A cone has height h and a base with radius r. You want to change the cone so its

volume is halved. What is the new height if you only change the height? What is the

new radius if you only change the radius? Explain.

Answers

Answer 1

9514 1404 393

Answer:

  a) h/2

  b) r/√2 = (r√2)/2

Step-by-step explanation:

a) The volume of a cone is proportional to height. If the volume is halved, then the height will be halved.

The new height will be h/2.

__

b) The volume is proportional to the square of the radius. If the volume is halved, the square of the radius is halved. The new radius will be ...

  (r')² = r²/2

  r' = r/√2 = (r√2)/2 . . . radius of half-volume cone


Related Questions

Find 3 consecutive integers such that the sum of all 3 integers is equal to 4 times the smallest integer minus 9. Please help I need it asap I will appreciate it a lotttt

Answers

Answer:

The three integers are 12,13 and 14

Step-by-step explanation:

Let

x,x+1,x+2 be three consecutive integers.

Out of these, the smallest one is x and largest is x+2 as it comes at last in the integers.

So according to given statement

[tex]x+(x+1)+(x+2) = 4x-9[/tex]

This is a linear equation in one variable, which can simply be solved by using equality properties

[tex]x+x+1+x+2 = 4x-9\\3x+3 = 4x-9[/tex]

Subtracting 4x from both sides

[tex]3x+3-4x = 4x-9-4x\\-x+3=-9[/tex]

Subtracting 3 from both sides

[tex]-x+3-3 = -9-3\\-x = -12\\x = 12[/tex]

The smallest integer is 12.

The other integers are:

x+1 = 12+1 = 13

x+2 = 12+2 = 14

Hence,

The three integers are 12,13 and 14

Please help i need it done asap
Thank you have a great day

Answers

I did this and I got the last answer
Hope this helps I know for sure it’s right so let me know if you got it right

what situation can be modeled using the same equation -4 + 4 equals 0​

Answers

The answer is B because it is at -4 then increases 4 so now it is 0 degrees .

find the product of 7.64​

Answers

Answer:

58.3696

Step-by-step explanation

7.64 *7.64=58.3696

answers are

A. 41 degrees
B. 15 degrees
C.90 degrees
D. 83 degrees ​

Answers

Answer:

Step-by-step explanation:

Ok so what you are going to do is  set up and equation where 6x-7=4x-23

you will get x= -8 now plug it in

what is the solution to the following equation

Answers

Answer:

x²+5x+7 = 0

comparing above equation with ax² + bx +c

a=1, b = 5, c= 7

then

using quardatic formula

x = -b ±[tex]\sqrt{b^{2} - 4ac[/tex]

        2a

on solving option d is correct answer

Step-by-step explanation:

DETERMINE WHETHER THE EXPRESSIONS BELOW ARE CORRECT OR NOT AND DO THE CORRECTION

1. 12% + 13%= 25%

2. a%=5 = a=5%

BTW ill make the first one to answer the brainliest

Answers

Answer:

First ans is true but second one is not the cotrect

one

Answer:

the 12%+13%=25%is correct while the a%=55a=5% is not correct

Find 2 consecutive odd integers such that the sum of twice the larger integer and the smallest integer is 85.

Answers

Answer: Find an answer to your question Find 2 consecutive odd integers such that the sum of twice the larger integer and the smallest integer is 85.

Step-by-step explanation:

Which triangles are congruent by ASA? *

Answers

The answer is B



Hajdbandnsnndndmsnamdnmd

Answer:

The correct answer is B. ΔVTU and ΔABC

Step-by-step explanation:

I took the test hope this helps :)

what is the correct evaluation of 15-3x, when x is equal to -2?

-15

21

15

-21​

Answers

Answer:

Step-by-step explanation:

15-3x

15-3(-2)

15+6

21

Answer:

21 is the correct answer

84 y is directly proportional to x. Given that y = 144 and x = 12. Find the value of y when x = 7.

Answers

84y = k x X
84 x 144 = 12,096
12,096 = k x 12 Divide by 12 each side
1,008 = k
84 y = 1,008 x 7
84y = 7056 divide by 84 each side

Y = 84

At 3:30 p.m., Berto’s train was 34 miles past the egg farm, traveling at an average speed of 85 miles per hour. At the same time on a nearby track, Eduardo’s train was traveling at an average speed of 110 miles per hour and had 12 miles to go before it reached the egg farm. To the nearest hundredth of an hour, after how much time will the trains meet up?

Answers

E=egg farm

x=distantce between  the Berto´s trains and the meeting point.

t=time where the trains meet up

⇒110 miles/h                                          ⇒85miles/h

[---------------------------E----------------------]-------------------------------------X

[............12 miles.......][........34 miles.....][------------ x ----------------------]

distance between Berto´s train and Eduardo´s train=

=12 miles+34 miles=46 miles.

S=d/t      ⇒d=S*t

S=seed

d=distance

T=time

Eduardo´s train;

46 miles+x=t*110 miles/h  ⇒x=t*110 miles/h-46 miles  (1)

Berto´s train;

x=t*85 miles/h  (2)

With the equations (1) and (2) we suggest this system equations:

x=t* 110 miles/h-46 miles

x=t*85 miles/h

we solve this system equiations :

t*110 miles/h-46 miles=t*85 miles/h

110t miles/h-85t miles/h=46 miles

25 t miles/h=46 miles

t=46 miles/25 miles/h=1,84 hour  (≈1 hour, 50 minutes, 24 seconds)

x=t*85 miles/h=156,4 miles

Solution: 1,84 hour

Answer:

1.84

Step-by-step explanation:

I did it on edge it was correct

find the slope and the y-intercept of 7x = 2y-4

Answers

Answer:

Slope: [tex]\frac{7}{2}[/tex]

Y-intercept: (0, 2)

Step-by-step explanation:

7x = 2y - 4

-2y = -7x - 4

y = [tex]\frac{-7}{-2}[/tex] x - [tex]\frac{4}{-2}[/tex]

y = [tex]\frac{7}{2}[/tex] x + 2

The slope is always the coefficient of x and the y-intercept is always the constant. It looks like (0, constant) when written in y-int form.

Answer:

slope (m) is 7/2 (aka 3.5) and y-int is (0,2)

Step-by-step explanation:

I don't really have an explanation, basically rearrange the problem so that to y is on the left but it would be 2y so divide the right side by two. I an explain further in depth if needed

Please help and I’ll mark brainliest if u give a small explanation

Answers

Answer:its 60

Step-by-step explanation:

look at g and put the number thats there on g

bye guys take some points its my last day

if tammy has two banna how many bannas does she have
A.1
B.2
C.3
D.4

Answers

Answer:

B. 2

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Which of the following expressions is a factor of the polynomial x2+3/2x-1?
x-1
x-1/2
X-2
x+3/2

Answers

Answer:

the answer is x-1/2

Here see the attachment

Under certain​ conditions, the average cost of driving a medium sedan in 2012 was ​$0.64 per mile. How much would it have cost to drive such a car 13000 miles in​ 2012?

Answers

Answer:

$8320

Step-by-step explanation:

.64 x 13000

A board measures 15 meters in length and is cut into two pieces. One-piece measures 7 meters. Write an equation to find the length of the other piece?
Pls help

Answers

Answer:  7.2 + L= 19.5

A new, healthy drink has 160% of the “recommended daily allowance” (RDA) of vitamin J. If the RDA is 40 milligrams, how much vitamin J is in the new health drink?

Answers

Answer:

80

Step-by-step explanation:

Im not really sure just the thingy says that 80 was the right anwser

Answer:

64

Step-by-step explanation:

Sorry I'm really late.

Points (-2, 3) and (x, 0) have a slope of 1/5.Find the x coordinate of the point.

Answers

Answer:

x = -17

Step-by-step explanation:

y - y1 = m(x - x1)

y - 3 = 1/5(x - (-2))

y - 3 = 1/5(x + 2)

y - 3 = 1/5x + 0.4

y = 1/5x + 0.4 + 3

y = 1/5x + 3.4

Now we plug in y as 0 to find x

y = 1/5x + 3.4

(0) = 1/5x + 3.4

-3.4 = 1/5x + 3.4 - 3.4

-3.4 = 1/5x times 5

-3.4 times 5 = x

-17 = x

Answer:

x = -17 (Verified Answer) ✅

Step-by-step explanation:

If we know the slope, we can solve for an unknown coordinate. First, let's review how to calculate slope.

Slope = Rise/Run (Change in y/Change in x)

In this case, we know the slope, so we will write out the slope formula. We will use the substitution method to solve this.

m = rise/run

rise = y2- y1 substituting ----> 3 - 0 = 3

run = x2 - x1 substituting ----> -2 - x = run

Now, we can return to the slope formula, as we now have enough information to solve.

1/5 = 3/R

To solve, we simply need to find the equivalent fraction of 1/5. We will use a proportion.

1R = 5 x 3

R = 15

Now that we know R, we can substitute it into the equation for run.

So, we now have:

15 = -2 - x

Subtracting -2 from both sides, gives us x = -17.

Finally, we must check our answer to make sure we are getting the correct slope when we calculate.

m = (3 - 0)/(-2 - -17)

m = 3/15 OR 1/5

Since. this matches the original slope we were given, we can be sure the answer is correct.

Can someone help me please

Answers

P: -3x, 1y
Z:-3x, -4y
I: -1x, -4y

Heidi has $4.55. She needs to buy bolts at the hardware store. Bolts cost $0.13 each.

What division equation and related multiplication equation could Heidi use to find how many bolts she can buy?

Answers

Answer

35

Step-by-step explanation:

4.55/.13=35. Also, Heidi could do 35x13. I hope this helps!

A student has a range of values from 0.000001 to 1,000,000, but limited paper to graph these values on. How might the student be able to graph these results clearly?

Answers

Answer:

logarithmic scale

The student might be able to graph these results clearly by taking the log of the values.

What is logarithm of a number?"Logarithms are the inverse of exponents. ""x is the logarithm of n to the base b if [tex]b^x=n[/tex]"

For given question,

A student has a range of values from 0.000001 to 1,000,000

We need to find the way so that the student will be able to graph these results.

We can write  0.000001 as [tex]1\times 10^{-6}[/tex]

[tex]\Rightarrow 0.000001=10^{-6}[/tex]

and 1,000,000 as [tex]1\times 10^6[/tex]

[tex]\Rightarrow 1,000,000=10^6[/tex]

If we take the log of these range values, then it would be,

[tex]\Rightarrow log(10^{-6})=-6[/tex]

and [tex]log(10^6)=6[/tex]

This means, the student might be able to graph these results clearly by taking the log of the values.

Learn more about logarithm here:

https://brainly.com/question/20785664

#SPJ3

Anthony is laying concrete for a driveway. The driveway is to be 24 feet long by 11 feet wide by 8 inches deep. Answer parts (a) through (c)

(a) Determine the volume of concrete needed in cubic feet.

(b) If 1 cubic yard = 27 cubic feet, how many cubic yards of concrete are needed?

(c) If the concrete costs $36 per cubic yard, what is the cost of the concrete? Concrete must be purchased in whole cubic yards​

Answers

Answer:

a) The volume of concrete needed in cubic feet is 2,112. b) The number of cubic yards of concrete needed in cubic yards is about 79. c) The cost of the concrete using cubic yards is $2,844.

Step-by-step explanation:

a) The formula of the volume is l*w*d. 24 * 11 * 8 = 264 * 8 = 2,112.

b) The way to find this is that you take 2,112 and divide it by 27. Since the answer is 78.2 repeating, you round it up to 79 so it will fill up all of the concrete.

c) Since you need 79 cubic yards of concrete, you do 79 multiplied by $36 to get the total cost of $2,844.


!! please help timed

If the value of "y" varies directly with "x"
and y = -8 when x = 20, find "y" if x = -4.
Enter the number that belongs in the green box.
Reduce to simplest form.

Answers

Answer:

Step-by-step explanation:

Y= -2/5 x -4/1 so the answer is Y=8/5

In the number 3.072 the digit 7 is in the ? place and the digit 2 is in the ? place.​

Answers

Answer:

7= Hundredths

2=Thousandths

The required place of 7 and 2 in the given decimal value is the hundredth and thousandth.

Given that,
In the number 3.072 the digit 7 is in the place and the digit 2 is in the is to be determined.

What is decimal value?

Decimal value is defined as showing the place value of the digits in a decimal number. If any proportion of the digit is lower than 1 it would be represented after the dot right to the absolute value,

Here,

Given decimal value = 3.072
Where after the decimal point 0 is at tenth position, 7 is at hundredth position and 2 is at thousandth positions.

Thus, The required place of 7 and 2 in the given decimal value is the hundredth and thousandth.

Learn more about decimal values here,

brainly.com/question/19802955

#SPJ2

Dont know what to do.

Answers

9514 1404 393

Answer:

  512 million

Step-by-step explanation:

Expected value is the sum of the products of probability and the value associated with that probability. Here, it is the sum ...

  0.4(390) +0.4(890) +0.2(0) = 512 . . . million

The expected value of the loss over a 5-year period is $512 million.

Solve plz, this is due Tomorrow!!

Answers

.

Step-by-step explanation:

25) h=11

26). two sides are same = 12cm

27). time = 15 hours

28). veronica travelled = 6+1 = 7 days

29). number of tickets buyed by people each showing : 231

30) ©

could you plz answer these questions plzzzzzzzz​​

Answers

can you post a better picture I don’t have good eyesight but I really want to help you!

Answer:

11. 74

12. 8.5

13. 194

14. 56

15. the second one so 30.5 is more expensive

16. Manju walked further

Step-by-step explanation:

11. perimeter so add all the sides together

oh they are all perimeter so add the two numbers in each problem and then multiply that number by 2

60 vs 122 so the 30.5 is more expensive

280 vs 288 so manju walked more

brainliest would be greatly appriciated! Thanks!

On a street , there are 25 houses, of which 12 have a cat and 4 have both a cat and a dog. If a house has a cat, what is the probability that there is also a dog living there?

Answers

Answer:

50 percent

Step-by-step explanation:

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