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nalin [4]
3 years ago
11

The cost of a newsletter subscription is $20 per year. The cost is expected to increase 10% each year. Which expression can be u

sed to find the cost n years from now? What will the expected cost be at the end of 3 years? A) 20(1.1)n; $26.62 B) 20(1.1)n ; $24.30 C) 20(1.1)(n + 1); $29.28 D) 20(1.1)(n + 2) ; $32.21
Mathematics
1 answer:
a_sh-v [17]3 years ago
4 0
Selection A is appropriate.

_____
20*1.1^n is the general expression for the cost n years in the future.
20*1.1^3 = 26.62 is the cost 3 years in the future.
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HURRY! Point H is the circumcenter of triangle JKL. Which must be true?
pav-90 [236]
A circumcentre is the centre of the circumcircle.  
The circumcircle of a triangle is the circle that passes through all three vertices.

Since all radii of a given circle are equal, we see that all the distances from H (circumcentre) to the vertices of the triangle are equal, namely
JH=KH=LH
Only one of the above answer choices is true.
7 0
3 years ago
What is the volume of a sphere with a radius of 7 cm? Sphere V = 4 3 πr3 1. Substitute the radius into the formula:    V = 4 3 π
netineya [11]

Answer:

1436.75504 or 1372/3π cm^3

Step-by-step explanation:

The volume of a sphere can be found using:

V = 4/3 πr^3

We know the radius is 7, so we can substitute 7 in for r

V = 4/3 π7^3

Evaluate the exponent

V = 4/3 π 343

If we want the answer in terms of pi, multiply the two other numbers, that are not pi: 4/3 and 343.

v= (4/3*343)π

v=1372/3π

If we want an exact answer, multiply 1372/3 and pi

v=1436.75504

So, the volume is 1436.75504 or 1372/3 π cm^3

4 0
3 years ago
Read 2 more answers
Please pick one of the options.
olchik [2.2K]

9880 different possibilities are there in Sally's new combination option second 9880 is correct.

<h3>What is permutation and combination?</h3>

A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.

We have:

Total unique numbers consists in a Sally locker = 3

From the digits 0 to 39

Total numbers = 40

Apply combination formula:

= C(40, 3)

= 40!/(3!37!)

= 9880

Thus, 9880 different possibilities are there in Sally's new combination option second 9880 is correct.

Learn more about permutation and combination here:

brainly.com/question/2295036

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6 0
1 year ago
Hi! ❤️ I’m looking for help here thanks.
abruzzese [7]

Answer:

i dont remember how to do this and i just did this last year

Step-by-step explanation:

8 0
2 years ago
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What is the circumference of circle with a diameter of 9 feet? Use 3.14 for tt
ankoles [38]

Answer:

28.26

Step-by-step explanation:

The formula for calculating diameter is π<em>d</em> (pi times the diameter), so 3.14 times 9 is 28.26.

4 0
3 years ago
Read 2 more answers
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