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3 years ago

Choose the arithmetic series that is associated with this summation.

Mathematics

1 answer:

Verizon [17]3 years ago

7 0

Plug n = 1 into the expression 20-9n and we get
20-9n = 20-9*1 = 20-9 = 11

So 11 is the first term of the series that we add up. Therefore the answer must be choice C, which has 11 listed as the first term added

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A word problem that can be solved by finding the number that have 4 as a factor

drek231 [11]

Answer: 1,2,4

Step-by-step explanation:

3 0

2 years ago

1. The company has agreed on a 9- character password format, comprised of uppercase letters, lower case letters, and digits (0-9

pochemuha

Answer: a) 1977060966, b) 146581344.

Step-by-step explanation:

Since we have given that

There are 10 numbers,

There are 26 lower case letters,

There are 26 upper case letters,

Since the first 3 characters have to be digits and next 6 can be upper or lower.

So, a) repetitions are allowed:

$10^3\times (26+26)^6\\\\=10^3\times 52^6\\\\=1977060966$

b) repetitions are not allowed:

$^{10}P_3\times ^{52}C_6\\\\=720\times 20358520\\\\=146581344$

Hence, a) 1977060966, b) 146581344.

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2 years ago

Which best describes the structure outlined in the bridge.

Arisa [49]

Answer:D

Step-by-step explanation:

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2 years ago

What is the constant of proportionality between y and x in the graph?

KatRina [158]

Answer:

y=3x

Step-by-step explanation:

y=kx, where k is constant

3y, 1x...so 3y = 1x

check: looking at the graph at 4.5y, 1.5x where y and x intersect...

4.5=3(1.5)

3 x 1.5 = 4.5

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2 years ago

The sum of two numbers is x. If one of the numbers is 12, what is the other ?

Vlad1618 [11]

If the sum of two numbers is x

Then the equation is like this:

a+b = x

Then it says one of the number is 12. Change either a or b into 12

12 + b =x

If we want to find the other number, we need the make it into the subject

b = x - 12

Hope that help.

6 0

3 years ago

Read 2 more answers