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qaws [65]
2 years ago
15

Find the 11th term of the arithmetic sequence -2x,-8,-9x,-11,-16x,-14

Mathematics
1 answer:
Valentin [98]2 years ago
5 0

Answer:

in an arithmetic series, an = a0+ (n-1) *d

 

that means the nth term is equal to the first term plus n-1 times the common difference.

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A number is called evil if it has 666 in it. How many 7 digit numbers are evil?
defon

Step-by-step explanation:

There are 5 different positions of 666:

666////

/666///

//666//

///666/

////666

The forward dashes represent any number from 0 to 9.

Case 1: "666////"

Number of ways = 10⁴ = 10,000.

Case 2: The other positions.

Since the 1st forward dash cannot be 0 (leading digit),

Number of ways for each position = 9 * 10³ = 9,000

Number of ways for all 4 positions = 9,000 * 4 = 36,000.

Total evil numbers = 10,000 + 36,000 = 46,000.

5 0
2 years ago
A man spent 15 minutes every day feeding the pigs. He spent 3 minutes less in the evening that he did after breakfast. For how m
Ierofanga [76]

15-3=12

12+h


Use this equation to help you solve.

8 0
3 years ago
A piece of toast came out of the toaster very overcooked.
Nikitich [7]

Answer:

It is a chemical change ⇒ 1st answer

Step-by-step explanation:

* Lets explain the statements to solve the problem

- <u><em>A chemical change</em></u> occurs when a new substance is formed through

 a chemical reaction

- Ex: cooking an egg

- <u><em>Change of reaction</em></u> is the rate of reaction it can be decreases or

  increasing

- <u><em>A phase change</em></u> is a change from one state to another without a

 change in chemical composition

- Ex: Condensation: the substance changes from a gas to a liquid

- <u><em>A physical change</em></u>, such as a state change or dissolving, but does

 not create a new substance

- Ex: Breaking a glass

* Lets solve the problem

- A piece of toast came out of the toaster very overcooked.

∵ It is like the cooking an egg

∴ It is a chemical change

7 0
3 years ago
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3 years ago
Erik needs a plumber and must decide between two companies. For a service visit, Plumber A charges $85 to send a plumber, plus $
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C. Plumber A and Plumber B will both charge $135 if they each work 2.5 h.
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