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Alex Ar [27]
3 years ago
15

Which of the following demonstrates the Distributive Property? 4(2a + 3) = 8a + 3 4(2a + 3) = 2a + 12 4(2a + 3) = 6a + 7 4(2a +

3) = 8a + 12
Mathematics
2 answers:
Alona [7]3 years ago
4 0
The answer is 8a + 12 

here's my work

4(2a + 3) 

4 times 2a is 8a 

then 4 times 3 is 12 
marusya05 [52]3 years ago
4 0

Answer:

 4(2a + 3)  = 8a + 12 .

Step-by-step explanation:

Given  :  4(2a + 3) .

To find : Which of the following demonstrates the Distributive Property.

Solution : We have given  4(2a + 3) .

Distributive property : x( y+ z) = x * y +  x * z.

Then

4(2a + 3)  = 4 * 2a + 4 * 3.

4(2a + 3)  = 8a + 12 .

Therefore,  4(2a + 3)  = 8a + 12 .

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A rectangle has a length 5 meters more than five times the
k0ka [10]

Given:

A rectangle has a length 5 meters more than five times the  width.

The area of the rectangle is less than 100 meters  squared.

To find:

The expression or inequality that represents all possible  widths of the rectangle.

Solution:

Let x be the width of the rectangle.

Length of the rectangle is 5 meters more than five times the  width.

length=5x+5

Area of rectangle is

Area=length \times width

Area=(5x+5) \times x

Area=5x^2+5x

The area of the rectangle is less than 100 meters  squared.

5x^2+5x

5x^2+5x-100

Divide both sides by 5.

x^2+x-20

x^2+5x-4x-20

x(x+5)-4(x+5)

(x+5)(x-4)

It is true if one factor is negative and other is positive. So,

x-4     ...(i)

x+5>0\Rightarrow x>-5       ...(ii)

Using (i) and (ii), we get

-5

Therefore, the required expression or inequality for possible

widths of the rectangle is -5.

4 0
3 years ago
a) Students returning to a secondary school have to pass through a check point at the rate of 50 per though. The average time fo
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Answer:

175

Step-by-step explanation:

Average queue length = (arrival rate * service time) / (1 - arrival rate * service time)

For the given problem, the average queue length is:

Average queue length = (50 * 35) / (1 - 50 * 35)

= 175

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2 years ago
Jenny wants to serve fruit punch at her party. She plans to buy a punch bowl that costs 5$ and fruit punch that costs 1.40$ per
krek1111 [17]
The answer is Y=1.40p+5
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3 years ago
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First calculate the price of one pound of apples
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= $4.80
Then multiply it by 6
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3 years ago
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Answer:

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Step-by-step explanation:

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