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sukhopar [10]
3 years ago
6

Write an explicit formula for an, the nth term of the sequence 1, 11, 21

Mathematics
1 answer:
madreJ [45]3 years ago
5 0

Answer:

an = 10n - 9.

Step-by-step explanation:

This is arithmetic with first term a1 = 1 and common difference 10.

an = a1 + d(n-1)

= 1 + 10(n - 1)

= 1 + 10n - 10

= 10n - 9.

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There is a 0.05 chance that we will have an earthquake this year. What is the probability we won't have an earthquake this year
viktelen [127]

Answer:

0.95‬ chance or 95% chance.

Step-by-step explanation:

If there is a 0.05 chance of there being and earthquake subtract 0.05 from 1 to find out what the chance of not having an earthquake it.  Since probability is a fraction out of a whole percentages can be used to find the answer.  

3 0
3 years ago
A silo is shaped like a cylinder with a cone on top. The radii of the bases of the cylinder and cone are both equal to 8 feet. T
dangina [55]
Answer: 6702.1

Explanation:
Volume of cylinder = πr^2h
= π(8^2)25
= 1600 π

Volume of cone = πr^2(h/3)
= π(8^2)(25/3)
= π (64)(25/3)
= (1600 π)/3

Add these two numbers
= 1600 π + (1600 π)/3
= (4800 π+ 1600 π)/3
= 6400 π/ 3
=6702.06≈6702.1
7 0
3 years ago
Read 2 more answers
What is the area of this figure?<br><br> A. 102<br> B. 132<br> C. 168<br> D. 340
matrenka [14]
The total area of the figure is the area of the square plus the area of the rectangle plus the area of the triangle.
 area of the square: (6)*(6)=36cm^2
 area of the rectangle: (7)*(6)=42cm^2
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 total area
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8 0
3 years ago
Alina is building a roof for a dog house. She uses plywood to make the roof with the dimensions shown, but with an open bottom.
mafiozo [28]

Step-by-step explanation:

Alina is building a roof for a dog house with the dimensions shown. She uses plywood to make the roof with the dimensions shown, but with an open bottom.

A net of a square pyramid has a square base with side lengths of 4 feet, and 4 triangular sides with heights of 3 feet.

Find the surface area of the roof.

The area of each triangular face is  

✔ 6

ft2.

The surface area of the roof is  

✔ 24

ft2.

6 0
3 years ago
A car dealer organizes the inventory of a specific model of car into a frequency table comparing the type of car and the model y
IRINA_888 [86]

Answer:

Given that a car is a coupe, there is a 10% chance it is from the previous model year.

Step-by-step explanation:

The consideration "Given that a car is from the previous model year, there is a 10% chance that it is a coupe." wouldn't give much information. Previous year models are 10% Coupe and 25% Sedan.

Same for consideration "There is a 10% chance that the car is from the previous model year." This consideration would be good if only a specific model would be taken.

Consideration "There is a 10% chance that the car is a coupe." makes no sense because, in order for this to be true, 90% of specific models would be a sedan which table clearly shows 25%.


3 0
2 years ago
Read 2 more answers
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