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ahrayia [7]
3 years ago
9

Keiko is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x rep

resent the number of weeks Keiko has been adding money. Suppose that x and y are related by the equation =20x+550=y .
* Note that a change can be an increase or a decrease. For an increase, use a positive number. For a decrease, use a negative number.


What was the starting amount of money in the account?

What is the change per week in the amount of money in the account?
Mathematics
1 answer:
Kamila [148]3 years ago
7 0

the starting amount would be the 550, because it doesn't have a variable assigned to it.

 change per week is 20 since it is being multiplied by the number of weeks

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What is the solution for the equation -15=5(3y-10)-5y
marissa [1.9K]

Answer:

  • \Large\boxed{\sf{y=\dfrac{7}{2} }}

Step-by-step explanation:

Isolate the variable of y from one side of the equation.

-14=5(3y-10)-5y

<u>First, switch sides.</u>

\sf{5\left(3y-10\right)-5y=-15}

Use the distributive property.

<u>DISTRIBUTIVE PROPERTY:</u>

A(B-C)=AB-AC

5(3y-10)

Multiply by expand.

5*3y=15y

5*10=50

15y-50-5y

15y-5=10y

= 10y-50

10y-50=-15

Add by 50 from both sides.

10y-50+50=-15+50

Solve.

10y=35

Then, you divide by 10 from both sides.

10y/10=35/10

Solve.

Divide the numbers from left to right.

35/10=7/2

y=7/2

Divide is another option.

7/2=3.5

\Longrightarrow: \boxed{\sf{y=\dfrac{7}{2}}}

  • <u>Therefore, the correct answer is y=7/2.</u>

I hope this helps. Let me know if you have any questions.

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nikklg [1K]

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HELP ASAP <br> What is the slope of the line on the graph?
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2 Point:     (6,2)         (-6,6)
                   x₁ y₁         x₂ y₂
       

Remember: 
  
    rise          change in y          y₂ - y₁          6 - 2            4
 ---------- =  ------------------- = ------------- = ----------- = ----------
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Simplify 4/-12

     4 ÷ 4             1
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The slope of the line is -1/3.






3 0
3 years ago
1/y = -3x/2+ 3 and rewrite it in the form of y = p/ q+x
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1/y = -3x /2 + 3

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