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tankabanditka [31]
3 years ago
11

The surface area of one cube is twice the surface area of a second cube.

Mathematics
1 answer:
Usimov [2.4K]3 years ago
4 0

Answer:

2\sqrt{2} :1

Step-by-step explanation:

This question was linked from another one regarding the lengths of the cubes, you can find it here: brainly.com/question/22396279

That question gave you the ratio of the lengths, which is \sqrt{2} :1. Now in geometry, a general rule about solids is that if they are similar, the ratio of their volumes is the cube of the ratio of their edges. In a cube's case, every single cube known to mankind is similar as all the edges are the same length.

So the ratio of volumes would be \sqrt{2} ^3:1^3, which can be simplified as 2\sqrt{2} :1.

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Select ALL the correct answers.
DaniilM [7]
Be:
Number of hours: n

<span>The cost of renting a bike for the first hour is $7:
n=1→f(n)=f(1)=$7

</span>He is charged $2.50 for every additional hour of renting the bike:
f(n)=f(n-1)+2.50, for <span>n ≥ 2
</span>
f(1)=7; f(n)=f(n-1)+2.50, for <span>n ≥ 2 (sixth option)
</span>
f(n)=f(1)+2.50(n-1)
f(n)=7+2.50(n-1)
f(n)=7+2.50n-2.50
f(n)=2.50n+4.50 (fifth option)

Answers:
Fifth option: f(n)=2.50n+4.50, and
Sixth option: f(1)=7; f(n)=f(n-1)+2.50, for <span>n ≥ 2</span>
7 0
3 years ago
Please could I have some help :)
nirvana33 [79]

Answer:

a) x = 128 degrees

b) Angle APD is the arc angle, which is equal to the central angle x subtended by the arc.  Therefore angle APD = 128 degrees (and not 116 degrees)

Step-by-step explanation:

Given:

attached diagram

ABC is a straight line

Solution:

a) Find x

ABC is a straight line

angle ABD = supplement of CBD = 180-CBD = 180-116 = 64 degrees.

x is the central angle of the arc APD

so angle ABD is the inscribed angle which equals half of the arc angle =>

angle ABD = x/2 = 64 degrees

Solve for x

x/2 = 64

x = 2*64

x = 128 degrees

b.

Angle APD is the arc angle, which is equal to the central angle x subtended by the arc.  Therefore angle APD = 128 degrees (and not 116 degrees)

5 0
3 years ago
Read 2 more answers
Two-thirds of the difference between a number and four is six
hodyreva [135]
2/3 times x-4 = 6
thats the answer :) 
7 0
3 years ago
You have decided to purchase a car for $22,346. 16. The credit union requires a 10% down payment and will finance the balance wi
Natali [406]

The amount that the credit union will finance is $24169.60

We have given that the cost of the car is $22,346. 16

and the credit union required 10% down payment

and sale tax=7.6%

The license and title charges are $125. 13.

We have to determine that the  amount that the credit union will

finance Now  we have sale tax 7.6% for $22,346. 16

Therefore, we get

\frac{7.6}{100} \times 22,346. 16=1698.31

<h3>What is the amount that the credit union finance ?</h3>

credit union finance=cost of car+sales tax+the license and title  charges.

=22346.16+1698.31+12.13\\=24169.60

Therefore, the amount that the credit union will finance is $24169.60

To learn more about the credit union will finance visit:

brainly.com/question/15641576

4 0
2 years ago
Jan gives Ted a loan at 4% effective to be repaid by 10 annual payments of 100, followed by 5 annual payments of 200. Just after
olya-2409 [2.1K]

Answer:

139 ( D )

Step-by-step explanation:

Interest rate on loan = 4% = 0.04

Number of payments = 15

First 10 payments = 100 each

last 5 payments = 200 each

Calculating the value of K

K = [ ( 100 / 0.04 * ( 1-1 / 1.04^10 ) + 200/0.04 * ( 1-1 / (1 +0.04)^5)*  1 /1.04^10)

*  1.1 - 100 / 0.04 * ( 1-1 / (1+0.04)^5 ) - 200/0.04 * (1-1 /1.04^5) * 1/1.04^10)*0.04 / ( 1-1 / 1.04^5) * (1 + 0.04)^5

= 138.6051 ≈ 139

8 0
3 years ago
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