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4 years ago

PLEASE PLEASE HELP the question is below

Mathematics

1 answer:

kiruha [24]4 years ago

6 0

Answer:

D. 66/2

Step-by-step explanation:

If you are trying to figure out what operation to perform first, then follow PEMDAS.

P: Parenthesis

E: Exponents

M: Multiplication

D: Division

A: Addition

S: Subtraction

So first we start with what is in parenthesis. Since there are two operations within the parenthesis, we start with the division first since it comes first in PEMDAS. This is why D. 66/2 is our best answer.

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Round 18.159 to the nearest tenth

Mandarinka [93]

Answer:

18.2

Step-by-step explanation:

A tenth is the first decimal, on the right of your unit. 5 to the sky (round up) 4 to the floor (round down)

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2 years ago

The mean of a sequence of n numbers is m. If we split the sequence into two sequences of lengths n1 and n2 and compute their mea

Furkat [3]

The mean of a sequence of numbers is the average.

The true statement is: $\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

The given parameters are:

$\mathbf{Mean = m}$

$\mathbf{Size = n}$

The mean of a dataset is calculated as:

$\mathbf{Mean = \frac{\sum x}{Size}}$

So, we have:

$\mathbf{m = \frac{\sum x}{n}}$

Multiply both sides by m

$\mathbf{\sum x = mn}$

When the sequence is split into two, we have:

$\mathbf{\sum x_1 = m_1\times n_1}$

$\mathbf{\sum x_2 = m_2\times n_2}$

Where:

$\mathbf{\sum x_ = \sum x_1 + \sum x_2}$

So, we have:

$\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

Hence, the true statement is: $\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

Read more about mean and averages at:

brainly.com/question/16217700

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3 years ago

If Damian is able to read 80 pages in 2 hours how long does it take for him to reach each page

Stella [2.4K]

Answer:

Step-by-step explanation:

If he reads 80 pages in 2 hours, that means he reads 80 pages in 120 minutes. 80 pages/120 minutes simplifies to 2 pages/3 minutes. It also means it takes him 1 and a half minutes to read each page.

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3 years ago

Carlos and his family left for the amusement park at 8:35 Ask Your Teacher The trip took 1 hour 55 minutes. What time did they a

My name is Ann [436]

Answer:Carlos and his family arrived at 10:30

Step-by-step explanation:

The time Carlos and his family left for the amusement park =8:35

Since The trip took 1 hour 55 minutes., we have to add it to the time they left for the amusement park to now the time they arrived

8: 35 =8 hrs 35minutes

1 hr 55 minutes

90 minutes

but 90minues is greater than 60 so we convert to hours and minutres by dividing by 60 giving us