MATHEMATICS HIGH SCHOOL

1.What is the cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron? a.triangle
b.square
c.rectangle
d.pentagon
5. What is the cross section formed by a plane that intersects three faces of a cube?
a.triangle
b.square
c.rectangle
d.pentagon

Answers

Answer 1
Answer:

1. Answer;

- Triangle

Explanation;

The cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron is a Triangle.

A tetrahedron also a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.

2. Answers

- Triangle

Explanation;

The cross section formed by a plane that intersects three faces of a cube is a Triangle. A cross section is the shape we get when cutting straight through an object. The shape of the cross-section of a solid depends upon the orientation of the cutting plane to the solid.
Answer 2
Answer: 1. The cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron is:
A ) triangle.
2. The cross section formed by a plane that intersects three faces of a cube is:
A ) triangle. 

Related Questions

Jacob trims trees and mows lawns during the summer months he earns 50$ per lawn and 120$ per tree he wants to purchase a car for 4,500if Jacob plans to mow 45 lawns this summer how many trees must he trim to earn at least 4,500
Suppose a normal distribution has a mean of 62 and a standard deviation of4. What is the probability that a data value is between 55 and 63? Round youranswer to the nearest tenth of a percent.O A. 55.9%O B. 56.9%O C. 53.9%O D. 54.9%
Kendall is designing a backyard garden. She makes a scale drawing of the garden where 3 inches is equivalent to 2 feet in the garden. The fence is rectangular in shape and is 21 inches long by 9 inches wide in the scale drawing. Use this information to determine the actual length and width of the fence in Kendall’s garden.
Which expression is equivalent to √-80a. -4 √5b. -4 √5ic. 4 √5id. 4 √5
A man wishes to cover his floor with tiles, each one measuring 3/4 inch by 2 inches. If his room is a rectangle, measuring 12 feet by 18 feet, how many such tiles will he need?A) 144, B) 1152, C) 1728, D) 9216, E) 20736Plz help me with this problem.. :-(

Use an area model to multiply (3x+7)(4x+5).
Fill in the blanks with the correct numbers.

Answers

Answer:

12^2 + 43x + 35

Step-by-step explanation:

(3x+7)(4x+5)

=(3x+7)(4x+5)

=(3x)(4x)+(3x)(5)+(7)(4x)+(7)(5)

=12x2+15x+28x+35

=12x2+43x+35

Cora uses ribbons to make three different sizes of bows.how much more ribbon does it take to make 2 large bows than 2 small bows? Explain how you found your answer.          Small 27 in large 49 in

Answers

2\ small\ bows:2\ *\ 27in=54in\n\n2\ large\ bows:2\ *\ 49in=98in\n\n98in-54in=44in\leftarrow answer

Kyle has 125 marbles. Fifty of these marbles are red and the reat are other colors. What is the ratio of the nunber of red marbles to the total of marbles expressed in simplest terms?

Answers

Answer:

The required simplest form is: (2)/(5)

Step-by-step explanation:

We have been given Kyle has 125 marbles.

And 50 out of total 125 are red and rest of them are other colours

that means other colour marble are 125-50=75

we need to find ratio of the number of red marbles to the total of marbles  

The ratio is: (50)/(125)=(2)/(5)

The required simplest form is: (2)/(5)

Answer:

Step-by-step explanation:

2/5

Help!!! Geometric series.

Answers

Not just any geometric series, but an infinite one. The rare taming of infinity.

Since the ratio r=2/5 is strictly between -1 and 1 the infinite geometric series converges. The first term is also a=2/5 so the sum is

S = (a)/(1-r) = (2/5)/(1 - 2/5) = \frac 2 3

Answer: 2/3

That formula isn't too hard to derive. We have

S = a + ar + ar^2 + ar^3 + ...

rS = ar + ar^2 + ar^3 + ...

S-rS = a

S = (a)/(1-r)

f(x)=4 x^(3)+a x^(2) +bx+c and there is a local min at x=-1 and an inflection point at x=-2. Find the values of a and b

Answers

f'(x)=12x^2+2ax+b\n0=12\cdot(-1)^2+2a\cdot(-1)+b\n0=12-2a+b\n\nf''(x)=24x+2a\n0=24\cdot(-2)+2a\n2a=48\na=24\n\n0=12-48+b\nb=36\n\n\boxed{a=24,b=36}

Fyi everyone, random231 is awesomeFor a craft project, four students each chose three pieces of wire from a box.

Don’s wires measure 3 inches, 5 inches, and 12 inches.
Margo’s wires measure 6 inches, 8 inches, and 14 inches.
Sonji’s wires measure 12 inches, 8 inches, and 17 inches.
Liam’s wires measure 16 inches, 8 inches, and 27 inches.

Which student chose pieces that can be used to construct a triangle?

a. Don
b. Margo
c. Sonji
d. Liam

Answers

Answer:

C. Sonji

Step-by-step explanation:

Since, a triangle is possible if the sum of any two sides is greater than third side,

The measure of Don’s wires,

3 inches, 5 inches and 12 inches

Since, 3 + 5 < 12  

Thus, by the above statement we can not make a triangle with The measure of Don’s wires.

The measures of Margo's wires,

6 inches, 8 inches and 14 inches,

Since, 6 + 8 = 14,

⇒ we can not make a triangle with The measure of Margo's wires.

The measures of Sonji's wires,

12 inches, 8 inches, and 17 inches,

12 + 8 > 17,

8 + 17 > 12

12 + 17 > 8

⇒ we can make a triangle with the measure of Sonji's wires.

The measures of Liam’s wires,

16 inches, 8 inches, and 27 inches

16 + 8 < 27

⇒ we can not make a triangle with The measure of Liam’s wires.

Hence, option 'C' is correct.
your answer would be sonji's
Other Questions
Taylor and Jesse are buying a magazine for $3.75 and a snack for $2.49. If they split the total cost between the two of them, how much will they each pay?
If the radius of mars is about 13.7% of neptune's radius, what is the radius of neptune?
Prove the diagonal connecting these vertex angles is perpendicular to the diagonal connecting the non-vertex angles
Using a twenty sided number cube, what is the probability that you will roll an even number or odd prime number? the number 1 isnt an odd prime. round to three decimals. A) 0.85 B) 0.8 C) 0.9 D) 0.75