with infinite dimensions. On an endless 2d plane, any two-dimensional figure may be drawn. A location is assigned to each point on a Cartesian plane.

It is the perpendicular distance between that point and the horizontal and vertical axes, which are commonly referred to as the x-axis and y-axis.

Location is then written as (a,b), where 'a' is the point's shortest distance from the y-axis, 'b' is the point's shortest distance from the x-axis, and 'c' is the point's shortest distance from the x-axis.

Coordinates are numerical lengths or angles that uniquely identify locations on two-dimensional (2D) surfaces or in three-dimensional (3D) space ( 3D ).

Mathematics, scientists, and engineers frequently employ a variety of coordinate systems.

Hence the missing coordinates are coordinates 3 and 4.

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The subject of the formula below is y.
y=X+p-q
Rearrange the formula to make x the subject.

Answers

Answer:

x=y-p+q

Step-by-step explanation:

y=x+p-q

x=y-p+q

If a(x) = 3x + 1 and (x)= x-4, what is the domain of (boa)(x)?

Answers

I am assuming you meant to write b(x) = x-4.

[tex](b \circ a)(x)=b(a(x))=b(3x+1)=(3x+1)-4=\boxed{3x-3}[/tex]

Since this is a linear function, the domain is all real numbers.

Shapes F and G are similar
Shape F has a perimeter of 180mm and an area of 2196mm².
Shape G has a perimeter of 300mm
Work out the area of shape G.
Give your answer to 1.d.p if decimal

Answers

Shape F has a perimeter of 180mm and an area of 2196mm² is similar to shape G with perimeter 300mm then area of shape is 6100mm².

As given,

Shapes F and G are similar

Perimeter of shape F=180mm

Area of shape F=2196mm²

Perimeter of shape G=300mm

Let xmm²be the area of shape G

Square of ratio of perimeter of similar shape =Ratio of area of similar shape

⇒(180 /300)² =(2196/x)

⇒9/25=2196/x

⇒x=(2196×25)/9

⇒x=6100mm²

Therefore, shape F has a perimeter of 180mm and an area of 2196mm² is similar to shape G with perimeter 300mm then area of shape is 6100mm².

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4 2/3 ÷ 2 1/3 ? what is the quotient?​

Answers

Answer: 42/21 or 2

Step-by-step explanation:

you first convert them to improper fractions, which is 14/3 and 7/3. Then, you multiply the reciprocal and get 14/3x3/7, and get 42/21. Simplify, and you get 2.

Pls solve with working out. Ok thanks

Answers

Answer:

AB and CD have the same midpoint, therefore they bisect each other.

Step-by-step explanation:

Find the midpoint of AB. Then, find the midpoint of CD. They are the same. The segments bisect each other. See image.

Work out the area of this triangle

Answers

Step-by-step explanation:

the area of a triangle is

baseline × height / 2

baseline and height must be at a right angle with each other.

so, in our case

6 × 11 / 2 = 3 × 11 = 33 cm²

Answer:

Area = 33 cm²

Step-by-step explanation:

[tex]\textsf{Area of a triangle}=\sf \dfrac{1}{2}bh[/tex]

where:

b is the baseh is the height (perpendicular to the base)

If we turn the triangle counterclockwise, so that the side that measures 6 cm is the base, we will see that the length that measures 11 cm is the height of the triangle (see attached).

Therefore:

b = 6 cmh = 11 cm

Substitute the found values into the formula and solve for A:

[tex]\implies \sf A=\dfrac{1}{2}(6)(11)[/tex]

[tex]\implies \sf A=\dfrac{1}{2}(66)[/tex]

[tex]\implies \sf A=33[/tex]

Therefore, the area of the triangle is 33 cm²

What is the probability of drawing a red card, replacing it, and then drawing an odd card?
4 red 5 blue 6 red 7 blue 8 blue

Answers

Answer:

4

Step-by-step explanation:

5

When planning road development, the road commission estimates the future population using the function represented in the table, where x is the time in years and f(x) is the total population.



What is the significance of 160,000 in the function?

the maximum population of the city
the expected population in 5 years
the initial population at the time of the estimation
the amount of increase in the population in 5 years

Answers

The significance of 160,000 in the function is the initial population at the time of the estimation.

The correct option is (C)

What is data?

A collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.

Given:

As per the table attached below:

F(x) signify the total population when the time was x hour.

So,  160,000 in the function signifies that the population at starting i.e., initial point.

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What is 2*4*6.5*24.5

Answers

Answer:

1274

it is 1274

Step-by-step explanation:

mark as brainlest for the answer thankyou

MARKING BRAINLIEST TO FIRST CORRECT ANSWER If quadrilateral JKLM had a translation where all the vertices were in the third quadrant, what would be the coordinates of the vertices?

Answers

If quadrilateral JKLM were in third quadrant then the coordinates will be (-1,0),(-4,-1),(-4,-2)(-1,-2)

Given Quadrilateral JKLM is in fourth quadrant and coordinates (1,0),(4,-1),(4,-2)(1,-2)

We know that the coordinates of x used to negative in third quadrant and positive in fourth quadrant. Coordinates of y used to negative in third and fourth quadrant.

So in order to change the coordinates from fourth to third we need to change the coordinates of x axis to negative and the coordinates will be :

Coordinates of J will change from (1,0) to (-1,0)

Coordinates of  K will change from(4,-1) to (-4,-1)

Coordinates of L will change from (4,-2) to (-4,-2)

Coordinates of M will change from (1,-2) to (-1,-2).

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Part A
? Question
Enter the correct answer in the box.
Recall that the width is x + 15, and the length is 49 less than 2 times the width. Write a simplified expression for the
length of the garage in terms of x.
(101 0² +

Answers

An expression is defined as a set of numbers, variables, and mathematical operations. A simplified expression for the length of the garage in terms of x is 2x-19.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

Given the width is x + 15, and the length is 49 less than 2 times the width. Therefore,  a simplified expression for the length of the garage in terms of x is,

Length = 2(x+15) - 49 = 2x + 30 - 49 = 2x-19

Hence,  a simplified expression for the length of the garage in terms of x is 2x-19.

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i need this for sparx hwk

Answers

Only b and c but i hope that i helped

A dilation maps (9, 12) to (3, 4). Find the coordinates of the point (8, 4) under the same dilation

Answers

Assuming the dilation is centered at the origin, the scale factor is 1/3.

This means the coordinates of the point (8,4) are [tex]\boxed{\left(\frac{8}{3}, \frac{4}{3} \right)}[/tex]

can someone please help mee i need the right answers please(30 points and i will give brainliest!!!)

Answers

Step-by-step explanation:

Funtion-A:

Given:

[tex]y = {x}^{2} - x - 6[/tex]

To find the x-intercepts set y to 0 and solve for x which is done below:

⇒x²-x-6=0⇒(x-3)(x+2)=0X=3 and -2

Therefore x-intercepts:(3,0),(-2,0)

To figure out the y-intercept , substitute 0 for x and simplify

⇒y=0²-0-6⇒y=-6

Hence, The y-intercept is (0,-6)

The vertex (0.5,-6.25)

(skipped the steps as you've already figured it out)

Function-B:

Likewise A:

X-intercepts:

⇒-x²+x+6=0⇒x²-x-6=0⇒x=3 and -2

Therefore,x-intercepts:(3,0),(-2,0)

Y-intercept:

⇒y=-0²+0+6

⇒y=6

Therefore, y-intercept (0,6)

The vertex:(0.5,6.25)

Inspection of the Parabolas:

The difference between the two parabolas is that The blue parabola is the result of reflection over x-axis of the red one.

Answer:

a.

The x-intercepts are 3 and -2

The y-intercept is -6

The vertex is (1/2 , -25/4)

b.

The two parabola are symmetric across the x-axis

Step-by-step explanation:

x² - x - 6

[tex]=x^{2}-2\times \frac{x}{2} +\frac{1}{4} -\frac{1}{4}-6[/tex]

[tex]=(x-\frac{1}{2} )^{2} -(\frac{1}{4}+6)[/tex]

[tex]=(x-\frac{1}{2} )^{2} -\frac{25}{4}[/tex]

The x-intercepts :

(x-1/2)² = 25/4

Then

x - 1/2 = 5/2 or x - 1/2 = -5/2

Then

x = 3 or x = -2

The y-intercepts :

We get the y-intercept by replacing x by 0 in the trinomial :

0² - 0 - 6 = -6

b.

we notice that :

-x² + x + 6 = -(x² - x - 6)

Then

-x² + x + 6

[tex]=-(x-\frac{1}{2} )^{2} +\frac{25}{4}[/tex]

The x-intercepts :

[tex]-(x-\frac{1}{2} )^{2} +\frac{25}{4}=0[/tex]

⇔ (x-1/2)² = 25/4

Then

x - 1/2 = 5/2 or x - 1/2 = -5/2

Then

x = 3 or x = -2

The y-intercepts :

We get the y-intercept by replacing x by 0 in the trinomial :

0² + 0 + 6 = 6

Required school supplies include 6 spiral notebooks and 2 binders. If the notebooks cost 90 cents and the binders cost $4.77, how much will you spend?
A. $22.85
B. $14.94
C. $15
D. $30

Answers

Answer:

Hey, You don't need to buy supplies. Just use your at home!

Step-by-step explanation:

Brainlest?

Answer: Algebra: 3 sub. spiral notebook, pencil pouch to hold colored pencils and ... Algebra 2: 2 or 3 subject spiral notebook (can use folder instead of binder).

Step-by-step explanation:

please help me with this problem!

Answers

Answer:

The choice A ;

[tex] \frac{1}{ {7}^{8} } [/tex]

Step-by-step explanation:

[tex] \frac{ {7}^{ - 6} }{ {7}^{2} } = \frac{ {7}^{ - 6 - 2} }{1} = {7}^{ - 8} = \frac{1}{ {7}^{8} } \\ \\ \\ or. \: \frac{ {7}^{ - 6} }{ {7}^{2} } = \frac{1}{ {7}^{ 2 + 6} } = \frac{1}{ {7}^{8} } [/tex]

Hii!

Answer:

Step-by-step explanation:

Use the rule of exponents.

If we divide two numbers with the same bases, we subtract the exponents.

7^-6/7^2=7^-6-2=7^-8

Now, if we have a negative exponent, we flip over the number.

7^-8=1/7^8

Great job!

Hope that this helped.

I need answer as fast as possible please.​

Answers

Step-by-step explanation:

a=110. x,55

y=180-(x+75)=50

w,75

b,110

x,40

y,30

How many complex roots does the equation 0=3x5−x4−5x2+1 have?

Answers

the equation has 5 complete roots

5

The given polynomial equation 3x⁵ − x⁴ − 5x² + 1 = 0 has two complex roots.

What is a polynomial?

A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.

The given polynomial equation below is:

0 = 3x⁵ − x⁴ − 5x² + 1

3x⁵ − x⁴ − 5x² + 1 = 0

The given polynomial equation is a polynomial of degree 5.

The simplest method is to solve it graphically using a graphing program.

Clearly, the polynomial equation is a degree 5 equation, hence it has a maximum of 5 roots.

We may now locate the roots of the equation using the graph.

Since there are 3 real roots, the remaining are two complexes, so there are 2 complex roots

Hence, the given polynomial equation 3x⁵ − x⁴ − 5x² + 1 = 0 has two complex roots.

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PLEASE HELP!!!!!
Estimate the solution to the system of equations.

y=4x−2
y=x+3


(Choice A)
x= 2/3
y= 4 2/3

(Choice B)
x= 1 2/3
y=3 2/3

(Choice C)
x= 1 2/3
y=4 2/3

(Choice D)
x=2/3
y= 3 2/3

Answers

The value of the variable x and y will be 1  2/3 and 4  2/3. Then the correct option is C.

What is the solution of the equation?

The solution of the equation means the value of the unknown or variable.

The equations are given below.

y = 4x − 2  ...1

y = x + 3    ...2

Subtract equation 1 from 2, then we have

 0 = 3x – 5

3x = 5

 x = 5/3

 x = 1  2/3

Then the value of y will be

y = 5/3 + 3

y = 14 / 3

y = 4  2/3

Then the correct option is C.

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if point (4, 5) is on the graph of a function, which equation must be true?


f(5)=4

f(5,4)=9

f(4)=5

f(5,4)=1

Answers

Answer:

f(4) = 5

Step-by-step explanation:

The notation used for a point is (x,y). The first number is the x and the second number is the y.

In function notation, you have f(x) = y.

The input number, x, is in the parenthesis beside the f. The output, y is all by itself on the other side of the equal sign.

For the point (4,5), 4 is the x so it goes by the f. 5 is the y so it goes by itself on the other side of the equal sign.

f(4) = 5

The solution is :  f(4) = 5, the equation must be true.

What is equation?

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

here, we have,

The notation used for a point is (x,y).

The first number is the x and the second number is the y.

In function notation, you have f(x) = y.

The input number, x, is in the parenthesis beside the f. The output, y is all by itself on the other side of the equal sign.

For the point (4,5), 4 is the x so it goes by the f.

5 is the y so it goes by itself on the other side of the equal sign.

f(4) = 5

Hence, The solution is :  f(4) = 5, the  equation must be true.

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Sahil chooses a number, divides it by 8 , adds 8 to the answer. Then multiples the answer with 8 . He obtains the result as 952 . The number he chooses in the beginning was


I'M IN LOVE WITH A FAIRYTALE
EVEN THOUGH IT HURTS
CAUSE I DON'T CARE IF I LOOSE MY MIND
I'M ALREADY CURSED ​

Answers

Answer:

888

Step-by-step explanation:

let the number be n then divide by 8 , that is [tex]\frac{n}{8}[/tex]

now add 8 to this

[tex]\frac{n}{8}[/tex] + 8 and finally multiply this by 8 and equate to 952

8([tex]\frac{n}{8}[/tex] + 8) = 952 ( divide both sides by 8 )

[tex]\frac{n}{8}[/tex] + 8 = 119 ( subtract 8 from both sides )

[tex]\frac{n}{8}[/tex] = 111 ( multiply both sides by 8 to clear the fraction )

n = 888

the number chosen was 888

Can someone explain how I do this?

Answers

Answer:

oh soooooooooooooooo sorry

Step-by-step explanation:

sorry

Answer:

12.5N

Step-by-step explanation:

See attached image.

Which of the following is a geometric sequence? A. 1, 1, 2, 3, 5, ... B. 2, 4, 6, 8, ... C. 7, 4, 1, -2, ... D. 1, ½, ¼, ⅛​

Answers

a geometric sequence is when each term is found by multiplying the previous term by a constant. in this case, the answer is D because each term is being multiplied by 0.5, hope this helps!

trigonometry is so hard help me​

Answers

Answer:

The answer is tanx

Step-by-step explanation:

This is because, when you graph the trigonometric functions, which can be reresented as: a*(trig sign)*bx + K, the period of the function for sin, cos, csc, and sec are all 2pi divided by "b". However, the formula to find the function of tan or cot graphs is pi divided by b. And, since we don't see any values being multilied to the x in the choices, and we calculate the period for each of them, it concludes that tanx, has a period of pi

Luis is going to an amusement park. The price of admission into the park is $20, and once he is inside the park, he will have to pay $4 for every ride he rides on. How much money would Luis have to pay in total if he goes on 6 rides? How much would he have to pay if he goes on r rides?


Cost with 6 rides:

Cost with r rides: need answers fast

Answers

Using a linear function, it is found that the costs are given as follows:

With 6 rides: $24.With r rides: C(r) = 20 + 4r.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Considering the price of admission and the price per ride, the y-intercept is of 20 and the slope is of 4, the cost for r rides is given by:

C(r) = 20 + 4r.

Hence, for 6 rides, the cost is given by:

C(6) = 20 + 4 x 6 = $44.

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What is the difference between the answers when numbers are switched in a subtraction?

Answers

The other one is usually negative or smaller than the first or viceversa

Solve the system of equations using the elimination method. 1.Solve {x + 3y = -15
{-3x + 2y = 23

Step 1- Multiply the equations to make the coefficients
match in either the x- or y-variable.
Step2- After you multiply, add or subtract the two equations.
Step 3- Then solve for the variables that is left.
The solution is ( , )?
check the solution in both original equations by using algebra

Answers

An equation is formed of two equal expressions. The solution is (-9,-2).

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the equation x + 3y = -15 and -3x + 2y = 23,

Step 1- Multiply the equations to make the coefficients match in either the x- or y-variable.

x + 3y = -15

3x + 9y = -45

Step2- After you multiply, add or subtract the two equations.

3x + 9y -3x + 2y = -45 + 23

Step 3- Then solve for the variables that is left.

11y = -22

y = -2

Step4- Substitute the value of y in any one of equations to solve for x.

x + 3(-2) = -15

x - 6 = -15

x = -9

Hence, The solution is (-9,-2).

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As you describe your treaty, be sure to answer the following questions:What provisions would it include?How would these differ from the ones in the Treaty of Versailles?Why would your treaty be more successful in preventing postwar economic downturns or military conflicts? The primary reason that Francisco Pizarro was able to conquer the Incas was ___________.a.they believed that he was a pale-skinned godc.he treated them with kindness and mercyb.he had more men and determinationd.they were already weak from civil war write three importance of a laptop to a student Which statement might have been made by a Federalist?A. Our biggest concern about the new government is corruption.B. We cannot ratify the Constitution without a Bill of Rights.C. We should only have an army in times of war.D. If the government is weak, the country won't run well. Which of the following is not an advantage of owning mutual funds? A. All of the options are advantages of mutual funds. B. They offer small investors the benefits of diversification. C. They treat income as 'passed through' to the investor for tax purposes. D. They offer a variety of investment styles What is heat?A. When energy is destroyedB. The flow of energy between two objects of unequaltemperatureC. When energy is createdD. Loss of energy Select the correct answer.Which word or phrase correctly completes this sentence?Lesmmorisent les dialogues pour la pice de thtre.OA.ballerinesOB. metteurs en scneOC. acteursOD. machinistes 1. Which graph describes the relation {(1, 2), (1, -2), (1, 2), (-2, 0)}? The A/C system refrigerant charge amount needs to be determined on a late-model vehicle. Technician A says that the emissions label contains the refrigerant charge amount. Technician B says the RPO decal contains the refrigerant charge amount. Who is correct Which of the following equations is equivalent to 2x 4 = 6? In which situation would new technology be most likely to cause a change in an existing theory about new structures a cell?The new technology makes it possible to detect and analyze a structure more rapidly.The new technology allows scientists to confirm the presence of an existing structure in a cell.The new technology makes it possible to produce additional structures that were not previously there.The new technology allows detection of a structure that could not be detected previously. Select the correct answer.Read the excerpt from paragraph 5 in the text.For all our success, there are still dangerous run-offs of toxins and pollutants into our streams; communities that don't have the knowledge or the resources to fully protect their water; regions where the wrong kind of development threatens our hard-won progress . . .How do the underlined words and phrases advance a point of view?A. They appeal to people's logic, suggesting that processes of change are slow and complicated.B. 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Please help me I need this for exam tomorrow and can u please show the working The yearly cost in dollars, y, at a video game arcade based on total game tokens purchased, x, is y = y equals StartFraction 1 Over 10 EndFraction x plus 60.x + 60 for a member and y = y equals StartFraction 1 Over 5 EndFraction x. x for a nonmember. Explain how the graph of a nonmembers yearly cost will differ from the graph of a members yearly cost. In her theory of health as expanded consciousness, Margaret Newman suggests that health professionals should concentrate on: Richard learned at an early age how to sell numerous items ranging from chocolate to small electronics. Many say his best education came from the streets he grew up on. This BEST illustrates Sternberg's concept of _____ intelligence. What two organizations was Mary Church Terrell instrumental in establishing?