Δ = (8i)^2 - 4*(-25) => Δ = -36 +100 => Δ = 64 => x1 =(-8i + 8)/2 => x1 = -4i +4;
x2 = (-8i - 8)/2 => x2 = -4i-4; in this case, your solutions are complex conjugates.
Answer:
12
Step-by-step explanation:
f(-7) = 5-(-7)=5+7=12
Answer: The amount of Karen's bill = $ 60
Step-by-step explanation:
Given : The expression 10+0.25m can be used to determine the amount o, where <em>m =</em> The number of minutes she talks.
If she talks for 200 minutes in one month, then put m= 200 in the above expression we will get the amount of Karen's bill = 10+0.25(200)
= 10+ 50
= 60
Hence, the amount of Karen's bill = $ 60
Answer:
$72
Step-by-step explanation:
Let's use substitution to identify the cost of 24 notebooks.
<u>The equation is represented as:</u>
<u>Substitute 24 </u><u>into</u><u> </u><u>x</u><u>:</u>
<u>
</u>
<u>Solve</u><u>:</u>
<span>38.4376908577 i know because i know
</span>
