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Sergio [31]
3 years ago
11

What property is shown in the equation below? 3a*9 c= 27ac?

Mathematics
2 answers:
Ad libitum [116K]3 years ago
8 0

Answer:

Identity property of multiplication

Step-by-step explanation:

Zepler [3.9K]3 years ago
7 0

Answer:

Option B) Commutative property of multiplication

Step-by-step explanation:

We are given the following information in the question:

(3a)\times (9c) = 27ac

We have to find the property of multiplication used in the above expression:

The multiplication is shown below:

(3a)\times (9c) = 27ac\\=(3\times a)\times (9\times c)\\= 3\times (a\times 9)\times c\\= 3\times (9\times a)\times c\\=(3\times 9)\times a\times c\\=27ac

We used the commutative property of multiplication.

Commutative property states that two numbers can be multiplied in any order

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Pls help will give brainliest and 5star plss help
Ugo [173]

Answer:

14. 2384 in²

15. 291.8 in²

Step-by-step explanation:

14. The total surface area consists of the area of two equal triangles and three rectangles.

The area of each triangle is \frac{1}{2} bh, which is \frac{1}{2}(24)(14)=168 in². The area of both triangles combined is 336 in².

The area of each of the slanted rectangles is base x height, which is 25x32=800 in². The area of both rectangles combined is 1600 in².

The area of the base rectangle is 14x32=448 in².

Therefore, to find the total surface area, you add the area of each side together: 336+1600+448=2384 in².

15. The equation for the surface area of a cylinder is 2\pi r^{2} +2\pi rh.

The radius (r) is 4.6 in and the height (h) is 9.1 in.

Therefore, the surface area is:

2\pi (4.6)+2\pi (4.6)(9.1)=28.888+262.88=291.8\\ in²

5 0
2 years ago
What is the value of n? n–2= 10n+ 4/2 Enter your answer in the box.
pentagon [3]

Answer:

-4 / 9

Step-by-step explanation:


 n - 2 = 10n + 4/2

 n - 10n = 4/2 + 2

 -9n = 4/2 + 4/2 ( taking LCM of 4/2 and 2)

 -9n = 8/2

 -9n = 4

    n = 4 / -9

   

   therefore n = -4 /9 ( since the minus sign doesn't make a difference whether placed at numerator or denominator) .


7 0
3 years ago
Your food bill at a restaurant is $30. You leave a 20% tip. The sales tax is 6%. What is the total cost of the meal?
ohaa [14]
The total cost of the meal is $37.80

Given:
Food bill = $30
tip = 20%
sales tax = 6%

Tip and sales tax must be based on the food bill.

Tip = $30 x 20% = $6
Sales Tax = $30 x 6% = $1.80

Food bill :   30.00
Tip               6.00
Sales tax  <u>   1.80</u>
Total cost 37.80


7 0
3 years ago
Read 2 more answers
8. Use the data below to answer the following question. Population 60 million Number in the labor force 50 million Number employ
vlabodo [156]

Answer:

4%

Step-by-step explanation:

The unemployment rate is calculated by dividing the number of unemployed(2 million) by the labor force (50million) and multiplying the result by 100.

Labor force is the total number of unemployed and employed persons in a country. In this case, we have:

Labor force= No. of unemployed (in million) + No. of full time employed (in million) + No. of part time employed (in million) = 2 + 38 + 10 = 50 million

Unemployment rate= 2/50 × 100 = 4%

Therefore, the rate of unemployment is 4%.

7 0
3 years ago
Pls help and show work I will mark brainliest if correct no spam or else I will report
postnew [5]
Which question? 2 or 3.
5 0
2 years ago
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