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nexus9112 [7]
2 years ago
11

What is the first step in solving this system of equations by Substitution?

Mathematics
1 answer:
pickupchik [31]2 years ago
6 0

Answer:

x=x+2

Step-by-step explanation:

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A book store sells a textbook for $150. If the textbook is on sale with 12% off, and there is a sales tax of 8.25% added to the
Yuri [45]

The textbook is $150 originally, so to find the price of the textbook on sale, multiply the original price by 12% (0.12). Then subtract 12% of 150 from 150.

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Multiply the price of the textbook on sale by the sales tax of 8.25% (0.0825). Then add the tax price onto the sale price of the textbook.

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Add 10.89 to 132.

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The final price of the textbook is $142.89.

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3 years ago
Find three solutions to the equation 2x+3y=12
aleksley [76]

Answer:

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2 years ago
Find all solutions to the equation in the interval [0, 2pi). COS X = sin 2x​
Lera25 [3.4K]

Answer:

Step-by-step explanation:

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cos x(2 sin x-1)=0

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2 sin x-1=0

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2 years ago
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Ket [755]
If we are to write this equation in slope-intercept form, it will be in y = mx + b, where m is the slope of the line and b is the y intercept.  We need then to find the slope of the line using 2 points on the line and filling in the slope formula to find the slope.  One of the points we can use is (0, 3) which is also the y intercept.  The y-intercept is found where x = 0.  Where x = 0, y = 3.  So b = 3.  Now for the slope we will use (0,3) and (4,4):  m= \frac{4-3}{4-0} = \frac{1}{4}.  Using that m value and that b value we have the equation y= \frac{1}{4}x+3.  There you go!
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3 years ago
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kondaur [170]

Answer:

3/5

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