What is the ratio of their surface areas

What Is The Ratio Of Their Surface Areas

Answers

Answer 1

Answer:

[tex]\text{A. }4:81[/tex]

Step-by-step explanation:

Since surface area consists of the sum of the outer faces of each polygon, the ratio of the two surface areas will be equal to the ratio of the side lengths squared (since we multiply them to get area).

The ratio of the corresponding side lengths of the solids are [tex]2:9[/tex]. Therefore, the ratio of their surface areas must be [tex]2^2:9^2=\boxed{4:81}[/tex]

Answer 2

Answer:

A

Step-by-step explanation:

i hope this helped i tried


Related Questions

A gas pump filled a 27 gallon tank in 6 minutes.How many minutes will it take to fill an 18 gallon tank?

Answers

Answer:

4 minutes

Step-by-step explanation:

27  gallon -> 6 min

1 min -> 27 ÷ 6

             = 4.5 gallon

18 ÷ 4.5 = 4 min

A toy factory can produce 135 toys in 5 hours. At this rate, how many hours will it take to produce 243 toys?

Answers

Answer:

9 hours

Step-by-step explanation:

you can find the unit rate by dividing 135 by 5 to get 27 toys per hour

243 ÷ 27 = 9

The distance around a circular park is 176 yards. What is the area of the park? Use 22/7 for π.

Answers

Answer:

2464 yd²

Step-by-step explanation:

Use the circle circumference formula: 2πr

2·[tex]\frac{22}{7}[/tex]·r=176

[tex]\frac{44}{7}[/tex]r=176

r=176·[tex]\frac{7}{44}[/tex]

r=28

Area of circle formula: πr²

[tex]\frac{22}{7}[/tex]·r²

[tex]\frac{22}{7}[/tex]·28²

[tex]\frac{22}{7}[/tex]·784

=2464 yd²

3/8 of the 20,000 people attending a concert wore shorts. How many people were wearing shorts? Pls help step by step

Answers

Answer:

If a question says "A is a 29% of B," then you can write

A

=

29

100

B

.

Step-by-step explanation:

Help me with area, please.

Answers

Answer:

Num. 2: A = 25, Num. 3 = 63, Num. 4 = 80

Step-by-step explanation:

I'll help with as many as I can, so a few of them I won't be able too answer. You should re-post those later. Good luck, hope this helps.

For number 2:

First, turn the triangle into a rectangle by cutting it in half and attaching it to the other half so it forms a rectangle.

Since you cut the triangle in half, you also have to split 5 in half, so the bottom length is now 2.5.

Now, simply multiply 2.5 by 10, and you have the area for number 2.

The area for number 2 is 25.

For number 3:

This one is much easier. Just think of the shape as a normal square that has been tipped to the side. That means that you would solve for area the same way: 9 x 7, which means that the area for number 3 is 63.

For number 4:

This one is also easy. Simply cut, and paste. Now the right side is 10, and the top side is 8. Multiply, and the area will be 80 m.

Please re-post 1 and 5, as I am not able to solve them. Sorry this answer took so long!

j=the money used in south Africa is is called the rand . the estrange rate 7 rand for $1. Find how many dollars you would receive if you estrange 21 rand.

Answers

Answer:

$3

Step-by-step explanation:

21 rand /7

What is the length of Line segment A C?

3 ft
4 ft
18 ft
12 ft

On edge unity pls help

Answers

Answer:

4

Step-by-step explanation:

because its 4

The length of Line segment AC is 12ft.

Similar triangles

The given triangle ABC is similar to triangle BMN

The length of AM = BM = 4ft

The length AB = BM + AM = 4 ft + 4ft = 8ft

The length of Line segment AC is calculated by using similar triangle proportions as follows;

[tex]\frac{AB}{BM} = \frac{AC}{MN} \\\\\frac{8}{4} = \frac{AC}{6} \\\\2 = \frac{AC}{6}\\\\AC = 2(6)\\\\AC = 12 \ ft[/tex]

Learn more about similar triangles here: https://brainly.com/question/11899908

please help me solve
please show how you got the answer

Answers

The missing integer is 10. Because before the box those numbers all together = -10. So all you had to do was find a number which could go there that equaled 0 which in this question is 10.

Suppose $p$ and $q$ are inversely proportional. If $p=28$ when $q=7$, find the value of $p$ when $q=49$.

Answers

Answer:$p$ =$4 when $q=49$.

Step-by-step explanation:

If $p$ and $q$ are inversely proportional, then mathematically, they are represented as

$p$ ∝ 1/$q$

So that introducing the constant of proportionality,k becomes

$p$ =k 1/$q$

$p$ =k /$q$

When $p=28$ when $q=7$,K becomes

$p$ =k /$q$

$28=K/ $7

k=$28 x $7 =$196

Now when $q=49$.,  $p$ becomes?

$p$ =k /$q$

$p$ =$196/49$

$p$ =$4

Which side lengths form a right triangle?​

Answers

Answer:

[tex]\text{B. }1.5, 2, 2.5,\\\text{C. }4, 4, \sqrt{32}[/tex]

Step-by-step explanation:

All right triangles must follow the Pythagorean Theorem [tex]a^2+b^2=c^2[/tex] where [tex]c[/tex] is the hypotenuse of the triangle.

Verify:

[tex]1.5^2+2^2=2.5^2\checkmark,\\4^2+4^2=\sqrt{32}^2\checkmark[/tex]

what is the Quotient of 16.29÷100​

Answers

Answer:

~0.16

Step-by-step explanation:

quotient, i believe, is just the answer to a division problem. divide normally and u get 0.1629

Answer:

Maybe the answer is 0.1629

The area of cross section of the large piston in a hydraulic machine is 1m² and that of small piston is 0.5m².calculate the force that must be applied on the small piston to lift a load of 1000N on the large piston

Answers

Answer:

The force that must be applied on the small piston has a magnitude of 500 newtons.

Step-by-step explanation:

By Pascal's Principle, we know that pressure within any point of a closed hydraulic system is the same. Hence, the hydraulic machine can be described by the following model:

[tex]\frac{F_{1}}{A_{1}} = \frac{F_{2}}{A_{2}}[/tex] (1)

Where:

[tex]F_{1}, F_{2}[/tex] - Forces applied on the small and large pistons, in newtons.

[tex]A_{1}, A_{2}[/tex] - Areas of the small and large pistons, in square meters.

If we know that [tex]A_{1} = 0.5\,m^{2}[/tex], [tex]A_{2} = 1\,m^{2}[/tex] and [tex]F_{2} = 1000\,N[/tex], then the force to be applied on the small piston is:

[tex]F_{1} = \left(\frac{A_{1}}{A_{2}} \right)\cdot F_{2}[/tex]

[tex]F_{1} = \left(\frac{0.5\,m^{2}}{1\,m^{2}} \right)\cdot (1000\,N)[/tex]

[tex]F_{1} = 500\,N[/tex]

The force that must be applied on the small piston has a magnitude of 500 newtons.

Examine the diagram of circle O, where JW⎯⎯⎯⎯⎯⎯⎯⎯ and JV⎯⎯⎯⎯⎯⎯⎯ are tangent to circle O at points W and V, respectively. The diagram as described in the problem. © 2016 StrongMind. Created using GeoGebra. If JW=x8+4 and JV=x4+2, what is the length of JW?
a. 2
b. 6
c. 16
d. 10

Answers

Answer:

6

Step-by-step explanation:

Just got it right.

i will mark brainest if you can tell me what x+l cubed it

Answers

Answer: XLCubed (XLCubed Ltd) is a business intelligence software and consulting services company. ... XLCubed software is used by business end users to create dynamic reports, dashboards, and planning solutions which are then deployed either via Microsoft Excel or the Web.

Step-by-step explanation:

dhdhvxhdhdbdhdbd......

Answers

Answer: 4.4

Step-by-step explanation:

it would be 4.4 because 10 x 6.9 = 69

have a great day! (brainliest?)

Answer:

9.7

Step-by-step explanation:

tan 44° = x / 10

x = 10 tan 44°

9.7

Jenna sells apples and pears. If 20 apples and 60 pears re sold every hour, there will be 80 pears when all the apples are sold. If 60 apples and 20 pears are sold every hour, there will be 400 pears when all the apples are sold. How many pears are there at the stall?

Answers

Answer:

There are 1,360 pears.

Step-by-step explanation:

Suppose that there are P pears and A apples.

We know that:

"If 20 apples and 60 pears are sold every hour, there will be 80 pears when all the apples are sold."

Suppose that all of these are sold after N hours, then:

20*N = A

80*N = P - 80

We also know that:

"if 60 apples and 20 pears are sold every hour, there will be 400 pears when all the apples are sold."

60*N = A

20*N = P - 400

Then we have four equations:

20*N = A

80*N = P - 80

60*N = A

20*N = P - 400

From the first one and the second one, we get:

20*N = A = 20*N = P - 400

A = P - 400

Now we have 3 equations:

80*N = P - 80

60*N = A

A = P - 400

Now we can just replace the third equation into the second one, then we get:

60*N = A = P - 400

Now we have two equations:

80*N = P - 80

60*N = P - 400

Now, remember that we want to find the number of pears, so we want to find the value of P.

To do it, we can take the quotient of the two equations, so we get:

(80*N)/(60*N) = (P - 80)/(P - 400)

8/6 = (P - 80)/(P - 400)

Now we can solve this for P

(8/6)*(P - 400) = P - 80

(8/6)*P - (8/6)*400 = P - 80

(8/6)*P - P = (8/6)*400 - 80

(2/6)*P = (8/6)*400 - 80

P = (6/2)*( (8/6)*400 - 80 )

P = 3*( (8/6)*400 - 80 ) = 1,360

There are 1,360 pears.

Which equation represents an inverse variation?
O y = 2x
Oy-
O yo
X
O y = -5x

Answers

O y = 2x is the answer

I. Write the answer with the proper label. ( 2 pts each)


Calculate the distance .

30 minutes at 120 km/h

2 ½ hours at 70 miles/h


B. Calculate the speed.

A car travels 500 km in 6 hours, find the average speed.

A man ran for 10 km in 1.25 hours, what was his average speed?


C. Calculate the time.

210 kilometers at 120 km/h

90 miles at 60 miles/h


II. Identify what is missing then solve. Do not forget to label your answer. (4 pts)


Every Friday after work, Mark travels from Bulacan to Santa Rosa to visit his family. The trip takes 4.2 hours at an average speed of 65 km/h. How many kilometers does he travel from Bulacan to Santa Rosa?


Katrina drove 325km in 5 hours while Martha drove a total of 210 km in 3 hours. Who drove faster? By how much?


with a solution

Answers

S = D/t
120 = D / 0.5
D = 120*0.5
D = 60 km

S = D/t
70 = D / 2.5
D = 70*2.5
D = 175 miles

The graph of y=4x2-4x-1=0

Answers

Answer:

Here we have the equation:

y = 4*x^2 - 4*x - 1

And we should have the graph (you can see it below this answer)

Now we want to find the solutions of:

4*x^2 - 4*x - 1 = 0

These solutions will be the two values of x at which the graph of our function intersects the line y = 0, that is the x-axis.

Then we need to find the two values of x at which our graph intersects the x-axis.

In the graph, we can estimate the solutions as:

x = -0.2

x = 1.2

To find the exact solutions we can use the Bhaskara's equation, and we will find that the solutions are given by:

Then the two solutions are:

x = (4 + 5.66)/8 = 11.2075

x = (4 - 5.66)/8 = -0.2075

Step-by-step explanation:

What is the measure of

Answers

Answer:   A

Step-by-step explanation: IS THE RIGHT ANSWER 75 DEGREES.

-8x+4=-26x+1

please help me out​

Answers

Answer:

0

Step-by-step explanation:

I did it in standard form but this is the equation 18x + 3 = 0

Answer:

x = -1/6

Step-by-step explanation:

-8x+4=-26x+1

4-1 = -26x+8x

3 = -18x

3/-18 = x

x = -1/6

Multiply -2x^5(4x^2)​

Answers

Answer:

-8x^7

Step-by-step explanation:  

Hint :

Formula :

[tex] a^ma^n=a^{m+n}[/tex]

Answer :

[tex] - 8 {x}^{7} [/tex]

Explanation :

[tex] - 2x^5(4x^2)[/tex]

[tex]−2 \times 4x^5x^2[/tex]

[tex]−2 \times 4( {x}^{2} x^5)[/tex]

[tex]−2 \times 4 {x}^{2 + 5} [/tex]

[tex]−2 \times 4x^7[/tex]

[tex] - 8 {x}^{7} [/tex]

Hope it is helpful...

Hi I need help can someone please help

Answers

Answer:

Angles 1 and 2 are 115 degrees. Angles 3 and 4 are 65 degrees.

Step-by-step explanation:

7x - 4 + 3x + 14 = 180 (angles 1 and 3 form a straight line so they add to 180 degrees)

10x + 10 = 180

10x = 170

x = 17

m<1 = 7(17) - 4 = 115

m<3 = 3(17) + 14 = 65

Opposite angles are equivalent so m<2 = 115 and m<4 = 65.

Some triangles are drawn on squared paper. Which 3 triangles are congruent to one another?

Answers

Answer:

a, e, and d are all congruent

Step-by-step explanation:

they r all the same size and lengths

Those three triangles are; A,D,E

How? well see the attachment for this, have tried to make you understand.

I'm really lost . can somebody plz help ​

Answers

Answer:

7.5

Step-by-step explanation:

Median = middle number in terms of value

To make it easier to identify the middle number lets list the number from least to greatest

1, 4, 4, 7, 8, 8, 10, 15

Now we can simply find the middle number

We notice that there are two middle numbers as there is an even amount of numbers

Those two numbers being 7 and 8

When finding the median, if there are two middle numbers, you simply add the two numbers together and divide the sum by two to get the median.

So median = 8 + 7 = 15 / 2 = 7.5

Answer:

7.5

Step-by-step explanation:

The median of a set of numbers is the middle number, so we have to order them first from least to greatest. The order would be 1, 4, 4, 7, 8, 8, 10, 15. You can see that there are an even number of numbers, so if we take the two numbers in the middle of the order (7 and 8) and add them to get 15 and divide 15 by two, we get an answer of 7.5.

I hope this helped you!

Given A=(2,-7,6,1) and B=(-9,5,1-1)
If X - A = B, what is X?
(-7,-2,7,0)
(-11,12,-5,-2)
(-7,-12,5,0)
(11,-12,5,2)

Answers

Answer:

the correct answer is (-7,-2,7,0)

A-which temperature is warmer, -2 degrees Celsius or, -5 degrees Celsius B-Write and inequality to express the relationship between -2 and -5

Answers

Answer:

Step-by-step explanation:

On a number line, -2 appears to the right of -5, and therefore -2 is warmer than -5.  (Answer A)

The difference between -2 and -5 is -2 - (-5) = 5 - 2 = 3 degrees C  (Answer B)

In other words, -2 is 3 degrees C warmer than -5 degrees C.

Please I really need help, this is my final

Answers

Answer:

6.12

Step-by-step explanation:

tan 27≈0.51

Know that tan=[tex]\frac{opposite}{adjacent}[/tex]

0.51=[tex]\frac{x}{12}[/tex]

Multiply 12 on both sides

6.12=x

Can someone please explain to me how to find a scale factor ?​

Answers

Answer:

XYUV=123=4

Step-by-step explanation:

The scale factor is the ratio of the length of a side of one figure to the length of the corresponding side of the other figure. Here, XYUV=123=4 . So, the scale factor is 4

Answer: albert ein is correct

Step-by-step explanation:

What is the sign of -x/-y when x > 0 and y > 0?

Answers

Answer:

pretty sure its positive

Step-by-step explanation:

hope this helps, have  a great day!

Answer:

A is correct

Step-by-step explanation:

if we know that both x and y are positive, they are both going to be negative

and since we know that, -x divided by -y is the same as saying something negative divided by something negative which is ALWAYS positive because negatives cancel out leaving the answer positive something, something

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