Mathematics College

The ratio of the diameters of two similar cylinders is 4/5 What is the ratio of their surface areas? of their volumes?

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Answer 1

Answer:

Step-by-step explanation:

Related Questions

The relationship below is proportional true or false

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Answer:

false.........

Step-by-step explanation:

......

The origin is a point anywhere along the x-axis. True or False

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Answer:

False

Step-by-step explanation:

The origin is at 0 on the x-axis, and 0 on the y-axis. Hence, (0,0) lies on both the axis.

hope this helps and is right. p.s. i really need brainliest :)

if my answer is wrong then i am incredibly sorry!

The statement "The origin is a point anywhere along the x-axis" is False.

What is Origin?

Origin is referred to as the first point or the starting point from which we begin our calculations or measurements in mathematics, particularly in the subject of coordinate geometry. The 0 on a ruler is the point at which we begin taking measurements; as a result, it is referred regarded as the scale's origin.

As, The intersection of the x and y axes in a coordinate plane is where the origin is located.

Coordinates can be used to name any point on the coordinate plane.

The coordinates are where the origin is ( 0, 0 ).

So, the x- coordinate is 0 and y- coordinates is 0.

Hence, the given statement is False.

Learn more about Origin here:

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JUST THE SECOND ONE EASY PLS ASAP

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Answer:

Step-by-step explanation:

Use an online calculator

Assume that y varies inversely as x. If, y, is 2.4 when x = 5, which is an equation that relates x and y?

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k=y•x
Inverse means 1/variable
y=k•1/x
y=k/x
k=y•x

x=5
y=2.4
k=2.4 • 5
k=12

Answer is:

y=12/x

Good luck.

In a classroom of 24 students, five-eighths of the students brought their lunch to school. How many of the students in the classroom does this represent?
(Explain how you got your answer please)

(1) 3
(2) 5
(3) 10
(4) 15
(5) 20

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Answer:In my opinion 10 is the answer

hope it helps you

Can someone pls help me?

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Answer:

Step-by-step explanation:

a complementary angle measures 90 degrees. minus the 64 would be 26

i really can't figure this out

A slope

B x-intercept

C y-intercept

D none of the above

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Answer:

A, slope

I am pretty sure it is the slope

Answer:

I think the answer is B (x-intercept)

Step-by-step explanation:

Have a nice day :)

Help help help help help

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Answer: A person must be less than 3’6 because 42 inches=3’6 and > symbol indicates less than. Other answer is greater than.

I need help solve this !! Pls help pls not links ;)

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Answer:

A / D / E

Step-by-step explanation:

f (1) = 1

f(2) = 5

f(3) = 9

Trend lines
The scatterplot below shows several data
points and an approximate trend line for
the data.
у
350
300
250
200
150
100
SO
D 200 400 600
1.
Which is the best estimate of the value
of x that corresponds to the y value of
325? (8.18, 8.1C, 8.1E, 8.1F)
A 175
B 700
C 625
D 125

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The answer is D fasho fasho

Pencils 6 18 Erasers 2 will mark brainlest

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Answer:

this is your answer as it lies in a same ratio..

Which graphs are proportional?

A.
B.
C.
D.

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Answer: Hello, There! your Answer is Below

C And D Are your Answer

Step-by-step explanation:

Hope this Helps you !!!

Have a great day!!!

Fine the volume please

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Answer:

212 m²

Step-by-step explanation:

4 x 4 x 5 = 80

6+6+50+30+40

how to calculate tax rebate

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Charge interest to the tax and you’ll get the rebate

please answer fast!!

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Answer:

x=70

Step-by-step explanation:

[tex]2x + 1 = 141 \\ 2x = 140 \\ x = 70[/tex]

Answer:

x=70

Step-by-step explanation:

I hope i was right have a good day!!

Two dice are tossed. Find the probability of getting the sum of the
dice equal to 16. (Hint: Draw a tree diagram of the possibilities of
two tosses of a die, and then find the sum of the numbers on
each branch.)

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Answer:

Step-by-step explanation:

If you are talking about a die with 6 faces, then 16 isn't possible. 12 is the highest possible number.

If you are talking about some other kind of die, you have to specify it.

I'm going to assume you made a mistake and meant 6.

There are 5 ways to get six

3 - 3

4 - 2

2 - 4

5 - 1

1 - 5

There are 36 ways of throwing 2 dice.

So the probability = 5/36 = 0.1389

If you really did mean 16 then the probability = 0

Help me !!!
Please I really need it

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Answer:

i don't know

Step-by-step explanation:

I will give Brainiest

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Jdjsjdkjdjxkxkeowppwpxñflflglflflf

Find m∠D

m∠D=

greatly appreciate if done asap:)

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Should be 25 since triangle are 180 degrees

The function f (t) = 12(1 +0.03) can be used to determine the population, in thousands of a town t years
since 1955. According to the function, what was the population of the town in 1955 and what was the percent
increase in population from year to year?
Enter a number in each box to correctly complete the sentence
The population of the town in 1955 was
people, and the percent increase in
population from year to year was

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f= the original amount of people, a steady growth throughout the years

t=time

In 1955 the population was 12 thousand. Compared to the current population of 12.36 thousand, the population then was roughly 77%.

A function assigns the values. The population of the town in 1955 was 12 thousand people, and the percent increase in population from year to year was 3%.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

The function that gives the population of the town is given, therefore, the following can be written,

Since the year 1955 the value of t=0. Therefore, The population of the town in 1955 was 12 thousand.

The percentage increase in population from year to year is 3%.

Hence, The population of the town in 1955 was 12 thousand people, and the percent increase in population from year to year was 3%.

Learn more about Function:

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Please help please please ASAP please please help please

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Answer:

true

Step-by-step explanation:

the total surface area of a solid is the sum of all faces both the bottom (base) and the top

Education reform is one of the most hotly debated subjects on both state and national policymakers’ list of socioeconomic topics. Consider a linear regression model that relates school expenditures and family background to student performance in Massachusetts using 224 school districts. The response variable is the mean score on the MCAS (Massachusetts Comprehensive Assessment System) exam given to 10th graders. Four predictor variables are used: (1) STR is the student-to-teacher ratio in %, (2) TSAL is the average teacher’s salary in $1,000s, (3) INC is the median household income in $1,000s, and (4) SGL is the percentage of single-parent households. A portion of the data is shown in the accompanying table.

Score STR(%) TSAL(in $1000) INC(in $1000) SGL(%)
227.0 19.00 44.01 48.89 4.70
230.67 17.90 40.17 43.91 4.60
. . . . .
. . . . .
230.67 19.20 44.79 47.64 5.10

Required:
a. For each explanatory variable, discuss whether it is likely to have a positive or negative causal effect on Score.
b. Find the sample regression equation. Are the signs of the slope coefficients as expected?
c. What is the predicted score if STR = 18, TSAL = 50, INC = 60, SGL = 5?
d. What is the predicted score if everything else is the same as in part(c) except INC = 80?

Answers

Answer:

STR= -

TSAL= +

INC=+

SGL=-

231.89 - .50 - .02 + .29 -.88

B2:

STR=Y

TSAL=N

INC=Y

SGL=Y

234.89

240.69

Step-by-step explanation:

Your cousin is building a sand box for his daughter

How much sand will he need to fill the box

how much paint does he need for the box

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Answer:

volume of box(v)=l×b×h

=1×6×4

=24ft^3

so it required 24volume sand to fill the box

Whatever answer this question first gets a thanks and 14 points Please answer quickly ✌

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Answer:

5) x = 25

6) x = 48

Step-by-step explanation:

65 + x = 90

65 - 65 + x = 90 - 65

x = 25

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

A complementary angle is 90 degrees.

42 + x = 90

42 - 42 + x = 90 - 42

x = 48

5. Simplify
(7x2+ 8) - (x2 - 2)

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Answer:

[tex](7 \times 2 + 8) - ( {x}^{2} - 2) \\ (14 + 8) - ( {x}^{2} - 2) \\ 14 + 8 - {x}^{2} + 2 \\ 22 + {x}^{2} + 2 \\ 24 + {x}^{2} [/tex]

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

what factors determine the amount of interest earned on a fixed principal

Answers

Answer:

The interest rate and the number of compounding periods best describe the factors that determine the amount of interest because they encompass the ideas of time and yield.

Step-by-step explanation:

Hope this helps!!!

What’s the correct answer for this?

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Answer:

Step-by-step explanation: A

Answer:

A = 2

B= 2

C= -6

Step-by-step explanation:

1. 2x³ - 8x² -24x -Factor

2. 2x (x² - 4x - 12) - Factor

3. 2x (x - 6) (x + 2)

ax (x + b) (x + c)

A bag contains 3 red balls and 1 blue ball. A second bag contains 1 red ball and 1 blue ball. A ball is randomly picked from each bag and is then placed in the other bag. What is the expected number of red balls in the first bag? (mean or expected value)

Answers

Answer:

"2.82" seems to be the correct solution.

Step-by-step explanation:

As we know,

A bag (Bag A) contains,

Red balls = 3

Blue ball = 1

A second bag (Bag B) contains,

Red balls = 1

Blue ball = 1

Now,

⇒ P(Bag A, red ball) = [tex]P(A)\times P(r)\times P(r)[/tex]

On substituting the values, we get

⇒ = [tex]\frac{1}{2}\times \frac{3}{4}\times \frac{2}{3}[/tex]

⇒ = [tex]\frac{1}{4}[/tex]

Similarly,

Probability of second bag will be:

⇒ P(Bag B) = [tex]\frac{1}{2}[/tex]

hence,

In the first bag (Bag A), the expected number of red balls will be:

⇒ [tex]E(n)=\Sigma P(n)\times n[/tex]

On substituting the values, we get

⇒ [tex]=3 (\frac{1}{4})+2(\frac{1}{8} )+4(\frac{1}{24} )+3(\frac{1}{12} )+3(\frac{4}{20} )+4(\frac{1}{20} )+2(\frac{3}{20} )+\frac{2}{20}[/tex]

⇒ [tex]= \frac{169}{60}[/tex]

⇒ [tex]=2.82[/tex]

A boat heads in the direction N 78° E. The speed of the boat relative to the water is 21 mi/h. The water is flowing directly south. It
is observed that the true direction of the boat is directly east. (Assume that the i vector points east, and the j vector points north.)
(a) Express the velocity of the boat relative to the water as a vector in component form. (Round your answer to one decimal
place.)
(20.5, 4.4)

Answers

Answer:

it is the vector

Step-by-step explanation:

Rectangle QRST is dilated with the origin as the center of dilation to create rectangle Q'R'S'T'.

Which rule represents the dial toon applied to rectangle QRST to create triangle QRST

Answers

Answer:

Rule: dilation about the origin by a scale factor of 2

Step-by-step explanation:

Given

See attachment for QRST and Q'R'S'T

Required

The dilation rule

First, we calculate the scale factor (k)

From the attachment, we have:

[tex]QR = 4[/tex]

[tex]Q'R' = 8[/tex]

k, is then calculated as:

[tex]k = \frac{Q'R'}{QR}[/tex]

[tex]k = \frac{8}{4}[/tex]

[tex]k =2[/tex]

Hence, QRST is dilated by a factor of 2

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