20 points !! Alexis has the following grades in his math class:

Homework grades: 76, 82, 85

Quiz grades: 74, 80, 80

Test Grades: 60, 68

If the teacher weights homework at 10%, Quizzes at 20%, Tests at 60%, what is her current class average? Please be careful with this one the categories don’t sum to 100% because she hasn’t taken her final exam yet.

Question 5 options:

a) 81

b) 76

c) 69

d) 72

C

Step-by-step explanation:

First we need to find the average in every section, such as the Hw, quiz and tests.

(76+82+85)/3=81 Hw

(74+80+80)/3=78 quiz

(60+68)/2=64 test

Hw is weighted at 10% so it is 81×1=81.

Quizzes are weighted at 20% so 78×2=156

Tests are weighted at 60% so 64×6=384.

Add them all up then divide them by 9,

(81+156+384)/9= 69%

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.