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2 years ago

The nth term of a sequence is n(n − 1). - What is the 10th term?

Mathematics

2 answers:

LenKa [72]2 years ago

8 0

Answer:

a+9d , a9+d

Step-by-step explanation:

hope it was helpful to you

please mark my answer as brainlist answer plz

Igoryamba2 years ago

4 0

Answer:

Step-by-step explanation:

n=10

n(n-1)=10(10-1) = 10(9)=90

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podryga [215]

Answer:

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Step-by-step explanation:

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Alexxandr [17]

Answer:

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Raquel has created a program for a robot. The robot travels 10 meters and stops. The program is designed for wheels that are 2.5

Grace [21]

Answer:

Raquel should adjust the number of rotations to 115.81 rotations

Step-by-step explanation:

step 1

Find the circumference of the wheels that are 2.5 cm in diameter

The circumference is equal to

$C=2\pi r$

we have

$r=2.5/2=1.25\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.25)$

$C=7.85\ cm$

step 2

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/7.85=127.39\ rotations$

step 3

For a diameter of 2.75 cm find how should she adjust the number of rotations so that the robot travels the same distance

Find the circumference of the wheels

The circumference is equal to

$C=2\pi r$

we have

$r=2.75/2=1.375\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.375)$

$C=8.635\ cm$

step 4

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/8.635=115.81\ rotations$

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2 years ago