Answer:
Step-by-step explanation:
Jacket multiplied by 20 percent
$120.00 x .20 = 24
Jacket minus the answer
$120 - 24 =96
New cost of jacket is $96
Now multiply that by 6.25% tax
$96 x 6.25 = 6.00
Add the sales tax to cost of jacket
$96.00 + 6.00 = $102.00
Hi there!
We can solve by setting both equations equal to each other:
.5x + 4 = -.25x² + 5
Move everything to one side:
0 = -.25x² - .5x + 1
Multiply both sides by 4 to cancel out the decimals:
0 = -x² - 2x + 4
Factor out negative from both sides:
0 = x² + 2x - 4
Use the quadratic formula:
Plug in the corresponding terms:
Simplify:
Simplify the radical to reduce:
Divide all terms by 2:
The results, t (22) = 1.08, p > 0.05, specify that the null hypothesis is plausible. In addition, it is a classification of hypothesis in statistics that puts forward no statistical significance occurs in group of specified interpretations. The null hypothesis tries to display that no variation occurs among variables or that a single variable is no dissimilar than its mean. It is supposed to be true up until statistical evidence nullifies it for an substitute hypothesis. The statistical significance defines that a result from testing or investigating is not likely to happen randomly or by coincidental but is as a substitute likely to be attributable to a precise reason.
Answer:
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Step-by-step explanation: