Mercedes created color panels for a wall using a mix of only green and yellow paints. She plotted the quantities of green and ye
2 answers:
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Answer:
The number of lower-priced speaker sold was 28
Step-by-step explanation:
<u><em>The complete question is</em></u>
An online store sells two types of speaker. The higher-priced speaker sells for $170 and the lower-priced speaker sells for $90. Last week the store sold four times as many lower-priced speaker as higher-priced speaker. Combined sales totaled $3,710. How many lower-priced speaker did it sell?
Let
x ----> the number of higher-priced speaker sold
y ----> the number of lower-priced speaker sold
we know that
Last week the store sold four times as many lower-priced speaker as higher-priced speaker
so
----> equation A
Combined sales totaled $3,710
so
----> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
Using a graphing tool
The solution is the point (7,28)
see the attached figure
therefore
The number of lower-priced speaker sold was 28 and the number of higher-priced speaker sold was 7
For this question, it is reasonable to use the foil method. In order to use FOIL we need to understand what it stands for:
F-First
O-Outside
I-Inside
L-Last
(see attachment for visual)
Let's get started.
We are given:
Start by distributing the 2 first, then the 3, and then lastly the -6
<span><span><span><span><span><span><span>(<span>2x^2</span>)</span>(x)</span>+<span><span>(<span>2x^2</span>)</span><span>(−1)</span></span></span>+<span><span>(3x)</span>(x)</span></span>+<span><span>(3x)</span><span>(−1)</span></span></span>+<span><span>(−6)</span>(x)</span></span>+<span><span>(−6)</span><span>(−1)
From here multiply the terms you have gathered from FOILING:
</span></span></span>
From here we combine like terms. Like terms are terms that contain the same variable and/or exponential value. For example:
3c and 4c are like terms because they have the same variables
24 and 50 are like terms because they are simply numbers without any variables.
It is best to put the like terms together in parentheses so that it is easier to combine them.
Combine:
Final answer:
If you have an further questions, please do not hesitate to comment below! Have a nice day! :)
F-First
O-Outside
I-Inside
L-Last
(see attachment for visual)
Let's get started.
We are given:
Start by distributing the 2 first, then the 3, and then lastly the -6
<span><span><span><span><span><span><span>(<span>2x^2</span>)</span>(x)</span>+<span><span>(<span>2x^2</span>)</span><span>(−1)</span></span></span>+<span><span>(3x)</span>(x)</span></span>+<span><span>(3x)</span><span>(−1)</span></span></span>+<span><span>(−6)</span>(x)</span></span>+<span><span>(−6)</span><span>(−1)
From here multiply the terms you have gathered from FOILING:
</span></span></span>
From here we combine like terms. Like terms are terms that contain the same variable and/or exponential value. For example:
3c and 4c are like terms because they have the same variables
24 and 50 are like terms because they are simply numbers without any variables.
It is best to put the like terms together in parentheses so that it is easier to combine them.
Combine:
Final answer:
If you have an further questions, please do not hesitate to comment below! Have a nice day! :)