Answer:
Dependent


Step-by-step explanation:
We are given that system of equations
(Equation I)
( Equation II)
(Equation III)
Equation III multiply by 3 and then add to equation I then we get

Divided by -7 then we get
Now , obtained equation subtract from equation II then we get
0=0
Hence, equation II is a linear combination of equation I and equation III.
Therefore, system is dependent because system has infinite solutions.

Substitute the value of x in equation I then we get




Answer:
yes you are right
Step-by-step explanation:
Answer:
-18
Step-by-step explanation:
4bc-b
Let b = -3 and c=2
4 * (-3)* 2 - (-3)
-24 +6
-18
<u>Both Parts
</u><u />First, we need to know what the price is 50% off. To find this, we just need to multiply 49.99 by 50%'s decimal value (0.5).
<u>
</u><u />49.99
<u>x .5
</u><u />≈25.00<u>
Part A
</u><u />To find sales tax, we should multiply the number by the percent's decimal value. In this case, it is an 8% sales tax, which has a decimal value of 0.08.
<u>
</u><u />25.00
<u>x0.08
</u><u /><u /> 0002
Using the math above, we can see that the sales tax was $2.00.
<u>Part B
</u><u /><u />To solve for this, we need to add the sales tax back to the original price.
25.00
<u>+2.00</u>
27.00
Using the math above, we can see that the total price for the headphones is $27.00.