Mathematics Middle School

Which is closest to the surface area of a cone with dimensions as shown?

A. 113 mm2

B. 75 mm2

C. 66 mm2

D. 207 mm2

Which Is Closest To The Surface Area Of A Cone With Dimensions As Shown?A. 113 Mm2B. 75 Mm2C. 66 Mm2D.

Answers

Answer 1

Answer:

B

Step-by-step explanation:

A=πr(r+h2+r2)=π·3·(3+42+32)≈75.39822

Answer 2

Answer:

75.39 mm²≈ 75 mm²

Step-by-step explanation:

A=πrl+πr²

l=[tex]\sqrt{r^2+h^2}[/tex]

A=πr(r+[tex]\sqrt{r^2+h^2}[/tex])=π·3·(3+[tex]\sqrt{4^2+3^2}[/tex])≈75.39 mm²

75.39 mm² ≈ 75 m²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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PLEASE HELP ASAP PLEASE AND THANK YOU

Answers

Answer:

9; 4.6

10; 2.7

Which two expressions have the same value?

Answers

Answer:

One and two

Step-by-step explanation:

The answer is one and two since you would first multipy anyway using pemdas

Answer:

One and 2 since the only difference is parentheses

Match the descriptions with the shapes:

My faces are rectangles.
My two bases are triangles
All six of my faces are rectangles.

I have a rectangle for a base.
The rest of my faces are triangles.

I have a triangle for a base.
All of my faces are triangles.

I have a square for a base.
The rest of my faces are triangles.

All six of my faces are congruent squares.
I am also called a cube.

Answers

A: Hexagon
B: Diamond
C:Triangle
D:Star
E:Square?

I rlly hope this helps, I don’t know it all but I rlly hope it helps at all :)

Help please, need help

Answers

Answer:

Step-by-step explanation:

B) Small triangle:

height = 20 - 15 = 5

base = 1

height to base =  5 :1

Medium triangle :

height = 60 -30 = 30

base = 2

height to base =  30 :2  = 15 :1

Large triangle:

height = 120 - 60 = 60

base = 4

height to base =  60 : 4 = 15 : 1

c) The ratios are same. This is true because wage and working hours are in direct proportion.

E) Take any two points. (1 , 15) & (2 , 30). Find the slope.

Slope = Change in y ÷ change in x

 m = (30-15) ÷ (2 -1) = 15/1 = 15

y -y1 = m(x -x1)

y - 15 = 15(x - 1)

y - 15 = 15x - 15

y = 15x - 15 + 15

y = 15x

The answer is: Y= 15x

What is the value of 25 – 5 × 8 – 4?

Answers

Answer:

25- 40 - 4 = -19

-19 is the answer.

5x8=40, and then 25-40= -15, and then -15 - 4 = -19. Hoped this helped!

Rania is playing with her friend Arun, and they are setting up dominoes across the room. Each domino is 2 inches long. They have already placed 10 dominoes in a row. The room is 10 feet long and they want to know how many more dominoes they can set up before they reach all the way across the room. Does the inequality 2d + 20 < 120 model this situation? Explain why or why not.

Answers

Answer:

no

Step-by-step explanation:

It should be less then or equal too, seeing as they want to reach all the way across the room.

The speed limit on a highway is 75 miles per hour. Which of the following inequalities represents this situation? x ≤ 75 x ≥ 75 x < 75 x > 75

Answers

Answer:

x ≤ 75

Step-by-step explanation:

Answer:

x ≤ 75

Step-by-step explanation:

Joe and his brother weigh a total 66 pounds in the ratio of 2:1 respectively. How much heavier is Time than his brother?

Answers

Time is 22 pounds heavier than his brother
Time is 22 pounds heavier because 66 would be split into three, which explains 2:1 - 2+1… so 22 is 1/3 of 66 and 44 is 2/3 of 66

lol can someone help and please do the step by step explanation and the answer correctly (best answer will get brainliest)

Answers

Answer:

A

Step-by-step explanation:

Sorry if i'm wrong but i think B is wrong because for the field hockey team the max is mmore seperated than the basketball team. again, sorry if i'm wrong

HELP ME PLS IM GIVING BRAINLY IF CORRECT

Answers

Answer:

There’s no picture what’s the question?

Step-by-step explanation:

where is the question?

Please help me. Will give brainliest!!

Answers

100 x 400 then do pi times the diameter
This is actually pretty fun to do!

So the formula for area of a circle is A=πr^2
We know that the diameter (or distance across) one blue half-circle is 40 yards
And radius is half of the diameter so 40/2 = 20 so radius=20
Now just plug it into the equation! A = π (20)^2 —> A = π (400) —> A = 1256
BUT that is the equation to find area of a complete circle. Since this is a HALF circle, divide that area in half: 1256/2 = 628
So the area of one of the blue half-circles is 628

Please help me with this. I haven't done a problem like this in forever and totally forgot how. Have an amazing day!!

Answers

Answer:

-100

Step-by-step explanation:

(6+4) × (-3-7)

(10) × (-10)

= -100

Answer:

-100

Step-by-step explanation:

do inside the parentheses first.

10 x -10 = -100

Questions in the attachment! Please answer both no bitly links please

Answers

Answer:

a) y = x + 3

b) y = x + 4

Step-by-step explanation:

a)

the line is going through 3 on the y-intercept line

b)

0,4 is graphed and if there is a 0 under the x, the y is automatically the y-intercept

PLZ HELP AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Answers

Answer:

216

Step-by-step explanation:

The number of smaller unit cubes that could fit inside the bigger one could be calculated by dividing the Volume of the larger cube by the volume of the smaller cubes.

Volume of bigger cube:

[tex](1\frac{1}{2}) ^3 = \frac{27}{8}[/tex]

Volume of smaller cube:

[tex](\frac{1}{4} )^3=\frac{1}{64}[/tex]

[tex]\frac{27}{8} /\frac{1}{64} =\frac{27}{8}*64=216[/tex]

Answer:

Step-by-step explanation:

Take 1 1/2 * 1 1/2 * 1 1/2 = 27/8 (3.375) in which would be the volume  and then all you have to do is put 1/4 into 27/8 how many overtimes (3 3/8)

(I would wait until you have more answers because I'm not that great at math but I'm here to practice)

Which of the following could be used to describe angles DBC and ABD?

Answers

the answer is C :)))

Evaluate the expression

10 - 4 / 2

Answers

Answer:

The answer to the expression is 8

Answer:

The answer is 8

Step-by-step explanation:

10−4/2

=10/1−4/2

=10/1+−4/2

=10/1+−2/1

=10+−2/1

=8

I turned them both into fractions

A baseball has a diameter of 4.3 inches. Find the volume of the baseball. Round your answer to the nearest tenth. Use 3.14 for π.

Answers

Answer:

13.5

Step-by-step explanation:

4.3 • 3.15(pi)

Rounded to nearest tenth: 13.5

Hope this helps, good luck! :)

order these values from least to greatest.

Answers

Answer:

1 . 16

2 . 4

3 . 64

4 . -4

The fourth one goes first and then the second one and then the first one and then the third one.

1.16 2.4 3.64 4.-4 the order is -4, 4, 16, 64

Which decimal is equal to 4/5?

Answers

0.8 is equal to 4/5
Jsjdjdjdjdjdjkdjdjdjdjdjdjjdkd

PLS PLS HELP FIND THE VOLUME!!! PLS PLS I GIVE U ALL MY POINTS

Answers

Answer:

1232

Step-by-step explanation:

Step 1: 8x14 to find the base

Step 2: Base times Height

Good Luck! And have a great day!

Answer:

[tex]410\frac{2}{3}[/tex] cm³

Step-by-step explanation:

8 × 4 × 11 = 1232 cm³

1232 cm³ ÷ 3

[tex]410\frac{2}{3}[/tex] cm³

Can someone write a story problem idea for me?
The equation: 1/2 ÷ 2

Answers

You have 1/2 of a pizza left and you want to share it equally between 2 people, how much pizza does each person get?

(8 slices per pizza)

A) An airplane prepares for landing at an
altitude of 54,000 feet. Assuming it descends
at a rate of 3,000 feet for minute. Write an
equation in slope-intercept form that models
that situation.

Answers

The answer is y=5400x-3000

Guess the song:

I know that you're calling me
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'Cause I don't get down like that
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Answer:

Are you lonely :)

Answer:

Are You Lonely

by Alan Walker and Steve Aoki

Step-by-step explanation: pls mark me branliest if its right lol :)

I need help with this question

Answers

Answer:

15.28

Step-by-step explanation:

first we divide 96 by 3.14 to get the diameter

96÷3.14=30.57

now we have the diameter we divide by two to get the radius

30.57÷2=15.28

15.28 is your radius

I know I've asked a bunch of questions but I reallyyyy need help on math

Answers

Answer:

i think its d

i believe it’s the last one

I need help on part b please. part a is james i already know that.

Answers

Part B: Answer 127.5$

Answer:

$150

Step-by-step explanation:

Well, lets see. I'm no expert but I'm in Advanced Math 7th Grade so I could possibly help.

We have to figure out how much each person is getting per hour for part a.

We can use this formula:

James: 102/12= 10

Julie: 120/15= 8

I really have no clue so my guess would be this.

Using a table: We can figure out how much James would get for a 15 hours based on getting 102 for 12.

We know he gets $10 for 1 hourSo all you have to do it multiply 10 by 15.That is 150.

Therefore according to my 7th grade brain the answer is $150 for doing 15 hours of yard work for James.

I hope this helped!

Each outer wall of the Pentagon in Washington D.C , measures 921 feet .What is the measure of each angle made by the Pentagon’s outer walls?

Answers

Answer: its 4605

Step-by-step explanation:

On a scale drawing, the height of a tree is 3.75 inches.
If the scale of the drawing is 1 in. : 50 ft, how tall is the tree?
Geometry

Answers

Answer:

d

Step-by-step explanation:

what is 3(x-6)+4x+18

Answers

7x is the simplified version

Answer:

i am going to assume that 3(x-6)+4x+18=0

3x-18+4x+18=0

                 7x=0

                   x=0

please help i have no idea what this stuff means

Answers

Answer:

J is not true

Step-by-step explanation:

I know this because it says the measure of angle 7 is 40 degrees but if you look at the image you know that angle 7 is more than 90 degrees.

It’s J hope this helps
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