Answer:
<em>Answer: A'Reana's weekly allowance is $100</em>
Step-by-step explanation:
<u>Backward Solution</u>
To solve some problems, we can work backward, using the inverse operations, to arrive at the solution.
The problem explains a sequence of expenses A'Reana does with her weekly allowance. In the end, she had $37.50.
That final balance came when she last spent $7.50 on a pizza. Thus, before that, she had $37.50+$7.50=$45
This balance is half of her previously remaining money. The other half was spent on a new shirt. Thus she had 2*$45=$90.
Those $90 were left after she gave $10 to her friend Taylor, thus, the initial money was $90+$10 = $100
Answer: A'Reana's weekly allowance is $100
8x - 88 = 2x - 34
6x = 54
x = 9
Hi there! Hopefully this helps!
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<h2>Answer:
</h2><h2 /><h2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</h2>
When you multiply two negatives (-, -,), you are gonna get a positive(+)
<em>[Like making a cross out of two lines].</em>
<h2>Since 3(7) normally <u>
equals 21</u>, that would be the answer for this case.</h2>
Answer:
<em>y = 4x - 57 </em>
Step-by-step explanation:
( 
, 
)
( 
, 
)
m = 
y - = m ( x - )
~~~~~~~~~~~~~~~
( 15 , 3 )
( 19 , 19 )
m = 
= 4
y - 3 = 4 ( x - 15 )
<em>y = 4x - 57</em>
For this case we have the following equations:
2x - 3y = 1
2x + 3y = 2
When adding both equations we observe that:
Sentence 1: we have an equation of a variable, which in this case will be x. We can clear the value of x.
Sentence 2: Knowing the value of x, we can substitute in any equation and find the value of y.
Sentence 3: The value of x and y represents the point of intersection of both lines (x, y).
