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Zielflug [23.3K]
3 years ago
14

9 pencils cost $7.74.Which equation would help determine the cost of 6 pencils?

Mathematics
2 answers:
Dima020 [189]3 years ago
8 0

Answer:

The equation is x= (7.74 /9) 6  

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

If 9 pencils cost $7.74, we have to divide the total cost ($7.74) by the number of pencils (9) to obtain the price of 1 pencil.

Now that we have the price of 1 pencil, to obtain the cost of 6 of them we simply multiply the result by six.

Mathematically speaking:

x= (7.74 /9) 6  

Where:

x = Cost of 6 pencils in $

Solving:

x = 0.86 x 6 = $5.16

exis [7]3 years ago
4 0

Answer:

Y=7.74/9×(6)

Step-by-step explanation:

Here,we have the price of 9 pencils which costs $7.74 and to get the price of each one, we decide the total price by the number of pencils bought.

Therefore, $7.74/9(price of each pencil)

And then the price of 6 pencils will be: X= $7.74/9×(6)

Note that x is the price of each pencil.

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Is -5 a solution to the equation 6x +5 = 5x + 8 + 2x? Explain.
MrRa [10]

Answer:

No -5 is not the solution, But x =-3 is the solution.

Step-by-step explanation:

Given:

6x+5= 5x+8+2x

We need to find the solution for above equation we get;

Solution:

Now when we put the value of x =-5 we get

6x+5 =5x+8+2x\\\\6\times-5+5 = 5\times-5+8+2\times-5\\\\-30+5 = -25+8-10\\\\-25\neq -27

hence -5 is not the Solution for given equation.

On Solving the above equation we get;

6x+5 =7x+8

Now Combining the like terms we get;

7x-6x =5-8

Now Using Subtraction property we get;

x = -3

Hence The solution to equation is -3.

6 0
3 years ago
The daily profit, P, of a local bakery can be calculated using the formula P=m-(250+4h) when employees work a total of h hours a
qwelly [4]

Answer:

m=665+4h

Step-by-step explanation:

Profits of the local bakery is given by

P=m-(250+4h)

where

m = Amount of money to be received

P = Profit

h = Number of hours worked

Now P = $415

So,

P+(250+4h)=m\\\Rightarrow m=P+250+4h\\\Rightarrow m=415+250+4h\\\Rightarrow m=665+4h

The equation to calculate the amount of money, m, the bakery should receive if the desired profit is $415 is m=665+4h.

5 0
3 years ago
Drag each description to the model and equation it matches.
Vinvika [58]

Tell me if it is right

4 0
3 years ago
Plz help with my Algebra 1 hw
larisa [96]

C) 72.5

D) it is a acute triangle

one sentence explination) it is a acute triangle because d is not above 90 degrees. that and none of the angles are right triangles therefore eliminating the possibility of it being a right triangle

I hope this helps

8 0
3 years ago
The difference of a number and 6 is the same as 5 times the sum of the number and 2. What is the number?
bulgar [2K]

Answer:

A

Step-by-step explanation:

let the number be x, then

the difference of x and 6 is x - 6 and

5 times the sum of x and 2 is 5(x + 2)

Equate both expressions

5(x + 2) = x - 6 ← distribute left side

5x + 10 = x - 6 ( subtract x from both sides )

4x + 10 = - 6 ( subtract 10 from both sides )

4x = - 16 ( divide both sides by 4 )

x = - 4 → A

4 0
3 years ago
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