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2 years ago

What is the next number in the sequence? 3, 9, 15, 21, ?

Mathematics

2 answers:

m_a_m_a [10]2 years ago

6 0

Answer:

Your next number would be 27

Step-by-step explanation:

3+6=9

9+6=15

15+6=21

21+6=27

Nonamiya [84]2 years ago

4 0

Answer: 27

Step-by-step explanation:

supposed to ad 6 everytime

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Expand and simply <br>a) 2(4c+5d)+3(c-3d) <br>b) 6(3m+n)-4(m-n)<br>

dezoksy [38]

Answer:

a. 11x + d

b. 15m + 10n

Step-by-step explanation:

a. 2(4c+5d) + 3(x-3d)

Break the brackets:

2*4c + 2*5d + 3*x - 3*3d

= 8x + 10d + 3x - 9d

Collect like termsL

= 8x + 3x + 10d - 9d

= 11x + 1d

b. 6(3m+n) - 4(m-n)

Break the brackets:

= 6*3m + 6*n - 3*m - 4*(-n)

= 18m + 6n - 3m - (-4n)

= 18m -3m + 6n + 4n

= 15m + 10n

Hope this helped :3

3 0

3 years ago

Please help me solve this!!

Mice21 [21]

Answer:

Abelito had the greater average speed

Step-by-step explanation:

Given

Bobby:

$Distance =4\ miles$

$Time = 30\ minutes$

Abelito

$Distance = 10\ miles$

$Time = 48\ minutes$

Required:

Who had a greater average speed

Average speed (S) is calculated as:

$S = \frac{Distance}{Time}$

We will make use of mph (miles per hour) as the unit of speed.

For Bobby:

$S_B = \frac{4\ miles}{30\ minutes}$

Convert minute to hour

$S_B = \frac{4\ miles}{0.5\ hr}$

$S_B = 8mph$

For Abelito

$S_A = \frac{10\ miles}{48\ minutes}$

Convert minute to hour

$S_A = \frac{10\ miles}{0.8\ hr}$

$S_A = 12.5mph$

By comparison: 12.5mph > 8mph

Hence: Abelito had the greater average speed

5 0

2 years ago

The metric system is only used in france. please select the best answer from the choices provided t f

faltersainse [42]

FALSE
metric system is known as the SI or sytem international system
it is used everywhere except for those few who cling to the english system (USA and UK)

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2 years ago

What is the 7.5% of 48000

dimaraw [331]

48000 * 0.075 = 3600

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3 years ago

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