solids that can made by equilateral triangle

Answers

Answer 1

Answer:

the tetrahedron, octahedron and icosahedron

Answer 2

Answer:

tetrahedron, octahedron, icosahedron


Related Questions

The diameter of a cylindrical container is 22cm. If the volume of the container is 1331cm³, calculate its height.

Answers

Answer:

3.5cm

Step-by-step explanation:

Vol=πr²h

Transposing for h,=vol÷πr²

where r=22/2=11cm and taking π=3.142

h=1331/(3.142×(11)²)=3.5cm

Answer is 3.5 cm

Step by step

For cylinders we know
Volume = pi x radius ^2 x height

We know volume is 1331
We know pi = 3.14
We know radius is 11 (diameter is 22, so radius is 1/2 of that, so r=11)
We are looking for height “H”

Fill in the numbers into the formula

1331 = 3.14 x 11^2 x H

1331 = 3.14 x 121 x H

1331 = 380 H

Divide both sides by 380 to solve for H

1331/ 380 = 380/ 380 H

3.5 = Height

Problem solved!


consider a traingle of base 1 cm and height 1 cm.on the same base and on the same side, second traingle is drawn with half the previous height.if this process continues as many times as possible what will be the total area of all the traingles thus formed????

Answers

As n approaches infinity, the area of the triangle decreases until it equals 1, resulting in a triangle of area 1.

What is a geometric summation equation?

Every term in a geometric sequence has a fixed relationship to the term before it. A popular representation of a geometric sequence containing the initial term a, the common ratio r, and a finite number of terms is  a, a*r, a*r₂, ..., a*r(ₙ₋₁).

According to given value;

The area of first triangle =(1)*(1)*(1/2)

                                         =1/2

The area of second triangle =

(1/2)*(1/2)

                                                        =(1/2)²

The area of third triangle =(1/2)²*(1/2)

                                                   =(1/2)³

The area of [tex]n^{th}[/tex] triangle = (1/2)ⁿso the total area of all triangle is formed;

               =(1/2)+(1/2)²+(1/3)³+.......+(1/2)ⁿ

               =(1)-(1/2ⁿ)

The formula of geometric summation equation;

        = a₁-(1-qⁿ)/(1-q)

As n goes to infinity, the area goes to 1.

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y is less than -2 in inequality notation

Answers

Given statement 'y is less than -2 ' in inequality notation would be, y < -2

In this question we have been given a statement 'y is less than -2'

We need to write given statement in inequality notation.

We know that, an inequality is a mathematical expression where two non-equal mathematical expressions or numbers are compared.

We know that we use '<' notation for less than.

Consider given statement:

y is less than -2.

⇒ y < -2

Therefore, given statement 'y is less than -2 ' in inequality notation would be, y < -2

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HELPP PLEASE 70 POINTS

Answers

1st option i believe

28.007 x 10² = _____

Answers

28.007 x 10² = _2800.7_

[tex] \red{ {10}^{2} } = 100 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = \red{100} \times 28.007 \: \: multiply \: the \: numbers \\ = \green {2800.7}\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:[/tex]

that's all :)

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[tex] \: \Large \mathbb{SOLUTION:}[/tex]

[tex] \: \: \text{28.007 × 10² }[/tex]

[tex] \: \: \text{Calculate the power}[/tex]

[tex] \: \: \text{28.007 × 100 }[/tex]

[tex] \: \: \text{Calculate the product or quotient}[/tex]

[tex] \: \: \text{\underline{\underline{2800.7}}}[/tex]

The quotient of 24 and d

Answers

Answer:

The quotient of 24 and d would be [tex]\frac{24}{d}[/tex]

Step-by-step explanation:

Quotient is the answer of a division problem. So, you would divide 24 by d.

On a shopping trip, Jeffery buys 3 sweaters and 5 pairs of jeans for $160. Eric also purchases 6 sweaters and two pairs of jeans for the same price. What is the difference in price of a sweater and one pair of jeans?

Answers

Answer:

Step-by-step explanation:

It would most likely be 0, but I am not sure.

Convert 5.764764764 ... to a rational expression in the form of a over b , where b ≠ 0

Answers

If x = 5.764764764…, then 1000x = 5764.764764764…, so that

1000x - x = 5764.764764764… - 5.764764764…

999x = 5759

x = 5759/999

the ratio to the number of adults to the number of chirldren at a restaraunt is 3 to 7 whats a equavielent fraction

Answers

The equivalent fraction is: 3/7 or 6/14 or 15/35

What is an equivalent fraction?

Equivalent fractions are those that, despite their visual differences, reflect the same value. You will have consumed half of a cake, for instance, if you have one, divide it into two equal pieces, and then eat one of the pieces.

Given:

Ratio of number of adults to that of children = 3:7

3 : 7 = 3/7

There can be 'n' number of equivalent fractions for this fraction, such as: 3/7, 6/14, 15/35

Hence, The equivalent fraction is: 3/7, 6/14, 15/35

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What are the values of (-2)^4 and -2^4?
8 and -8
16 and 16
-8 and -8
16 and -16

Answers

Choice: D

16 and - 16
1-24
Determine the sign
24
Write as a multiplication
2×2×2×2
Multiply
Solution
16

-24
Write as a multiplication
-2×2×2×2
Multiply
Solution
-16

A rectangle PQRS is dilated about the origin to form a new rectangle P ’Q ’R ’S ’, as shown. What is the scale factor of the dilation?

Answers

Answer:

3

Step-by-step explanation:

Point p was on -1, 2

Point p' was on -3, 6

IF you divde p' by p you get 3, so the dialation is 3.

Which of the following describes a situation in which the total distance a baseball player travels is zero meters from his starting point? (5 points)

Answers

Situation (B) best describes how a baseball player travels a total distance of zero meters from his starting point, that is, the player runs 3 meters forward and then 3 meters in the opposite direction.

What is the distance?Distance is a numerical or quantifiable measurement of the distance between two objects or points. The distance can refer to a physical length or an estimate based on other criteria in physics or everyday usage (e.g. "two counties over"). Because spatial thinking is a rich source of conceptual metaphors in human thought, the term is also frequently used figuratively to mean a measurement of the amount of difference between two common pieces (such as statistical distance between probability distributions or edit distance between text strings) or a degree of detachment (as exemplified by the distance between people in a social network). The concept of a metric space is used in mathematics to formalize most such notions of distance, both physical and metaphorical.

According to the options:

Options (A), (C), and (D) is wrong as there the basketball travels some sought distance from the starting point. It is only in option (B) in which the total distance of the baseball player comes to 0 as he runs 3 meters forward and then runs 3 meters in the opposite direction.

Therefore, situation (B) best describes that the total distance a baseball player travels is zero meters from his starting point that is, the player runs 3 meters forward and then runs 3 meters in the opposite direction.

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The complete question is given below:
Which of the following describes a situation in which the total distance a baseball player travels is 0 meters from his starting point? (5 points)

a) The player runs 4 meters forward and then runs 3 meters in the opposite direction.

b) The player runs 3 meters forward and then runs 3 meters in the opposite direction.

c) The player runs 3 meters forward and then runs 4 meters in the opposite direction.

d) The player runs 3 meters forward and then runs 0 meters in the opposite direction.

a medical researcher obtains a sample of adults suffering from diabetes. she randomly assigns people to a treatment group and to a placebo group. the treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same time frame. at the end of three months the​ patients' symptoms are evaluated.

Answers

This is an example of an experimental study since the researcher chose who would get medicine and who would receive a placebo.

What is Experimental Study?

a quantitative research technique that controls other pertinent variables while observing the effects of changes in the study's key variables The Impact of Product Modularity on Supplier Integration: A Multi-Objective Approach2 provides further information. In experimental research, participants are randomly divided into distinct groups (such as experimental and control groups) in order to ascertain the causal relationship between a given condition (an independent variable) and a certain outcome (dependent variable).An illustration of an experimental research on the subject would be to assign people at random to either spend 10 minutes on their  page as the experimental treatment, or spend the same amount of time on other websites (control group).

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Convert the decimal below to a fraction in simplest form.
0.166

Answers

(166÷2)

______

(1000÷2) = 83/500

Xochitl earned $94.80 at her job when she worked for 4 hours. What was her hourly
wage, in dollars per hour?

Answers

Answer: $23.70/hr

Step-by-step explanation:

x= hourly wage

4= the number of hours worked

$94.80=total earned

4x=$94.80

x=$94.80/4

x= $23.70/hr

She earned $23.70 per hour

A portion of the periodic table is shown below. Which column of elements would be most likely to chemically combine with sodium in a 1:1 ratio?​

Answers

Step-by-step explanation:

chlorine cl when combines with sodium na

Nacl will form so chlorine

annie measured a city park and made a scale drawing. the scale of the drawing was 1 millimeter : 4 meters. the soccer field is 28 millimeters long in the drawing. how long is the actual field?

Answers

Answer:

Step-by-step explanation:

34 millimeter

28 millimeters x 4 = 112 meters

the teacher separated her class of fifty-eight students into two groups. one group has 6 more than thrice as many students as the other group. how many students are in each group?

Answers

Students in one group is 45

Students in another group is 13

teacher separated her class of fifty-eight students into two groups

Number of groups =2

one group has 6 more than thrice as many students as the other group

Let one group has x students

another group has y students

x+ y = 58  . . . . . 1

x= 6+3y  

Substitute x= 6+3y   in  . . . 1

6+3y +y = 58

4y=52

y=13

x=6+3y=6+3(13)

 = 6+39

 = 45

Students in one group is 45

Students in another group is 13

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what’s the answer to this???

you have to find where it increases, decreases, and where it’s constant….

help..

Answers

Our intervals will represent the x-values
We know that since there's an arrow pointing
to the left of the line that it goes on infinitely
Same thing when the arrow is going to the
right
Then we can just looking at the x-values on
the graph for the intervals where it starts and
stops

-3,3
inf, -3
3,inf

i hope this helps

Please help me it doesn't have to be quickly just help

Answers

Answer:

3 to the power of 3

Step-by-step explanation:

Answer:

1. 8x

2.4x^2

3.3^x

Step-by-step explanation:

I took the test

Diana usually drives at an average rate of 30 mph. If Diana drives at an average rate of x mph, how long will it take her to get to Tony's house?

Answers

Diana drives for two hours at a speed of 30 mph, covering a total distance of 60 miles to get to Tony's house.

What exactly is average speed?Average speed is described as the ratio of a body's total distance traveled to the total time required to reach its destination.The total distance covered by the element in a given time interval is the average speed. A scalar quantity is average speed. It is depicted by magnitude and lacks direction.

Diana drives for two hours at a speed of 30 miles per hour.

To calculate the distance she will travel

Average speed = total distance / total time

Total time = two hours and the average speed = 30 mph

30 mph = total distance / two hours

Total distance = 30 × 2

Total distance = 60 miles

Therefore, Diana drives for 2 hours at a speed of 30 mph, so the total distance traveled is 60 miles to get to Tony's house.

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A rectangular hotel room has a perimeter of 72 feet. Its area is 320 square feet. What are the dimensions of the room?

Answers

Answer

Step-by-step explanation:

Do you think it would be better to use breaking apart in the distributive property or compensation to find the product of five times 328? explain why and show how to find the product.

Answers

Yes it would be better to use breaking apart in the distributive property or compensation to find the product of 5 x 328 .

what is distributive property?

This property states that multiplying the total of two or more addends by a number will produce the same outcome as multiplying each addend by the number separately and then adding or substracting the results together .like in subtraction  A(B-C)= AB-AC

In other words, an equation of the type A (B+C) can be solved as A (B+C) AB+AC in accordance with the distributive property.

This characteristic also holds for subtraction.

5 x 328

= 5(300+28)

= 5 x 300 + 5 x 28

= 1500 + 140

= 1640

Hence, it would be better to use breaking apart in the distributive property or compensation to find the product of 5 x 328 .

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whats the pattern of 1,1,11,6,6,16,11,11,21,16

Answers

The pattern is 1, 1, 11, 6, 6, 16, 11, 11, 21, 16, 16, 26.

Given,

The pattern: 1, 1, 11, 6, 6, 16, 11, 11, 21, 16.

Here,

First and second term:

1,1 = same number repeat for two times.

Third term:

11 = preceding term + 10

That is, 1 + 10 = 11: That is the third term.

As follows:

Fourth and fifth term:

6, 6 = same number repeat for two times.

Sixth term:

6 + 10 = 16

Seventh and eighth term:

11, 11 = same number repeat.

Ninth term:

11 + 10 = 21

Tenth term is given: 16

Now we have to find eleventh and twelth terms:

Tenth and eleventh should be same number repeat for two times:

16, 16

Twelth term:

16 + 10 = 26.

Now we can complete the pattern:

1, 1, 11, 6, 6, 16, 11, 11, 21, 16, 16, 26.

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Kara's Custom Tees experienced fixed costs of $800 and a variable cost of $3 per shirt. Write an equation that can be used to determine the total costs encountered by Kara's Custom Tees when x shirts are produced. Then, determine the total cost of producing 75 shirts.

Answers

The total cost of producing 75 shirts will be $1050.

It is given that Kara's Custom Tees experienced fixed costs of $800 and variable cost of $3 per shirt.

We have to find an equation and also the total cost of producing 75 shirts.

What is algebra ?

Algebra is the branch that deals with various symbols and the arithmetic operations such as addition , multiplication , etc.

As per the question ;

Fixed cost = $ 800

and

Variable cost per shirt = $3.

If x shirts are produced then ; then equation will be ;

= 800 + 3x

And total cost of 75 shirts will be ;

= 800 + 3 × 75

= 800 + 225

= $ 1050

Thus , the total cost of producing 75 shirts will be $1050.

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A​ town's population is 42,975 . About 125 people move out of the town each month. Each​ month, 175 people on average move into town. A nearby town has a population of 45,225. It has no one moving in and an average of 175 people moving away every month. In about how many months will the populations of the towns be​ equal? Write an equation to model the situation. Then solve the equation and answer the question.

Answers

The number of months when they will be equal is 45 months.

How to calculate the equation?

The equation for the first town will be:

= 42975 + 125x

The equation for the second town will be:

= 45225 + 175x

The number of months when the populations of the towns will be equal will be:

42975 - 125x = 45225 - 175x

- 125x + 175x = 45225 - 42975

50x = 2250

x = 2250 / 50

x = 45

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33/25 as a decimal rounded to the nearest tenth

Answers

Answer:1.3

Step-by-step explanation:

33/22=1.32

Round to nearest 10th

1.32=1.3

Jill's plant is 15 inches tall and grows 0.25 inches each week, Mox's plant is 18 inches fall and grows 0.25 inches each week. At this rate, will Jill's plan! ever be faller than Max's Explain​

Answers

No, Jill’s plant will never be taller than Mox’s because both of their plants grow at the same rate (0.25 inches per week).


√-100=____ + _____i

Answers

Answer:

[tex]10 + 1i[/tex]

Step-by-step explanation:

[tex]i = \sqrt{-1}[/tex]

[tex]\sqrt{-100} = \sqrt{100} * \sqrt{-1}[/tex]

[tex]\sqrt{-100} = 10 + 1i[/tex]

Can please anyone help me with this

Answers

Answer:

Step-by-step explanation:

im not sure but yea

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