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2 years ago

There are a total of 12 bicycles and tricycles in a parking lot. If there are 31 wheels in all, how many of them are bicycles?

Mathematics

1 answer:

leva [86]2 years ago

6 0

Answer:

5 bicycles

Step-by-step explanation:

5 * 2 = 10 wheels

7 * 3 = 21 wheels

10 + 21 = 31

Hope this helped! Brainliest :)

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Write the first four terms of the sequence defined by An=20-30(n-1)

monitta

The first four terms of sequence is 20, -10, -40, -70

Solution:

Given that we have to find the first four terms of sequence

Given recursive formula is:

$a_n = 20 - 30(n-1)$

To find the first term, substitute n = 1

$a_1 = 20-30(1-1)\\\\a_1 = 20-30(0)\\\\a_1 = 20$

Thus the first term of sequence is 20

To find the second term, substitute n = 2

$a_2 = 20-30(2-1)\\\\a_2 = 20-30(1)\\\\a_2 = 20-30\\\\a_2 = -10$

Thus the second term of sequence is -10

To find the third term, substitute n = 3

$a_3 = 20-30(3-1)\\\\a_3 = 20-30(2)\\\\a_3 = 20-60\\\\a_3 = -40$

Thus the third term of sequence is -40

To find the fourth term, substitute n = 4

$a_4 = 20-30(4-1)\\\\a_4 = 20-30(3)\\\\a_4 = 20-90\\\\a_4 = -70$

Thus the first four terms of sequence is 20, -10, -40, -70

3 0

3 years ago

Solve |3x - 4| = 6 A. {-10/3, 10/3} B. {-2/3, 10/3} C. {-2/3, 2/3}

ratelena [41]

B. {-2/3, 10/3}
|3x-4|=6
3x=10
X=10/3

-3x=2
X=-2/3

5 0

3 years ago

What is the least common multiple you could use to find 4/5 + 5/6?

damaskus [11]

Tbh idk ask your teacher

4 0

3 years ago

Please help me asap!!!

Anastasy [175]

Answer:

C) 75

Step-by-step explanation:

I got this because what you have to do, they all have to add up to 180. so what you do is:

2x + 30 = 180

-30 -30

2x = 150

2x/2 = 150/2

x = 75

6 0

3 years ago

Identify the coefficient in the expression 12a+6

miv72 [106K]

Answer:

Step-by-step explanation:

12 is the number before multiplying another quantity

8 0

3 years ago