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3 years ago

What is the correct verbal expression for the mathematical expression 3n+12?

Mathematics

1 answer:

storchak [24]3 years ago

8 0

The answer is a. two more than three times a number

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Earth revolves around the Sun in 365 days, but the planet Mercury does so in only 88 days. Compared to Earth, how many more comp

Elena L [17]

Answer:

In a 1000 days Mercury will make 8.624 more revolutions than Earth!

Step-by-step explanation:

<u>Earth</u> takes 365 days to make a complete revolution.

we can say that the rotational speed of Earth is $\dfrac{1}{365}\frac{\text{rev}}{\text{day}}$

so, in a 1000 days how many revolutions will Earth have made?

$\dfrac{1}{365}\frac{\text{rev}}{\text{day}}\times(1000\,\text{day})$

see that the 'day's cancel out. Simply multiply the two numbers!

$2.739\text{rev}$

<u>Next, do the same for Mercury</u>

we can say that the rotational speed of Mercury is $\dfrac{1}{88}\frac{\text{rev}}{\text{day}}$

as it completes 1 revolution in 88 days.

so, in a 1000 days how many revolutions will Mercury have made?

$\dfrac{1}{88}\frac{\text{rev}}{\text{day}}\times(1000\,\text{day})$

multiplying by 1/88 by 1000 yields:

$11.363\text{rev}$

The Question is how many MORE complete revolutions will Mercury make in 1000 days?

We need to subtract the revolutions of Mercury with Earth to find how far ahead is Mercury from Earth

$11.363\text{rev} - 2.739\text{rev}$

$8.624\text{rev}$

In a 1000 days Mercury will make 8.624 more revolutions than Earth!

5 0

3 years ago

Draw a quadratic function below with zeros at -3 and 5 that is also concave up.

tia_tia [17]

Hello from MrBillDoesMath!

Answer:

x^2 - 2 x - 15

Discussion:

( x - (-3)) * ( x- 5) =

(x +3) (x-5) =

x^2 - 2 x - 15

It is a concave upward curve (looks like a "u") as the x^2 term causes the function to grow larger as x approaches +\- infinity.

Thank you,

MrB

8 0

4 years ago

Trent kept track of his leaf-raking business as shown. What was his profit?

Vesnalui [34]

Answer:

506 $

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

You are offered a job that pays $43 comma 000 during the first year, with an annual increase of 5% per year beginning in the

sveta [45]

49,778 would be earned on the 4th year

4 0

3 years ago

What's the answer? 3-6+9-12+15-18+...+297-300

Vlad1618 [11]

Um well are u just adding and doing subtraction if so I think the answer is 12 idk I used calculator also I would need to know the answer choices I really don’t know if I’m right so don’t come at me

3 0

3 years ago