Mathematics High School

Using diagonals from a common vertex, how many triangles could be formed from a
24-gon?

Answers

Answer 1

Answer:

22 triangles in a 24-gon.

Step-by-step explanation:

24−2=22

There are 22 triangles in a 24-gon.

Answer 2

Answer:

13 triangles in a 15-gon

Step-by-step explanation:

15-2=13

Related Questions

Lana has completed 65% of her math homework. Which fraction is equivalent to 65%?
A. 13/20
B. 65/1
C. 7/20
D. 13/2,000

Answers

Answer:

A) [tex]\frac{13}{20}[/tex]

Step-by-step explanation:

[tex]\frac{13}{20} = 065 = 65%[/tex]%

[tex]\frac{65}{1} = 65 = 100%[/tex]%

[tex]\frac{7}{20} = 035 = 35[/tex]%

[tex]\frac{13}{2,000} = 0.0065 = 0.0065[/tex]%

In the accompanying diagram of rectangle ABCD, diagonal AC is drawn, DE = 8, DE 1 AC, and m2 DAC = 55. Find the area of rectangle ABCD to the nearest integer.​

Answers

Answer:

sin (55)  =  DE / AD

AD  =  DE / sin (55)

AD  =  8 / sin (55)

And  

tan (55) = DC / AD

tan (55)  = DC / [8 / sin (55) ]

DC  =  8 tan (55) / sin (55)    

AD * DC  =

[8 /sin (55) ]  [ 8 tan (55) / sin (55) ]   =    136 units^2  

Step-by-step explanation:

f

Of the males surveyed, what proportion selected small T-Shirt size

Answers

Answer:

this question doesn't make sense

Evaluate the following expression when x = 3 and y = 4:
2x + y2 - 1

Answers

Answer:

21

Step-by-step explanation:

x = 3

y = 4

2x + y² - 1

2(3) + 4² - 1

2(3) + 16 - 1

6 + 16 - 1

22 - 1

21

John buys a bag containing 3 pounds of flour. He uses 12 ounces of the flour for a craft project. How much flour is left in the bag?

PLEASE ASAP

Answers

Answer:

36 ounces

Step-by-step explanation:

3 pounds is 48 ounces - 12 pounds used gives you 36 ounces which is 2 pounds and a quarter ( 2 1/4)

The graph shows a line and two similar triangles.

What is the equation of the line?

A. Y=3/2x
B. Y=2/3x
C. Y=3x
D. Y=2x​

Answers

Answer:

a y=3/2× Pls help me do me one

a

What is arc BDE?
Links=reported
Plz helppp!!

Answers

Answer:

around 228 degrees

Step-by-step explanation:

Answer: 143

Step-by-step explanation:

2/3 divided by 3/6 is : help asap​

Answers

the answer is 4/3 OR 1 1/3 :)

2/3 / 3/6= 1 1/3
Let me know if you need me to show how to solve it

2x + 6
96
solve for x using an algebraic equation

Answers

Answer:

v

Step-by-step explanation:

50 points! Given the vertices A(-4,6), B(6,6), C(6,2),find the circumcenter. I will mark brainliest. Random answers will be reported

Answers

Answer:

(1, 4)

Step-by-step explanation:

The circumcenter is the intersection of the perpendicular bisectors.

Find the two equations for the perpendicular bisectors and solve the system for intersection point.

Given the vertices A(-4,6), B(6,6), C(6,2)

Find the slope and midpoint of AB and BC

m(AB) = (6 - 6)/(6 - (-4)) = 0, this is a horizontal segment

M(AB) is

x = (-4 + 6)/2 = 1, y = (6 + 6)/2 = 6

Perpendicular bisector is a vertical line that passes through (1, 6) so its equation is:

x = 1

m(BC) is undefined as x-coordinates are same, so the segment is vertical

M(BC) is

x = (6 + 6)/2 = 6, y = (6 + 2)/2 = 4

Perpendicular bisector is a horizontal line that passes through (6, 4) so it is:

y = 4

The intersection of the lines x = 1 and y = 4 is the point (1, 4)

The circumcenter is point (1, 4)

Find the value of x.

Answers

Answer:

x = 13

Step-by-step explanation:

3x + 5 = 44

3x = 39

x = 13

Which words correctly complete the statement below?
APOR is dilated with the center of dilation at the origin and a scale factor of 0.5 to
obtain AP'O'R' The triangles' corresponding angles are
and their
corresponding sides are
therefore, the triangles are
congruent; proportional; similar
congruent; congruent; congruent
proportional; proportional; similar
proportional; congruent; congruent

Answers

Answer:

congruent; proportional; similar

Step-by-step explanation:

Reparte 280 euros entre 3 personas, de forma que la 1º reciba el triple que la 2º y esta el doble de la3º

Answers

Answer:

x = 31.11

Step-by-step explanation:

Let us assume the third person receives be  x

Now the second person receives be 2x

And, the second  be 3(2x) = 6x

The total is 280

Now the equation is

x + 2x + 6x = 280

9x = 280

x = 31.11

What method could be used to prove the triangle congruent?

Answers

[tex]\huge{\underline{\underline{\boxed{\sf{\red{Answer࿐}}}}}}[/tex]

B) SAS

Martina runs 8 miles in 72 minutes.
How many minutes does she take per mile?

Answers

Answer:

9 minutes per mile

Step-by-step explanation:

72/8 = 9 min/mile

Pls Help asap thx alot ​

Answers

Answer: 52.5cm²

Step-by-step explanation:

Firs, you have to split this composite shape into two separate shapes; a rectangle and triangle.

To work out the area of the rectangle you would have to do 8x5=40.

To work out the area you would have to find out the height of it first. So, to do this you would have to do 1+2=3 then do 8-3=5. Now we know the height is 5.

Then you have to use the formula base times height divided by 2 (b×h/2). So 5×5=25 then 25÷2=12.5

To then find the total area of this composite shape you would have to add the two areas together. So 40+12.5=52.5cm²

Hope this helps :)

whats the permiter and area of this triangle will mark brainleist?

Answers

Answer:

permiter 68ft

area 204ft²

Step-by-step explanation:

25ft+26ft+17ft=68ft

1/2×17ft×24ft=204ft²

I hope it's help

WILL GIVE BRAINLIEST!
Write the expression as a difference of squares.
25x2 − 4
Factor the difference of squares.
25x2 − 4

Answers

Answer:

(5x-2)(5x+2)

Step-by-step explanation:

Differences of squares is basically (a2-b2) = (a-b) (a+b)

a = 5x and b = 2 in this case

Brainliest is appreciated :)


1. At best buy they have a 50" TV that sells for $1450 and is on sale for 20% and sales tax is
7.5%. What is the final cost?

Answers

i think it’s 1,247. explanation: take 20% of 1450 and subtract it since it’s on sale, giving you 1160 after subtracting 290. then, take 7.5% of 1160 and add it. 7.5% of 1160 is 87, so if you add 87 to 1160, you get $1,247. hope this helped!
$1225 that’s the answer i got it right on the plato

Alex and Bill share a 24-ounce box of cereal. By the end of the week, Alex has eaten 3 8 of the box, and Bill has eaten 1 4 of the box of cereal. How many ounces are left in the box?

Answers

Answer:

9 ounces.

Step-by-step explanation:

Answer:

12 ounces on the box

Step-by-step explanation:

l have tried

Write an equation for the data in the table. Identify your variables.

Answers

First find the slope m. slope formula: [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

Let's use (0, -20) for x1 and y1; and (2, 10) for x2 and y2

[tex]\frac{10-(-20)}{2-0}[/tex] = [tex]\frac{30}{2}[/tex] = [tex]15[/tex]

Now find the y-intercept: the point where the graph crosses the y-axis. The y intercept always has an x value of 0. So -20 is the y-intercept

Use the slope formula [tex]y = mx + b[/tex]. Slope=m, y-intercept = b

y = 15x - 20

y is the money in the bank account in dollars

x is the day

Lexy and Lonnel applied to the same university. They looked up the average SAT score of students admitted to that university. Lexy’s SAT score was 30 points above the average score. Lonnel’s SAT score was 270 points below the average score. Which expression represents the difference in their scores?

❘-270 - 30❘
❘30 - 270❘
-❘30 - ❘270❘
-❘30❘ + ❘-270❘

Answers

9514 1404 393

Answer:

  (a)  ❘-270 - 30❘

Step-by-step explanation:

One score is -270 and the other is +30. The difference is either of ...

  |30 -(-270)|

or

  |-270 -30| . . . . . . matches choice A

Joy and Joey share a 18-ounce bucket of clay. By the end of the week, Joy has used
1
6
of the bucket, and Joey has used
2
3
of the bucket of clay. How many ounces are left in the bucket?

Answers

3 ounces
explanation: 1/6 of 18 is 3 so 18-3= 15 and 2/3 of 18 is 12 so 15-12=3 ounces


DUE TODAY HELP

It is not possible to plagiarize in math when the questions are multiple choice since
you don't have to write out your work.
True
False

Answers

I think true, unless there is a loop hole.

What Expression goes with the Phrase: "The Product of 4 and the
difference of 10 and b."
A. 4(b-10)
b. 4x10 -b
C. 4b- 10
d. 4(10-b)

Answers

Answer:

the correct answer is 4(10 -b)

A parabola with an equation of the form y=ax^2+bx+c has the point (3, 1) as its vertex. If (1, 3) also lies on this parabola, which of the following is another point on the parabola? A. (2, 6) B. (−3, −1) C. (5, 3) D. (2, 2) E. (−1, −3)

Answers

Answer:

(5,3)

Step-by-step explanation:

I plotted the point (3,1) on desmos graphing caculator and labeled it as the vertex.

Next I plotted the point (1,3).

Then I counted the spaces between point 1,3 and 3,1 as shown in the picture

Finally I graphed the point and connected the lines to make sure it looked like a parabola.

find lcm of 7 by 24 and 17 by 36​

Answers

Step-by-step explanation:

LCM for 7 by 24=168

LCM for 17 by 36=612

Janelle makes a profit of 10% when she sells a bag for $900
i. What is the cost price? ii. find out how much she should have sold it for to make a profit of 15%​

Answers

Answer:

i. 818.18

ii. 940.9

Step-by-step explanation:

SP = 900

or, CP + 10% of CP = 900

or, CP + 10/100 × CP = 900

or, 110CP = 90000

or, CP = 90000/110

CP = 818.18

for profit= 15%

SP = 9000/11 + 15% of 9000/11

= 940.9

Graph the equation y = 4x − 5 using slope and y−intercept.


on a graph

Answers

ANSWER:
The picture below is an image of what the graph should look like. Hope this helps!

I need help with my math homework
​

Answers

0.40 or 40%

Explanation:
Other Questions
A soup can in the shape of a cylinder has a diameter of 7 centimeters and a height of 15 centimeters. Which measurement is closest to the lateral surface area of the can in square centimeters? I NEED THE ANSWER ASAP! AND THE REAL ANSWER! There are thirteen species of finch found on the Galapagos Islands. These finches are commonly referred to as Darwins Finches and are a common example of natural selection and adaptive radiation.Which question would MOST help a scientist determine the level of biodiversity, that exists among the thirteen species of finch on the Galapagos Islands?Question 6 options:What is the most common beak color among the finches?How many finches are more than five years old?Which species of finch has the greatest average mass?What variation exists between the species for traits like beak size and shape? 4. What is the area of the composite shape below?do it step by step Which expression is equivalent to (3x^2y)^2 (2x^4y^2)^2? A. 10x^10y^6 B. 12x^24y^8 C. 24x^10y^7 D. 36x^12y^6 A boom is to be dropped from moving helicopter on the ground. Explain how can it hut the target ? The most important contribution made by the Black legislators during the Reconstruction period was:Atheir support of a free public educationBthe elimination of the KKKstrengthening the cotton industryDwestward expansion does it mean anything if u r panting really fast and uncontrollably like outta nowhere The point (3,-1) is on the line given by which equation below?HELPP MEE PLSS 5x and x+5 is this equivalent if so explain even if it isnt still explain lol A/An _________ narrative starts at the beginning and reveals each detail as it happens. subtract and simplify 5 6/9 - 2 1/3 If the length of SR is 4 meters and the length of ST is 8 meters , what is the length of PQ in meters Help Ill give Brainly est The digit 4 has a greater value in because its value is as much as its value in . Find the area of the polygon. Please help. Use the formula to calculate the number of diagonals in a 88-gon. Which word does NOT imply a change?A- excrescenceB- factionC- mollifyD- recant it is 15 years since the first line was constructed in this country and the present time there is not less than 50000 thousand miles and successful operation on this continent, having over 1400 stations, and employing upwards of 10,000 operations and clerks. The number of messages passing over all the lines in this country annually is estimated up at upwards of $5 million producing of a run of the age of $2 million.A. The expansion of educational opportunities for womenB. rapid communication of information to distance locationC. The increased ability of people to work at nightD. rapid population growth in the western territories In a survey 80 students were asked to name their favorite subject.30 students sad. English was their favorite subject. What percent of the students surveyed said that the English was their favorite subject. expression that is equivalent to 7 3/4 + 3 5/6 - 1 3/4 that uses addition instead of subtraction.