For what shape??
pls answer, then we can get somewhere with this question!! :)
<h3>
Answer:</h3>
- A
- B
<h3>
Step-by-step explanation:</h3>
1. A decrease of 3.8% is equivalent to a multiplier fraction of -0.038. The only answer choice that has such a multiplier is A.
In an instance such as this, the "rate" is usually some (fractional) change in some period of time. Since the exponent must be unitless, the rate is effectively (some fraction) "per year" so that multiplying by "t" years cancels the units and results in a pure number.
___
<em>Comment on the exponential</em>
If the actual change were -3.8% per year, the exponential term would look like (1 - 0.038)^t = 0.962^t. By writing it as e^(-0.038t), the decrease is effectively compounded continuously. As a result, over a year's time, the decrease is actually about 3.73%, not 3.8%.
_____
2. If ║x/2║ is a magnitude function, answer choices B and D are equivalent. Thus, we must assume it is a "greatest integer" function. Then the number of desserts prepared will be ║x/2║, and the corresponding revenue will be 1.2║x/2║. Since x is in minutes, 2 to 4 hours will be 120–240 minutes. The appropriate choice is B.
If you are going by the graph you will know that it is part B and it is the accurate answer>.
Answer:
4 1/6
Step-by-step explanation:
15 3/4 ÷ 2 5/8 × 5 5/6 ÷ 8 2/5
assuming this order of operations:
(15 3/4 ÷ 2 5/8) × (5 5/6 ÷ 8 2/5)
63/4 x 8/21 = 505/84 = 6
35/6 x 5/42 = 175/252
6 x 175/252 = 1050/252 = 4 42/252 = 4 1/6
Well we know that A+B+C=180
and we know that A=45 and B=90
so together there 135
180-135=45
so C=45
now we also know that a straight line is 180 degrees so 180-45 =135(angle f)
135+15(angle e)=150
180-150=30
so angle d=30
