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Pachacha [2.7K]
3 years ago
7

Anthony is saving money to buy $240 MP3 player. Anthony starts off with $50 in his bank account and add $20 each week. State the

algebraic rule for Anthony. Let X stand for the week number, and let y represent the total dollars saved.
Mathematics
1 answer:
Mazyrski [523]3 years ago
5 0

Answer:

240 = 50 + 20x

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Can someone please help me with question 42?
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3 years ago
What are the solutions of the quadratic equation 0 = 4(x - 3)2 - 16?
erastovalidia [21]

Answer:

 x = 5, x = 1

Step-by-step explanation:

The quadratic equation 0 = 4(x - 3)2 - 16.

Using binomial theorem, (a - b)2 = a2 - 2ab + b2 to expand (x - 3)2.

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Using distributive property to multiply 4 by x2 - 6x + 9.

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a + b = -6, ab = 1(5) = 5.

a = -5, b = -1.

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x(x - 5) - (x - 5)

Factor out common term

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2 years ago
Rashau made a rectangular frame for her latest oil painting. The length is 28 centimeters more than triple the width. The perime
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The length is about 28 more than three times the width. Denoted as (a) width, and as (b) the length. Then move on to lay the system of equations, as done below:

\begin{cases}2a+2b=136\\b=3a+28\end{cases}
\begin{cases}2a+2b=136|:2\\b=3a+28\end{cases}
\begin{cases}a+b=68\\b=3a+28\end{cases}
\begin{cases}a+3a+28=68\\b=3a+28\end{cases}
\begin{cases}4a=40|:4\\b=3a+28\end{cases}
\begin{cases}a=10\\b=3*10+28\end{cases}
\begin{cases}a=10\\b=58\end{cases}

The short side has a length of 10 cm, and 58 cm long.
5 0
3 years ago
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