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Shalnov [3]
4 years ago
7

which property is illustrated by the following statement? 2(-3/9)=(-3/9)2^? Associative Property of Addition, Commutative Proper

ty of Multiplication, Inverse property of Multiplication, Commutative property of addition
Mathematics
2 answers:
Dafna1 [17]4 years ago
4 0

Answer:

Therefore, Commutative Property of Multiplication,

Step-by-step explanation:

Given : 2(\frac{-3}{9}) = (\frac{-3}{9}) 2.

To find : which property is illustrated by the following statement.

Solution : We have given

2(\frac{-3}{9}) = (\frac{-3}{9}) 2.

Commutative property : Commutative property states that order does not matter. Multiplication  are commutative.

Example : A×B = B×A.

3×4 = 4×3 = 12.

Then  2(\frac{-3}{9}) = (\frac{-3}{9}) 2 is illustrated by the Commutative Property of Multiplication,

Therefore, Commutative Property of Multiplication,

Ratling [72]4 years ago
3 0

Consider the given statement:

2(\frac{-3}{9}) = (\frac{-3}{9})2

We have to identify the property used in this statement.

1. Associative Property of Addition: Let a,b and c be three real numbers. This property states that a+(b+c) = (a+b)+c. This property is not used in the given statement.

2. Commutative property of multiplication: Let 'a' and 'b' be two real numbers. This property states that a \times b = b \times a.

In the given statement,2(\frac{-3}{9}) = (\frac{-3}{9})2

This statement holds commutative property of multiplication as whether 2 is multiplied to \frac{-3}{9} or \frac{-3}{9} is multiplied to 2, the result is same.

So, Commutative property of multiplication is illustrated in this statement.

3. Inverse property of multiplication: A number 'a' is said to have an inverse '\frac{1}{a}' if a \times \frac{1}{a}=1. This property is not used in the given statement.

4. Commutative property of addition: Let 'a' and 'b' be two real numbers. This property states that a+b = b+a. This property is not used in the given statement.

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An opaque cylindrical tank with an open top has a diameter of 3.25 m and is completely filled with water. When the afternoon Sun
kicyunya [14]

Answer:

10.69

Step-by-step explanation:

We must first know that the angle of refraction is given by the following equation:

n_water * sin (A_water) = n_air * sin (A_air)

where n is the refractive index, for water it is 1.33 and for air it is 1.

The angle (A) in the air is 22.8 °, and that of the water is unknown.

Replacing these values we have to:

1.33 * sin (A_water) = 1 * 0.387

sin (A_water) = 1 * 0.387 / 1.33

A_water = arc sin (0.2907) = 16.9 °

now for the tank depth:

h = D / tan (A_water)

D = 3.25

Replacing

h = 3.25 / tan 16.9 °

h = 10.69

Therefore the depth is 10.69 meters.

6 0
3 years ago
Helen got a 7% reduction in the price of a pair jeans that are normally $32. What is the approximate percent in the price?
adoni [48]

A percentage is a way to describe a part of a whole. The approximate percent decrease in the price is 21.87%, thus, the correct option is B.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given the reduction in the price is $7, while the original cost is $32. Therefore, the approximate percent decrease in the price is,

Percentage decrease = 7/32  × 100%

                                     = 21.87%

Hence, the approximate percent decrease in the price is 21.87%, thus, the correct option is B.

The correct question is:

Helen got a $7 reduction in the price of a pair of jeans that are normally $32. What is the approximate percent decrease in the price?

The percent decrease is approximately 15%.

The percent decrease is approximately 21%.

The percent decrease is approximately 43%.

The percent decrease is approximately 78%

Learn more about Percentages:

brainly.com/question/6972121

#SPJ1

7 0
2 years ago
There are four red ,four blue, and two green marbles in a bag .if one marble is chosen at random from the bag what is the probab
mina [271]

Answer:

There is a 20% probablity that the marble will be green :)

Step-by-step explanation:

  • There are a total of 10 marbles in the bag. 4 red+4 blue+ 2green=10
  • There are two green marbles out of the 10 marbles.  2/10
  • 2 divided by 10 is .20 or 20%
  • Therefore, there is a 20% probability that the marble will be green.
7 0
3 years ago
Can someone help me with the question in the image please. if correct i will mark as brainliest
matrenka [14]

Answer:

I believe it is a=64; b=2 divided by 10 (I'm sorry if it's wrong I hope you pass)

5 0
3 years ago
Read 2 more answers
Make x the subject of the formula<br> Y=3x+2
andrew-mc [135]

Answer:

(y-2)÷3=x

Step-by-step explanation:

y=3x+2

y-2=3x

(y-2)÷3=x

This answer could also be written as a fraction: y-2 over 3, equals x.

5 0
3 years ago
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