Which best explains why the expression plus or minus StartRoot b squared minus 4 a c EndRoot cannot be rewritten as b plus or mi
2 answers:
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Answer:
1/4 or 0.25
Step-by-step explanation:
please kindly check the attached files for details
Answer: The measure of the other acute angle is 52.8°
Step-by-step explanation:
Hi, since the situation described forms a right triangle ( see attachment) , we know that the three interior angles of a right triangle add up to 180 degrees.
The value of one angle is given = 37.2°.
Since is a right angle it has also a right angle of 90°.
So we can write an equation:
x + 37.2 + 90 = 180
Where x is the measure of the other acute angle.
Solving for x:
x = 180-90-37.2
x = 52.8°
Answer:
B) Six Months.
Step-by-step explanation:
We can write an equation to model each situtation.
Let <em>m</em> be the number of months and <em>c</em> be its total cost.
Uptown Cable charges $120 for the initial installation fee plus $25 per month. In other words, its total cost is:
Downtown Cable charges an initial $60 fee plus $35 per month. So:
To find after how many months will the two services remain the same, we can set the two equations equal to each other and solve for <em>m</em>. So:
Solve for <em>m: </em>
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The two cable companies will charge the same after six months of use.
Notes:
If the customer uses the service for less than six months, then Downtown Cable is better since its initial cost is lower.
If the customer uses the service for more than six months, then Uptown Cable is better since its rate per month is lower.