Idon’t know what to do with the -8 and 12

the simplified expression is

2y^15/(3x^5z^12)

Step-by-step explanation:

The given expression is

(-8x^2y^8z^-5) / (12^4y^-7z^7)

To simplify the given expression, we would apply one of the rules of indices. It is expressed as follows

x^a ÷ x^b = x^(a - b)

Applying the above rule of indices, the expression becomes

(-8/12 × x^(2 - 7) × y^(8 - - 7) × z^ (- 5 - 7)

= - 2/3 × x^- 5 × y^15 × z^-12

= - 2/3x^- 5y^15z^-12

= 2y^15/(3x^5z^12)

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

"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: