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slava [35]
3 years ago
6

Eric’s average income for the first 4 months of the year is $1,450.25, what must be his average income for the remaining 8 month

s so that his average income for the year is $1,780.75?​
Mathematics
1 answer:
netineya [11]3 years ago
6 0
Too harddd sorryyybxnskzmskndjwjnekkks
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Does anyone know the answer to this!?
PolarNik [594]

Answer:

|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|

Step-by-step explanation:

You can use these Cramer's formulas to solve for x and y:

x=\dfrac{|A_x|}{|A|},\\ \\y=\dfrac{|A_y|}{|A|},

where

|A|=\left|\begin{array}{cc}12&-13\\ \\17&-22\end{array}\right|\\ \\ \\|A_x|=\left|\begin{array}{cc}7&-13\\ \\-51&-22\end{array}\right|\\ \\ \\|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|

So,

|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|

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3 years ago
A triangle has a height of 5 and an area of 60. Find the base.
Ilia_Sergeevich [38]

Answer:

24

Step-by-step explanat

6 0
3 years ago
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If Pedro buys 7.5 gallons of gas for 28.49 how much does each gallon of gas cost? I need to know the operation like add subtract
miskamm [114]
Is means equals
sum means to add
product means to multiple
quotient means to divide

this is a division because it is asking for cost per gallon and they give you both the total gallons purchased and the total cost
28.49 divided by 7.5 = 3.798 or 3.80 rounded
You get better at word problems the more you do, just practice
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4 years ago
Need help with 3x + 4x<br><br>will mark branlist​
vazorg [7]

Answer:

That's 7x

Step-by-step explanation:

Since the two have the exponent x then you can just add. <3

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Non-statistical

Step-by-step explanation:

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3 years ago
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