Mathematics Middle School

A sphere has a diameter of 8 inches what is the correct way to calculate the volume of the sphere?
A .V= 2/3(pi sign ) (4)3
B. V = 4/3(pi sign ) (8)3
C. V=2/3(pi sign ) (8)3
D. V= 4/3(pi sign ) (4)3

A Sphere Has A Diameter Of 8 Inches What Is The Correct Way To Calculate The Volume Of The Sphere? A

Answers

Answer 1
D. V = 4/3(pi sign) (4)^3

Related Questions

What is the mean of the following numbers?
15, 10, 7, 12
A
15
B
11
10
D 12

Answers

the mean is 11, meaning the answer choice is B right?

Answer:

11

Step-by-step explanation:

plz mark me brainliest

help !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

Gregor is planting pea plants in his backyard. Some of the plants are tall and the rest are short. Some of the plants are yellow and the rest are green. The numbers of different plant types are in the ratio\[\text{Tall green}:\text{Tall yellow}:\text{Short green}:\text{Short yellow} = 8:5:2:1.\]If there are 1080 green plants, then how many total plants are in Gregor's yard?

Answers

Answer:

1728.

Step-by-step explanation:

It is given that The numbers of different plant types are in the ratio  

Tall green:Tall yellow:Short green:Short yellow = 8:5:2:1.

Let the numbers of Tall green, Tall yellow, Short green:, Short yellow are 8x, 5x, 2x, x respectively.

Number of green plants [tex]=8x+2x=10x[/tex]

It is given that there are 1080 green plants.

[tex]10x=1080[/tex]

[tex]x=108[/tex]

Number of total plants [tex]=8x+5x+2x+x=16x[/tex]

[tex]16x=16(108)=1728[/tex]

Therefore, total plants are in Gregor's yard is 1728.

To make a model volcano that actually erupts, Tomo mixes chemicals using the recipe
shown.
He makes three batches of fake lava, each containing a different amount.

Drag numbers to show how much of each ingredient Tomo should use in each batch of
fake lava.

1/2 of the mix is baking soda

2/5 of the mix is vinegar

1/10 of the mix is dish soap

Answers

Answer:

What i added is the correct answer

Step-by-step explanation:

Complete A,B for 2,3 for 12 points

Answers

See Explanation

Step-by-step explanation:

1)

[tex] d = r. t\implies r = \frac{d}{t} \\

d = r. t\implies t = \frac{d}{r} \\[/tex]

2).

[tex] C = 2\pi.r\implies r = \frac{C}{2\pi} \\

C = 2\pi.r\implies \pi = \frac{C}{2r} \\[/tex]

Answer:

2.

A. r=d/t

B. t=d/s(r)

3.

A. r=c/2(pi)

B. (pi)=c/2r

Step-by-step explanation:

Pretty easy once you have mastered Algebra and Geometry.

Which equation represents a nonproptional relationship

Answers

I need to see a picture

Please help. I don't understand.

Answers

Hey there!

The answer would be 4 FEET. If the slide is 10 feet tall and you are 6 feet down the slide then your are only 4 feet high. Just simple subtraction! So x = 4.

Hope this helps!

Please help me I’m terrible at math.

Answers

Answer:

A) 200,000*0.75%=1500*100=150,000

B) 150,000 will be the birds population in 100 years

Help me, I need a step by step solution ASAP

Answers

Answer:

a)

[tex]x=-1\\x=-\frac{3}{4}[/tex]

b)

[tex]x=\frac{11}{6}[/tex]

Step-by-step explanation:

[tex]Formula: x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}[/tex]

[tex]a)-4x^2+7x-3=0[/tex]

a= -4

b= 7

c= -3

[tex]x=\frac{-(7)\frac{+}{}\sqrt{(7)^2-4(-4)(-3)} }{2(-4)}[/tex]

[tex]x=\frac{-7\frac{+}{}\sqrt{49-48} }{-8}[/tex]

[tex]x=\frac{-7\frac{+}{}\sqrt{1} }{-8}[/tex]

[tex]x=\frac{7\frac{+}{}1 }{-8}[/tex]

------------------------------

[tex]x=\frac{7+1 }{-8}=\frac{8}{-8}=-1[/tex]

or

[tex]x=\frac{7-1 }{-8}=\frac{6}{-8}=-\frac{3}{4}[/tex]

------------------------------

[tex]b)36x^2-132x+121=0[/tex]

a= 36

b= -132

c= 121

[tex]x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}[/tex]

[tex]x=\frac{-(-132)\frac{+}{}\sqrt{(-132)^2-4(36)(121)} }{2(36)}[/tex]

[tex]x=\frac{132\frac{+}{}\sqrt{17424-17424} }{72}[/tex]

[tex]x=\frac{132\frac{+}{}\sqrt{0} }{72}[/tex]

[tex]x=\frac{132\frac{+}{}0 }{72}[/tex]

------------------------------------------------

[tex]x=\frac{132}{72}[/tex]

[tex]x=\frac{132/6}{72/6}=\frac{22}{12}=\frac{11}{6}[/tex]

You put $550 in an account that
earns 2.5% annual interest
compounded quarterly. In how many
years will you have $1200?

Answers

The answer is 31 years
You will earn 1200 in 32 years

Is this statement true or false?

An automobile with an automatic transmission does not have a clutch pedal to change gears while driving.


true

false

Answers

There is no clutch pedal in an automatic transmission car.
Automatic transmissions change the gears in your car automatically and do not require a clutch pedal to select gears. A manual transmission however, requires the driver to depress a clutch pedal and select a gear with a gear shifter.

So the answer is true.

I hope this helps.

A car travels at a constant speed for 45 minutes. During this time the car goes
48 miles. If the car continues at this same constant speed, write an equation that
models the number of miles, ​m,​ it will travel in ​t​ hours?
How far will the car travel in 7 hours ?

Answers

Answer:

IDK

Step-by-step explanation:

                               

Answer: 308

Step-by-step explanation:

sorry if wrong............

Simplify, using the distributive property and then combining like terms. 2(x+y)+(2x−2y)

Answers

Answer:

4x

Step-by-step explanation:

[tex]2(x + y) + (2x - 2y) \\ = 2x + 2y + 2x - 2y \\ = 2x + 2x + 2y - 2y \\ = 4x + 0 \\ = 4x[/tex]

Part 2/2 6-10
Im so tired and staring at a bright screen gives me a headache =/

Answers

Answer:

Step-by-step explanation:

the first 1 is lamarck

the second one is 1,3,4

then last one is the 4th one

In triangle XYZ,
XY · cosY = XZ · cosZ.
Which of the following must be true about 4XYZ?
(a) It is a right triangle.
(b) It is an obtuse triangle.
(c) It is an acute triangle.
(d) It is an isosceles triangle.
(e) It is an equilateral triangle.

Answers

it is b, d, and e your welcome let me know if they are wrong but they were correct when i did it

Any help plzzzz i would appreciate it

Answers

Answer:

AC=13.5

Step-by-step explanation:

Determine if these matrices are inverses by

calculating AB

B

12

AB =

LC21 C22

C12 =

C11 =

021

C22 =

inverses of one

So the matrices

another

Answers

Answer:

Now calculate BA:

d11= 1

d12= 0

d21= 0

d22= 1

Based on these results, you can conjecture that multiplying a matrix by its inverse IS COMMUTATIVE

Step-by-step explanation:

Egde

math question screen shot ( multiple choice)

Answers

Answer: A, C, and E

Step-by-step explanation:

The answer would be C

(02.06)
A pair of parallel lines is cut by a transversal:
X
15
80
What is the measure of angle x? (4 points)

Answers

The measurements of an angle X is 80

In the figure, angle D measures 31° and angle A measures 27°.

Answers

Answer:

Well, if the figure is a triangle than the missing side would be 122 degrees, if it is a square, then it would be 302 degrees.

Step-by-step explanation:

Hope this helps!

A prediction for the volume at 105 seconds is 497 cm3.
Is this a reasonable prediction?
No, there is no recognizable pattern in the data
from which to make a prediction.
Yes, the first differences are all around -70, so a
linear function is a good model. Subtracting 70 from
567 results in 497 cm3.
No, the first differences are 15, so a linear function
is a good model. Subtracting 15 from 567 results in
552 cm3
Yes, the average rate of change is about 8.

Answers

Answer:

Step-by-step explanation:

Answer:

answer: B

Step-by-step explanation:

Find the area of the irregular figure. Round your answer to the nearest hundredth if necessary.

Answers

Answer:

Step-by-step explanation:

Area of the figure = Area of semicircle + area of rectangle

Area of semicircle:

d = 14 mm

r = 14/2 = 7 mm

Area = (1/2)πr²

[tex]=\frac{1}{2}*\frac{22}{7}*7*7\\[/tex]

=11 *7

= 77 mm²

Area of rectangle:

length = 14 mm

Width = 10 mm

Area = length *width

       = 14 * 10

       = 140 mm²

Area of the figure = 77 + 140 = 217 mm²

Polynomial question,
What is the perimeter and area of the rectangle?

Width: (2-3x)

Length: (2x+5)(x-1)

Answers

Answer:

Look at the attachment

An architect created a scale model of a building that was to be built.
Using a scale factor, how tall will the actual building be?
15 ft
60 ft
105 ft
135 ft

Answers

The scale factor is 15 because the width of the actual building is 15 times bigger than the model building.

So the length will be...

7*15 = 105 ft

answer: 105 ft

105 ft is your answer

Which interval for the graphed function has a local
minimum of 0?

[-3,-2]
[-2,0]
[1,2]
[2,4]

Answers

Answer:

Interval for the function has local minimum of 0 is [2,4].

Step-by-step explanation:

You need to find the local minimum of 0 in the given function's graph.

In mathematics, local minimum is a point on a graph whose value is less than all other points near it.

See that, graph value 0 is lie on the x = 3 and in interval x = 2 to x = 4

So, final answer is :

Interval for the function has local minimum of 0 is [2,4].That's the final answer.

hope it helps

Answer: D

Step-by-step explanation:

2,4

The equation below describes a parabola. If ais negative, which way does the
parabola open?

Answers

I cannot see the question show me

Answer:

Downwards

Step-by-step explanation:

Suppose you have the quadratic equation, [tex]ax^2 +bx+c[/tex], if a is positive, the parabola opens upwards. If a is negative, the parabola opens downwards.


Find the least common denominator (LCD) of
3
7
and
5
8

Answers

Answer:

56

Step-by-step explanation:

7 is a prime number

7*8 = 56

The least common denominator is 56

3/7 * 8/8 = 24/56

5/8*7/7 = 35/56

Answer:840  

Step-by-step explanation:

Marco is going to a local fair. He spends $5 on admission to the fair. He wants to go on rides that cost $0.75 per ride. Write an inequality and solve it to find the maximum number of times Marco can go on the ride if he wants to spend at most $35

Answers

Answer:

(35-5) / 0.75 = amount of times he can ride.

30/0.75 = 40

Does this help?

Step-by-step explanation:

please help as soon as possible ​

Answers

Answer:

22

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

To find the mean you have to do the sum of all of the numbers divided by the number of days there are (in this case there are 5: Monday, Tuesday, Wednesday, Thursday, and Friday)

So,

23 + 18 + 24 + 15 + 25 = 105

Then,

105/5 = 21

A straight line is drawn through the intersection of the two diagonals of a parallelogram. Prove that it exactly divides the parallelogram into two equal parts by area.

Answers

Answer:

Area of rectangle APQB = Area of rectangle DPQC

Where:

PQ is the line passing through the intersection of the diagonals of the parallelogram ABCD

Step-by-step explanation:

Here we note that a parallelogram is a quadrilateral with the two opposite sides equal, therefore, the diagonals each divides the parallelogram

Given the parallelogram ABCD with a point of intersection of the two diagonals = O

We are to prove that a line PQ passing through O divides the parallelogram into two equal parts;

The diagonals of a parallelogram bisect each other hence

OA = OC and OB = OD

Also ∠AOB = ∠COD (vertically opposite angles at the crossing of the diagonals)

∴ ΔAOB ≅ ΔCOD (SAS congruence rule)

Area of ΔAOB = Area of ΔCOD

In ΔAOP and ΔCOQ, we have;

∠PAO = ∠QCO (alternate interior angles of a parallel line)

OA = OC (as above)

∠AOP = ∠QOC (vertically opposite angles at the crossing of the diagonals)

∴ ΔAOP ≅ ΔQOC

Area of ΔAOP = Area of ΔQOC

From which we have by similarity;

ΔBOQ ≅ ΔPOD

Area of ΔBOQ = Area of  ΔPOD

Hence area of rectangle APQB = Area of ΔQOC + Area of ΔCOD + Area of  ΔPOD = Area of ΔAOP + Area of ΔAOB + Area of ΔBOQ

∴ Area of rectangle APQB = Area of rectangle DPQC there proved as required.

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