Answer:
x = -9
Step-by-step explanation:
- Add 12 to each side, so it now looks like this: -3x = 27
- Divide each side by -3x, so it now looks like this: x = -9
I hope this helps!
Answer:
y < -3x + 4
Step-by-step explanation:
From the graph, we can see that the intercept on the y axis is 4 while the intercept on the x-axis is approximately 1.33 or simply 4/3.
This means, at x = 0, y = 4 and at y = 0, x = 4/3.
Therefore the linear equation is;
y = -3x + 4
However, the shaded area is below the line and so the operation will be with the sign less than(<). Also, we see that the line is broken and this means that the line doesn't include equal to "=" sign.
Thus, the correct inequality is;
y < -3x + 4
Step-by-step explanation:
| v − 455 | < 23
Writing this without absolute values:
-23 < v − 455 < 23
Solving for v:
432 < v < 478
In interval notation: (432, 478)
This interval is within the range of blue wavelengths, so the fireworks will be blue.
<u>Corrected Question</u>
In the year 2009, the cost of a flat screen television can be modeled by the equation C = -10t^2 + 500 where t is the number of years since 2009. Factor this cost polynomial.
Answer:
Using express exponents, you write C=10(50-t^2)
Step-by-step explanation:
To factor the cost polynomial, 
, we follow these steps.
Step 1: Determine the greatest common divisor of the terms in the polynomial
The terms in the polynomial are 
The greatest common divisor of is 10.
Step 2: Factor the polynomial by dividing each of the terms with the greatest common divisor obtained above.
