Explain why you divide by 2 for triangles and why you divide by 3 for pyramids

Answers

Answer 1

Answer:

triangles are half a rectangle/square. So thats why you divide by 2. diving by 2 is also multiply by 1/2.

pyramids are in 3 dimensions, so since they are like half, but in three dimensions, you divide by 3, in other words multiply by 1/3.

Step-by-step explanation:


Related Questions

Show work pleaseeeeee

Answers

Multiply 5 x 8= 40 -the total of one triangle
40x3= 120 -is the total of the three triangles

5x3=15- the total measure of the circle top part

120+15= 135

ANSWER: 135

BRAINLIST??

Answer:

148cm²

Step-by-step explanation:

seriously why, just why? okay, hold on, we're gonna be here a while

Let's start with the triangles, they're all equal, and we already have their measurements and the formula for the area of a triangle is base x height ÷ 2, so all we have to do is plug:

5 x 8 = 40

40 ÷ 2 = 20

Now we have to multiply by 3 because there's 3 of these abominations:

20 x 3 = 60

So we put that on a back burner while we do the semicircle

So the formula for the area of a circle is pi x radius², so we have to find the radius. We know that each of the triangle bottoms is 5cm, so we just multiply by 3:

5 x 3 = 15

So the diameter of the semicircle is 15cm, now we divide that by two to find the radius:

15 ÷ 2 = 7.5

Now we just plug that into our formula (we're using 3.14 for pi)

7.5² = 56.25

3.14 x 56.25 = 176.625‬

Usually, we'd stop there, but it's only half of a circle, so:

176.625 ÷ 2 = 88.3125‬

So now we add both of our areas:

60 + 88.3125‬ =

148.3125‬

Normally, that would be the answer, but since we're supposed to be estimating, we round it to the nearest whole number:

148.3125 -> 148

So the area of the figure is 148cm²

if this is wrong, let me know so I can fix it

hope this helps:)

Elise is making 42 chocolate ice cream sundaes. The number of quarts of ice cream she needs is directly proportional to the number of people served. Suppose it takes 3 quarts of ice cream to serve 18 people. Which statements are correct for this situation?

A) Elise needs 7 quarts of ice cream
B) Elise needs 6 quarts of ice cream.
C) The constant of proportionality is 1 /6.
D) The constant of proportionality is 6/ 1.
E) The constant of proportionality is 1/ 8.

Answers

Answer:

A (Elise needs 7 quarts of ice cream)

Step-by-step explanation:

Okay so we know that Elise is serving 42 people, since she's making 42 chocolate ice cream sundaes.

Since it takes 3 quarts to serve 18 people, we know that the amount of people divided by 6 will equal the quarts.

So 42 people divided by 6 equals 7 quarts.

i hope this helps !!

Answer: A and C

Step-by-step explanation: USA TEST PREP

today i feel like giving out brainly points : )

Answers

Answer:

84

Step-by-step explanation:

14x6

Answer:

hui

Step-by-step explanation:

84

Please help me this is due in 3 minutes

Answers

Answer:

a

Step-by-step explanation:

Answer:

my answer would be a

Step-by-step explanation:

a=2 /3=0.667

B=14/9=1 5/9 =1.556

c)=13/2 =6  1/2=6.5

d=5/ 8=0.625

What is the solution
Please help

Answers

Answer:

Step-by-step explanation:

1.)

3x=3

x=1

2+y=0

y=-2

solution: (1,-2)

2.)

6y = -36

y = -6

-4x+12 = -12

-4x=-24

x = 6

solution: (6,-6)

Answer:

Top: x=1, y= -2

Bottom: x= 6, y= -6

Step-by-step explanation:

Top:

Isolate x for y: 2(3+y) + y = 0  

Simplify: 6+3y=0

Isolate y for 6+3y=0: y = -2

For x= 3 + y: x = 1

Bottom:

Isolate x for : -4x - 2y= -12:     x= [tex]\frac{-6 + y}{2}[/tex]

Simplify: 6y+ 12 = -24

Isolate y for 6y+ 12 = -24: y = -6

For x= [tex]-\frac{-6 -6 }{2} = 6[/tex] : x = 6

someone help plz i will give brainliest for all the answers answered

Answers

Answer:

1. slope: 4. y-intercept: (0,-2)

2. slope: 0.6. y-intercept: (0,-4)

3. -1. y-intercept: (0,13)

Step-by-step explanation:

Help me out pls!!!!
Side note: Tell me your favorite Victorious character. If you say mine, i'll give you a brainliest.

Answers

mine is jade! she’s pretty and funny

DO NOT SEND ME PDFS OR WILL REPORT ANSWER CORRECLY AND WILL GIVE BRAINLIEST
Which graph is misleading? Explain your answer with at least three complete sentences.

Answers

Answer:

The first graph is misleading because all it is is just bigger. However the second graph is the same 80 million ton barrel twice. This means that its 80 +80 which indeed is 160 million tons.

Step-by-step explanation:

Please help me and serious answers only!

Answers

Answer:

5(2c - 3) = 3(3c - 5)

=> 10c - 15 = 9c - 15c

=> 10c+15c = 9c + 15c

=> 25c = 24

=> c = 24/25

Answer:

c=0

Step-by-step explanation:

Remove the parentheses

10c - 15 = 9c - 15

10c = 9c

Move the variable to the left

10c-9c=0

Collect like terms

then solve it and you'll get c=0

Hope this helps.

is there anyone from edge that already did "Performance Task: Vacation Adventures"?
im actually confused on the questions below.


What is the approximate distance from Chicago to New York City? Use a proportional relationship to solve the problem. Show your work.

What is the approximate distance from Denver to Chicago? Use a proportional relationship to solve the problem. Show your work.

You plan to begin your journey in San Jose and make stops in Denver and Chicago on your way to New York City. Your father says that your journey will be about 3,000 miles. Is this a close estimation of the distance? Explain your reasoning.

Answers

Answer:

"1 unit" is about 7.5 on the scale and the distance between Chicago and New York is about 10.8 on the scale.

Step-by-step explanation:

The scale factor on the map is 557.

What is scale factor?

When a shape is magnified and each side is multiplied by the same number, this is known as a scale factor. The scaling factor is this figure. Scale factors are used on maps to accurately depict distances between locations.

We have,

1 unit = 557 miles.

now, we have to find the scale factor,

i.e., the amount that must be multiplied by the map's unit of measurement to obtain the original distance between the two locations.

So, it means that the x unit = 557 x miles.

i.e. the scale factor = 557

Hence, The scale factor on the map is 557.

learn more on scale factor here:

brainly.com/question/5992872

#SPJ7

If anybody can help me with this 10 questions

1.The product of a number and negative seven is at most negative eighty-four? What is the smallest value of the number?


A(-12)

B(-13)

C(13)

D(12)

2.Flag question: Question 2
A number increased by twenty-two is less than fourteen. What value must the number be less than?

A(7)

B(-8)

C(8)

D(-7)

3.Flag question: Question 3
The local school will only have a drama class if at least 18 students sign up. So far 8 students have signed up for the class. At least how many more students need to sign up?
Group of answer choices

A(12)

B(9)

C(10)

D(11)

4.Flag question: Question 4
The sum of twice a number and four is at most sixteen. What is the largest value of the number?

A(10)

B(4)

C(6)

D(3)

5.Flag question: Question 5
If you keep at least $525 in your bank account, you will not have to pay service charges. Your account balance is $814 and you spend $10 each day for lunch. In how many days will you need to make a deposit to avoid paying service charges?

A(28)

B(30)

C(29)

D(27)

6.Flag question: Question 6
Your uncle saved $2,500 to take a vacation. His plane ticket is $728. What is the maximum amount of money that he can spend on everything else?

A($3,228)

B($2,500)

C($1,772)

D($343)

7.Flag question: Question 7
Maria is flying to California. When she gets there she plans to rent a car. The cost for the car rental is $42 per day. If Maria has budgeted $200 for the car rental, what is the maximum number of days she can keep the car?

A(2)

B(4)

C(5)

D(3)

8.Flag question: Question 8

Bill wants to drive to Atlanta, Georgia. Atlanta is 1,450 miles from Bill's home. If Bill has 3 days available that he can drive to Atlanta, what is the minimum number of miles that he can drive each day?

A(483)

B(484)

C(485)

9.Flag question: Question 9
Jane and her sister spent at least $475 on a shopping spree. If Jane spent $260, what is the smallest amount that her sister spent?


A($215)

B($214)

C($217)

D($216)

Flag question: Question 10
Twelve is no more than seven less than a number. What is the minimum value of the number?

A(18)

B(20)

C(19)

D(5)

Answers

Answer:

1.) Option D (12)

2.) Option B (-8)

3.) Option C (10)

4.) Option C (6)

5.) I am a bit confused cuz the answer says 28.9 which rounds to 29 but 28.9 is not a real life situation number so i would go with option A (28)

6.) Option C (1,772)

7.) Option B (4)

8.) I'm not sure, sorry

9.) Option A (215)

10.) Option C (19)

Hope this helps!

Calculate the area of the triangle below.

Answers

Answer:

D- 52.5

Step-by-step explanation:

12ft + 3ft = 15ft

base= 15ft

height=7ft

area = 0.5 * b * h

area = 0.5 * 15 * 7

Answer:

52.5 ft^2

Step-by-step explanation:

7ft * 12ft = 84

84 / 2 = 42

7ft * 3ft = 21

21 = 2 = 10.5

42 + 10.5 = 52.5

To solve for a right sided triangle simply multiply the sides as if you were solving a square and then divide it by two. If you split these into two right sided triangles you can just solve each one and then add them

help. i need help ::>-<::

Answers

Answer:

This really isn't hard so for Allie the table is 2010/1 2011/2 2012/3 2013/4 2014/5

and for Jenna it is 2010/10 2011/11 2012/12 2013/13 2014/14 that is all for part A so for part B if Allie works for 6 years then Jenna will have worked 15

I hoped this helped you please give heart and 5 stars :-)

PLZZ HELP DUE BY TODAY AT 11am

Answers

Answer:

70

Step-by-step explanation:

An isosceles triangle has two equal sides, and the angles add up to 180 degrees. 180 - 70 - 40 = 100, therefore the answer is 70

The sum of the angles on ANY triangle will ALWAYS be 180°.

So,

40° + 70° +
110° +

According to a recent survey, 24 students
walk to school. These students represent 30%
of the students who took the survey. How
many students took the survey? (Use a model
to solve the problem.)

Answers

Answer:

80 students.

Step-by-step explanation:

30% = 24 students

10%     = 24/3 = 8

100% = 8*10 = 80 students.

Answer= 80 students took part
30%=24
10%= 8
100= 8x10 = 80

Which question(s) could be answered by collecting data that has variability? Click on each statistical question. To change an answer, click again. How many people are in Mr. Moore's geometry class? What proportion of the voters want a new city park? What was the temperature in the school lunchroom at noon today? How many people own snow blowers in Boston? On average, how old are the cats that live in Kyle's neighborhood?

Answers

Answer:

how old are the cats that live in Kyle's neighborhood?

Step-by-step explanation:

Because the question is  statistical which mean you will get more then one answers

Pls help me
Questios in Picture
Only need help with 1, 2, 3, and part b of 4

Answers

Answer:

(2,4) (-5,5) (3,4)

Step-by-step explanation:

( had taken the test

If C = 18π inches, what is the area?

Answer choices:
164.35 in^2
254.34 in^2
268.26 in^2
32 2.84 in^2

Answers

Answer:

254.34 in^2

Step-by-step explanation:

C = 18(3.14)

C = 56.52

A = C^2/4(3.14)

A = (56.52)^2 = 3194.5104

A = 3194.5104/4(3.14) = 254.34

Hope this makes sense

Answer:254.34

Step-by-step explanation:if you get it rong im sorry

What is the equation for this table?

Answers

Answer:

every time x increases by 1 and y increases by .5

Step-by-step explanation:

Answer:

1x=.5

Step-by-step explanation:

i dont know for sure but i hope this helps

A net has a rectangle at the center and 4 triangles on the sides. The rectangle has a length (c) of 6 meters and height (b) of 2 meters. The triangle labeled a has a height of 6 meters.
Label the net by defining each variable.

a =
m
b =
m
c =
m

Answers

Answer:

Area of the rectangular pyramid is 82.8m²

Step-by-step explanation:

Number of rectangle = 1

Number of triangles = 4

Dimension of Rectangle = Length = 6 metres; Height = 2 metres

Dimension of 2 triangles: Base = 6 metres and Height = 8.8 metres

Dimension of other 2 triangles: Base = 2 metres and Height = 9 metres

Help)Area of Composite Figures(Help

Answers

Answer:

F) = 79.27cm

G) = 50.8cm

Step-by-step explanation:

For F, add the area of the rectangle (8*5 = 40) to the area of the half circle ((pi * 5^2)/2 = 39.27) to get the total (79.27)

For G, add the area of the square (5.5*5.5 = 30.25) to the area of the trapezoid (3 * (8.2+5.5)/2 = 20.55) to get the total (50.8)

Hopefully this helps - let me know if you have any questions!

F = 79.27cm g= 50.8cm

First-person to answer with an explanation get Brianliest

Answers

Answer:

C

Step-by-step explanation:

Please don't hate if wrong.

pleaseeeeee helppp no bias answer please

Answers

Answer:

Step-by-step explanation:

Add all sides up

Add all the sides up.!

which expressions are equivalent choose all that apply A 7777 b. 7 to the 4th power C 4 to the 7th power. D. 7 to the 4th power E. 28

Answers

The answer is b have a great day

An alcohol solution was made by mixing 6 fl. oz. of a 20% alcohol solution and 4 fl. oz. of a 5% alcohol solution. What is the concentration of the mixture?
NO LINKS PLZ!!!!

A) 20%
B) 5%
C) 17%
D) 14%

Answers

The concentration of the mixture made by mixing 6 fl. oz. of a 20% alcohol solution and 4 fl. oz. of a 5% alcohol solutions is 14%

What is an equation?

An equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the concentration of the mixture, hence:

(6 * 20%) + (4 * 5%) = x * (4 + 6)

1.2 + 0.2 = 10x

x = 0.14 = 14%

The concentration of the mixture made by mixing 6 fl. oz. of a 20% alcohol solution and 4 fl. oz. of a 5% alcohol solutions is 14%

Find out more on equation at: https://brainly.com/question/2972832

PLEASE HELP THIS IS VERY IMPORTANT I WILL GIVE YOU BRAIN THING IF ITS CORRECT (you can use a calculator if you want)

Answers

Answer:

Step-by-step explanation: if there are 500 pieces of paper and the entire stack is 1.875 inches tall, you devide the total height by 500. I know Deigo is wrong because you can easily reverse check his work by multiplying 0.015 by the total number of papers 500 you will get 7.5 which is not the height of the stack

1.875/500=0.00375

each piece of paper is 0.00375

The base of a triangle is 3/4 the height of the triangle. The area is 30 square meters. What is the height of the triangle?

6
10
30
100

Answers

Answer:

10

Step-by-step explanation:

The answer is 10. I hope this helps you!!

HELP ME PLEASEEE :))))

Answers

Answer:7.5 Pounds of Apples With $5.00

Step-by-step explanation: You can see that each apply on the chart is 1.5 dollars. Just do 5*1.5. :)

7.5 pounds of 5$ apples

I NEED SERIOUS HELP PLS HELP
the width inside is 5 ft.
The length is 6 ft
The height is 8 ft

Answers

I believe it is 240 Bc it’s L•W•H so 6 • 5= 30 Nd 30 • 8 is 240:).....sorry in advance if I’m wrong
The answer is 240 ft squared

Pls help. I’m so confused

Answers

Answer:

25 units

Step-by-step explanation:

The longest side is 12.

The two other sides of the triangle = (3 sqaured + 6 squared) (9+36) the square root of 45 is about 6.7.

6.7 x 2 = 13.4

13.4 + 12 = 25.4

25.4 rounded to the nearest unit is 25

Answer:

25

Step-by-step explanation:

Used an online triangle calculator<3 lol

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