3 years ago

Which of the following is an arithmetic sequence with common difference 2

Mathematics

1 answer:

Marta_Voda [28]3 years ago

4 0

Answer:

Step-by-step explanation:

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What is the length of an arc with a central angle of 43? radians and a radius of 42 cm? use 3.14 for pi. round to the nearest hu

uysha [10]

L=R*angle, but the angle *must* be in radians. So, just translate 43 degrees into radians: 43 * pi / 180, and you'll get:

L = 42 * ( 43 * pi / 180 ) ~ 31.504666, which rounded to the nearest hundredth is 31.50 cm.

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2 years ago

A boat goes 24 miles at a constant speed in 4 hours against a river current.

Ne4ueva [31]

Answer:

8 miles per hour.

Step-by-step explanation:

24miles in 4 hours = 24/4=6 miles per hour.

24 miles in 3 hours = 24/3=8 miles per hour. The boat going with the current of the river is traveling at 8 miles per hour.

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2 years ago

What is the first term in the sequence for which d = -2 and a7 = 3?

AnnZ [28]

Answer:

Final answer is c. 15

Step-by-step explanation:

We need to find about what is the first term in the sequence for which d = -2 and a7 = 3

We will use nth term formula of arithmetic sequence.

$a_n=a+\left(n-1\right)d$

we have been given a7 that means 7th term is 3

so plug n=7, d=-2 and a_n=3 into above formula

$3=a+\left(7-1\right)(-2)$

$3=a+6(-2)$

$3=a-12$

$15=a$

Hence final answer is c. 15

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3 years ago

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Which shows the quotient of g and 7?

egoroff_w [7]

The answer is d because quotient means the outcome of a division between two numbers. So therefore it has to be a division equation, which is d.

4 0

2 years ago

M thanks for th help

tangare [24]

Step-by-step explanation:

here's the answer to your question

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2 years ago

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