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shutvik [7]
2 years ago
13

40 increased by twice a number .

Mathematics
1 answer:
igor_vitrenko [27]2 years ago
8 0

Answer:

40+nx2

Step-by-step explanation:

n=a number

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Need help with this question -9×3-4^2/ 3^2 + 2^2
Vesnalui [34]
-9 × 3 - 4² = -27 - 16 = -43

3² + 2² = 9 + 4 = 13

(-9 × 3 - 4²)/(3² + 2²) = -43/13 = -3 4/13
3 0
3 years ago
Part 1
andreev551 [17]

Answer:

see explanation

Step-by-step explanation:

Part 1

The n th term of a geometric sequence is

a_{n} = a(r)^{n-1}

where a is the first term and r the common ratio

Given a_{6} = 128, then

a(2)^{5} = 128, that is

32a = 128 ( divide both sides by 32 )

a = 4 ← first term

Part 2

a_{21} = 4(2)^{20} = 4 × 1048576 = 4194304

6 0
3 years ago
An observer took a time-exposure photograph of polaris and five nearby stars. how many hours were required to show their star pa
olga55 [171]
Photographing stars requires you to keep your exposure open for a long time. Taking pictures of star trails would take about 30 minutes to three hours. If you multiply that for the 6 stars stated above in the problem then you would be needing that much time if the stars were close and approximately 3 to 18 hours capture their star trails if they were far apart from each other.
5 0
2 years ago
A. 6.2 cm2
Flauer [41]

Answer:

The answer is "Option A".

Step-by-step explanation:

\to Base= 2 \ cm\\\\\to  height=3.1 \ cm\\\\  

Formula:

\bold{Area= base \times height}\\\\

         =2 \times 3.1 \\\\= 6.2 \ cm^2

if the height value is 3 then area is =6

4 0
3 years ago
A set of prime number between 5 and 15.express it in listing and setbuilder methods<br>​
Zielflug [23.3K]

Answer:

A set of prime number between 5 and 15.

Listing method:{ 7,11,13}

Set builder method:{X:X is a set of prime number between 5 and 15}

In listing method,the elements are listed inside the brackets.Listing method are also called rooster method.

In set builder method,the elements are represented by a variable stating their common properties.Set builder method are also called rule method.

Hope this helps...

Good luck on your assignment..

7 0
3 years ago
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