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3 years ago

Simplify square root of 72 by using imaginary number I

Mathematics

1 answer:

Monica [59]3 years ago

7 0

Answer:

$6 \sqrt{2}$

Step-by-step explanation:

$\sqrt{72 } = \sqrt{2 \times 36} \\ = \sqrt{2} \sqrt{36} \\ = 6 \sqrt{2}$

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Help please!!!!!!!!!!!

natita [175]

3x-12 ≥7x+4
Subtract 3x from both sides
-12 ≥4x+4
Subtract 4 from both sides
-16 ≥4x
Divide each side by 4
-4 ≥x
From point 4, you use a closed circle and the arrow is facing towards 0

6 0

3 years ago

I need your help pls

Zielflug [23.3K]

Answer:

1. Let the number is x

a) 8 more than 4 times a number is 28

Required equation:

4x + 8 = 28

b) Example would be:

Four teams of same number of members joined together and the team of eight joined them adding up to 28 people.

Height - h, length - l

h = 1/3l
h = 5 feet, l = ?

----

l = 3h
l = 3*5 = 15 feet

Equation:

6a - 16 = b

Example situation:

6 packs of each containing a number of items. It was reduced by 16 (sold) and b number of items left in the stock.

Note. You need to add your details to the examples.

8 0

2 years ago

In a book the characters are trying to determine whether the Poisson probabilistic model can be used to describe the locations t

oksian1 [2.3K]

Answer:

The estimated mean number of rockets hits in the region is 533.

Step-by-step explanation:

We are given the following information,

Number of rocket hits | Observed number of regions

0 | 228

1 | 214

2 | 94

3 | 32

4 | 7

5 | 0

6 | 0

7 | 1

We are asked to estimate the mean number of rocket hits in the region.

The mean or expected value is given by

$\mu = \sum (x \cdot P(x)) \\\\\mu = (0 \cdot 228) + (1 \cdot 214) + (2 \cdot 94) + (3 \cdot 32) + (4 \cdot 7) + (5 \cdot 0) + (6 \cdot 0) + (7 \cdot 1) \\\\\mu = 0 + 214 +188+ 96 +28 +0+ 0 + 7 \\\\\mu = 533$