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OlgaM077 [116]
3 years ago
10

How much is this? (1/2α+1/3)²​

Mathematics
1 answer:
zloy xaker [14]3 years ago
8 0

Answer: 1/(4a^2) + 1/(3a) + 1/9

Step-by-step explanation:

= (1/2a + 1/3)(1/2a + 1/3)

= 1/(4a^2) + 1/(6a) + 1/(6a) + 1/9

= 1/(4a^2) + 2/(6a) + 1/9

= 1/(4a^2) + 1/(3a) + 1/9

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compare the method of using expanded form and the method of using place value to multiply a decimal and a whole number
Zigmanuir [339]
Unfortunately, multiplying and dividing decimals this effect does not occur. In some cases, the decimal number even complicates the operatsii.Dlya beginning, we introduce a new definition. We will meet him very often, and not only in this part of uroke.Znachaschaya - is all that is between the first and the last non-zero digit, including the ends. It's only about numbers, the decimal point is not uchityvaetsya.Tsifry included in the meaningful part of the number, are called significant figures. They may be repeated or even be zero.
3 0
3 years ago
For 30 persons or fewer $10 per person. For every additional person $9 per person.Irene paid the company $390 for her department
marysya [2.9K]

Answer:

She catered for 40 people.

Step-by-step explanation:

According to the information given, you can write an equation that indicates that 30 people multiply for its cost that is $10 plus the number of people after 30 for its cost that is $9 is equal to $390. According to this, the equation is:

10(30)+9x= 390, where

x= number of people after 30

Then, you can solve for x:

300+9x= 390

9x=390-300

9x= 90

x=90/9

x=10

The answer is that she catered for 40 people, 30 people at a cost of $10 and 10 people for a cost of $9.

6 0
3 years ago
Which expression represents how many years are in x months?
Lisa [10]

Answer:

Option C, x/12

Step-by-step explanation:

<u>Step 1:  Convert words into an expression</u>

Which expression represents how many years are in x months?

x/12

<em>Because this will give us the amount of months over 12 which gives us the amount of years.</em>

<em />

<u>Example:  Find out how many years are in 30 months</u>

x/12

30/12

<em>2.5 years</em>

<em />

Answer:  Option C, x/12

5 0
4 years ago
Suppose that $x,y,z$ are positive integers satisfying $x \le y \le z$, and such that the product of all three numbers is twice t
valina [46]

The possible values of z is an illustration of the sum operator

The sum of all possible values of z is 17

<h3>How to determine the possible sum of z?</h3>

The conditions in the question are:

x <= y <= z

xyz = 2(x + y + z)

Using the trial by error method, the possible values of x, y and z are:

  1. x = 1 , y = 3 , z = 8
  2. x = 1 , y = 4 , z = 5
  3. x = 2 , y = 2 , z = 4

The sum of the z values are:

z = 8 + 5 + 4

Evaluate the sum

z = 17

Hence, the sum of all possible values of z is 17

Read more about the sum operator at:

brainly.com/question/2475734

8 0
2 years ago
tina bought some clothes from a high end store that cost 6,719. her friend Betty bought the same quantity of clothes from a low
Agata [3.3K]

Answer:

5437

Step-by-step explanation:

Subtract the original amount 6,719 and 1282

you get 5,437

Hope this helps!

Have a nice day! :D

Mark brainliest if possible pls :)

4 0
3 years ago
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