Please help me!! this is so confusing

Mathematics

2 answers:

horsena [70]3 years ago

8 0

Answer 1: at 8:15, the hour hand is at an angle of 247.5 degrees. The hour hand is at an angle of 105 degrees, whereas the minute hand is at an angle of 180 degrees

Answer 2: What is the measure, in degrees, of the acute angle formed by the hands of a 12-hour clock that reads exactly 3:10? Explanation: The entire clock measures 360°. As the clock is divided into 12 sections, the distance between each number is equivalent to 30° (360/12)

coldgirl [10]3 years ago

7 0

Answer:

1) 247.5 degrees

2) 30 degrees

Step-by-step explanation:

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I got c which is 100 but I don’t know how jerry got A

Anna007 [38]

Choice C is the correct answer because

$\frac{(6+2)^3-12}{5}\\\\\frac{(8)^3-12}{5}\\\\\frac{512-12}{5}\\\\\frac{500}{5}\\\\100\\\\$

So in short, $\frac{(6+2)^3-12}{5}=100\\\\$

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The mistake Jerry likely made was that he only cubed the 2 and didn't realize the 6 was part of that cubing process. It seems he didn't add first and decided to cube before adding.

This is probably what steps Jerry did

$\frac{6+2^3-12}{5}\\\\\frac{6+8-12}{5}\\\\\frac{14-12}{5}\\\\\frac{2}{5}\\\\$

But as mentioned, those steps are incorrect because the 6 is part of the cubing operation. In other words, Jerry should have added the 6+2 first before cubing afterward (due to PEMDAS determining the order of operations).

Or you could think of it like this

$\frac{(6+2)^3-12}{5}\\\\\frac{(6+2)(6+2)(6+2)-12}{5}\\\\\frac{(8)(8)(8)-12}{5}\\\\\frac{512-12}{5}\\\\\frac{500}{5}\\\\100$