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4 years ago

What is the answer to (-8x)÷(-2)

Mathematics

1 answer:

pav-90 [236]4 years ago

3 0

(-8x) ÷ (-2)
= (-4x) ÷ (-1)
= 4x ÷ 1 = 4x

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The population of a small town is modeled by the

Alborosie

20000=1650e^(.5t)
12.121212=e^(.5t)
Ln(12.121212) = ln(e^(.5t))
2.49495 = .5t
4.98 = t
Rounding it will take approximately 5 years for the pop. to reach 20,000

4 0

3 years ago

Please help me with this problem? Thanks :)

Alexandra [31]

What does this mean I don't understand sorry I can't help!

3 0

4 years ago

a roller coaster train with 6 passenger cars and the front decoration has a mass of 3500 kg. when the train has the front decora

irinina [24]

Answer: The mass of each passenger is 550 kg.

The mass of front decoration = 200 Kg.

Step-by-step explanation:

Let the mass of each passenger be 'x'.

Let the mass of front decoration be 'y'.

So, Number of passenger = 6

Mass of 6 passengers and front decoration = 3500 kg.

Number of passengers = 4

Mass of 4 passengers and front decoration = 2400 kg.

According to question, it becomes,

$6x+y=3500\\\\\implies y=3500-6x----------------(1)\\\\4x+y=2400\\\\\implies y=2400-4x---------------(2)$

so, From Eq(1) and Eq(2), we have,

$3500-6x=y=2400-4x\\\\3500-6x=2400-4x\\\\3500-2400=-4x+6x\\\\1100=2x\\\\x=\frac{1100}{2}=550$

Hence, the mass of each passenger is 550 kg.

The mass of front decoration = 3500-550(6)=200 Kg.

6 0

3 years ago

How to convert 2 and 4/5 into an improper fraction

zvonat [6]

Answer:

Step-by-step explanation:

2 = 4/2 . 4/5 can not be a improper fraction

4 0

3 years ago

What’s is the sum of the series?

STALIN [3.7K]

Answer:

Step-by-step explanation:

$\sum\limits_{k=1}^4(2k^2-4)\to a_k=2k^2-4\\\\for\ k=1:\\\\a_1=2(1)^2-4=2(1)-4=2-4=-2\\\\for\ k=2:\\\\a_2=2(2)^2-4=2(4)-4=8-4=4\\\\for\ k=3:\\\\a_3=2(3)^2-4=2(9)-4=18-4=14\\\\for\ k=4:\\\\a_4=2(4)^2-4=2(16)-4=32-4=28\\\\\sum\limits_{k=1}^4(2k^2-4)=-2+4+14+28=44$

7 0

3 years ago