Answer:
the answer for the operation that should be used to solve x+7 is -7
<span>the discriminant D of the equation 3g² + 15g + 10 = 0
for a quadratic equation ax²+bx+c=0
the discriminant D is D= b²-4xaxc
so for </span><span> 3g² + 15g + 10 = 0 D=15²- 4x3x10=125-120=5, so D=5</span><span>
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1.) Sales Price - Original Cost / Sales Price * 100 = Percentage Markup
2.) Now substitute the values:
Sales Price - Original Cost / Sales Price * 100 = Percentage Markup
$22.95 - $17.45 / $22.95 * 100 = Percentage Markup
$5.5 / 22.95 * 100 = Percentage Markup
. .2397 * 100 = 23.97%
3.) Therefore, the store uses 23.97% as Percentage Markup
This is easy all you have to do is plug in -3 into x^2
f(-3)=(-3)^2=(-3)(-3)=9
Answer: f(-3)=9 :)
Step 1: Calculate the 0.035 that you already know how to do.
Step 2: Calculate 1-0.035 = 0.965
Step 3: Look at the Z table and find 0.965 (or as close to this value as possible)
<span>Step 4: Look at the far left of the row containing 0.965 </span><span> 1.8</span>
<span>Step 5: Look at the top of the column containing 0.965 </span><span> 0.01</span>
<span>Step 6: Add these two values </span><span> 1.81</span>
<span>Step 6 is your z value that corresponds to that level of confidence.</span>
