Answer: The volume is doubled.
Step-by-step explanation:
I will answer in English.
This says that:
"The radius of a cylinder is equal to its height, what would happen to the volume of this cylinder if the radius is doubled, and the height is halved?"
The volume of a cylinder of radius R y height H is:
V = pi*R^2*H
In this case, the radius is equal to the height, then the initial volume is:
V = pi*(R^2)*R = pi*R^3
Now, for the new cylinder we will have:
Radius = 2*R
Height = R/2
Then the new volume is:
V' = pi*(2*R)^2*(R/2)
V' = pi*4*R^2*(R/2)
V' = (4/2)*pi*R^2*R
V' = 2*pi*R^3
And pi*R^3 was the volume of the original cylinder, then:
V' = 2*V
This means that when the radius is doubled and the height is halved, the volume of the cylinder is doubled.
Solve for x by factoring sqrt{x+7}=x+5
Answer:x=-3
Step-by-step explanation:
Factor and set each factor equal to zero.
PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!
Use the original price and the markup to find the retail price.
Original price: $64; Markup: 20%
The retail price is $ ___________
Answer:
$72 would be the retail price
Step-by-step explanation:
anybody know this one? kinda confused lol
Answer:
x^5/x^2 = 2^5/2^2
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent. Subtract 2 from 5 to get 3.
23
Calculate 2 to the power of 3 and get 8.
8
hopefully i helped :)
Explanation:
I think that what you need to do is make the x 2? which makes it 2^5/2^2
2x2x2x2x2=32
2x2=4
so I think the answer is 32/4 which is 8
Answer:8
can someone help me w this ?
Answer:
first choice
Step-by-step explanation:
a^2 + b^2 = c^2
a^2 + 10^2 = 15^2
a^2 + 100 = 225
- 100 -100
a^2 = 125
square 125
a = 11.18
The height, x, of a model built with toy blocks is proportional to the number of blocks, y, that is used. The table below shows this relationship. Which of the following is the missing value for the table?
How many solutions are in the graph
A. One solution
B. Two solutions
C. No solutions
D. Infinitely many solutions
Answer:
Infinite Many Solutions
Step-by-step explanation:
If I am correct the two lines are overlapping each other in more than one place so that means there are infinitely many solutions. Also, there can be no " two solutions" for this type of equation. There can only be one solution, no solution, or infinitely many solutions.
How do i solve this?
Answer:
x=5
Step-by-step explanation:
the angle LMN is a 90 degree angle, so we need 11x+35 to equal 90.
11(5)+35=90
Calculate the area...............
Answer:
9+5=14
14/2=7
7×7=49
the answer is 49
Helpppp!!
Select all the functions whose graphs include the point (16,4).
y = 2x
y = x?
y = x + 12
y = x - 12
Answer:
it is the first one I am sure of it
Hellllllllllllllllllllllllllllllllllllllllllllllllllllllllppppppppppppppp
Answer:
144 calories
Step-by-step explanation:
12%(1200)=
0.12(1200)=144
Valerie and her parents are going to her grandparents' house in Tennessee. It is a 3-hour drive. If they leave at 9:00 am and don't make any stops, what time will they be at Valerie's grandparents' house?
Answer: 12:00 pm
Step-by-step explanation:
Valerie and her parents are goig to see her grandparents.
The grandparents leave 3 hours away.
They leave at 9:00 am.
The rime they'll arrive is therefore:
= 9 + 3 hours
= 12:00 pm
PLEASE ANSWER ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
and answer like
answer 1. ___________________
answer 2.___________________
answer 3.___________________
answer 4.___________________
answer 5.___________________
Answer:
answer 1: proportinal
answer 2:proportinal
answer 3:not proportinal
answer 4:proportinal
answer 5:not proportinal
Step-by-step explanation:
btw im in k12 too i hope this helps
Answer:
1) proportional
2) proportional
3) not proportional
4) proportional
5) not proportional
Step-by-step explanation:
Write the equation of the line, in point-slope form. Identify (x1, y1) as the point (-2, 2). Use the box provided to submit all of your calculations and final answers.
Answer:
Slope: -1
Point-Slope Form: y - 2 = -1 (x - (-2))
Step-by-step explanation:
Answer: y-2=-1(x+2)
Step-by-step explanation: use whichever points you want I’m using (-2,2)
Find slope: y2-y1/x2-x1 so 2+2/-2-2 = 4/-4 = -1
Plug in these into y-y1= m(x-x1)
y-2= -1(x+2)
Debby had 928 quarters. If it costs 8 quarters for each coke from a coke machine, how many could she buy
Answer: 116
Step-by-step explanation: simply divide 8 into 928
Answer:
116 coke
Step-by-step explanation:
992/8
=116
Debby would be able to buy 116 cokes from the coke machine.
Find the volume of a cylinder with a height of 6cm and a radius of 3cm
Answer:
a) 54π cm³
Step-by-step explanation:
area of circle=πr²
9π
π9*6=54π
Answer:
b
Step-by-step explanation:
F(x)= x^6 + 63x^3 -64
HELP HELP HELP I REALLY NEED HELP PLEASE PLEASE PLEASE!!!!!
Answer:
i think 7 maybe?
Jada made 6 cups of blueberry jam and divided the Jam in 4 containers. How much jam went in each container
Keisha is reading a 310 page book at a rate of 23 pages per day.Use a point-slope equation to determine how many pages she will have left to read after reading the book for 10 days. She will still have [ ] pages left to read after 10 days.
Answer:
80 pages
Step-by-step explanation:
Point slope Equation is :
y = mx + c
In the above question
y = 310 pages
x = number of days = 10 days
m= 23 pages per day
c = ?? Unknown
c = y - mx
c = 310 - 23 × 10
c = 310 - 230
c = 80 pages
She will still have 80 pages left to read after 10 days
I need help with this please help????
Answer:
D.29
Step-by-step explanation:
all you have to do is replace the x's with -2
4(-2)^2-3(-2)+7=4*4+6+7=16+6+7=22+7=29
A traveler is walking on a moving walkway in an airport. The traveler must walk back on the walkway to get a bag he forgot. The traveler's ground speed is 1 fts against the walkway and 5 ft/s with the walkway. What is the traveler's speed off the walkway? What is the speed of the moving walkway? The traveler's speed off the walkway is ft/s.
Answer: here is your answer
Step-by-step explanation:
You can put this solution on YOUR website!
+t+ = traveler's speed in ft/sec
+w+ = walkway's speed in ft/sec
given:
+t+-+w+=+2+
+t+%2B+w+=+6+
-------------
Add the equations
+2t+=+8+
+t+=+4+
and
+t+%2B+w+=+6+
+4+%2B+w+=+6+
+w+=+2+
The traveler's speed off the walkway is 4 ft/sec
The speed of the moving walkway is 2 ft/sec
please help and show work
Answer:
1. a=20
2. a=17
3. x=12 y=4
Step-by-step explanation:
set them equal to each other for each figure, the first one is 6a+10=130 therefore 6a=120 if you subtract 10 from each side. then you divide by 6 to get a=20.
For the next one set them equal again to get 4a-4=2a+30 first you add 4 to each side to get 4a=2a+34 then you subtract 2a from each side to get 2a= 34 then you divide by 2 to get a=17
Last one you have to set 6y+1 equal to 4y+9 because they are equal distance. you get 6y+1=4y+9 then you subtract 4y to get 2y+1=9 then you subtract 1 to get 2y=8 then you divide by two and get y=4
For the second variable of the last equation you set the remaining two equations equal to each other to get 2x-5=x+7 then you subtract x from both sides to get x-5=7 then you add five to each side to get x=12 so your final answer for the last question is x=12 y=4
Hope this helped ;)
x^2+6x-19=0 pls helpppp
Answer:
Step-by-step explanation:
Since this is not factorable, let's just complete the square:
[tex]x^2+6x=19\\x^2+6x+9=28\\(x+3)^2=28\\x+3=\sqrt{28}\\x=2\sqrt{7}-3[/tex]
SOME ONE HELP ITS DUE IN 3 HRS ITS ONLY ONE QUESTION PLS
The measures of two of the angles are 50° and 30° what is the last angle?
Answer: The answer would be 100 degrees.
Step-by-step explanation:
180 - (50+30) = 100
Hope this helps :)
Anyone please help like I said I will Venmo you 5 dollars not joking but please help
Answer:
0 = 0 miles
1 = 1.5 miles
2 = 3 miles
3 = 4.5 miles
4 = 6 miles
5 = 7.5 miles
Step-by-step explanation:
multiply each hour by 1.5
If a garden snail travels 1.5 miles per hour, then when 0 hours pass, it would have travelled 0 miles (no time has passed).
After 1 hour, it would have travelled 1.5 miles.
After 2 hours, it would have travelled 3 miles (1.5 miles × 2 hours).
After 3 hours, it would have travelled 4.5 miles (1.5 miles × 3 hours).
After 4 hours, it would have travelled 6 miles (1.5 miles × 4 hours).
After 5 hours, it would have travelled 7.5 miles (1.5 miles × 5 hours).
I hope this helps!
A car manufacturer produced 5,000 cars for a limited edition model. Dealers sold all of these cars at mean price
of $36,000 with a standard deviation of $3,000. Suppose we were to take random samples of 9 of these cars
and calculate the sample mean price x for each sample.
Answer:
μₓ = 36,000 dollarsσ ₓ= 1,000 dollarsShow work:to find μₓ = 36,000 dollars:
Look in the question, it states that the mean is $36,000.
to find σ ₓ= 1,000 dollars:
[tex]\frac{3000}{\sqrt{9} } = 1000[/tex]3x+4y=-36, -2x+4y=-16
Answer:
3x+4y=-36
x= -4/3y-12
-2x+4y=-16
x= 2y+8
Determine the GCF of 3x^3,6x^2 and 15x
Answer:
3x
Step-by-step explanation:
The GCF would be 3x, if you took out 3x from those numbers you'd be left with x^2, 2x, and 5, which can't be reduced any further.
Suppose you earned $15 from your job last week. You want to save $3 and buy
some books that cost $4 each. To find how many books you can buy, solve the
equation.
plz help
Solve for x for the equation 5x+2=12
Answer:
x=12
Step-by-step explanation:
Subtract 2 from both sides
Subtract 2 from 12 to get 10
Divide both side by 5
Finally,divide 10 by 5 to get 2
5(2)+2=12