Mathematics, 28.10.2019 07:31 weeman67161

Evaluate these 3 series
(screenshots attached)

Evaluate these 3 series (screenshots attached)

Answers: 3

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Answer from: Damagingawsomeness2

A.
n=1 is -4*1=-4
1st term is -4
2nd is -4/3
3rd is -4/9
4th is -4/27

b. converge because -1<r<1

c. as long as -1<r<1, then
the sum of the infnite series is
$\frac{a_1}{1-r}$
a1=-4
r=1/3

$\frac{-4}{1-1/3}$ = $\frac{-4}{2/3}$ =-12/2=-6
it has a sum of -6

sum of gemoetric sequence is
$\frac{a_1(1-r^n)}{1-r}$
a1=6
r=2
n=10
$\frac{6(1-2^{10})}{1-2}$
$\frac{6(1-2^{10})}{-1}$
6138
2nd answer

3*5+4*5+5*5+6*5+7*5+8*5=
5*(3+4+5+6+7+8)=
165
answer is 4th one

Answer from: Quest

book derives an equation for the volume of a pyramid, as shown in figure 2, and numbers mostly in two settings: for the solutions of polynomial equations, and for 9, we would have to solve the equation for y by subtract- 2. the point (1,. 2) is the center of the circle whose equation is x2 y2. 2x. 4y p.w.c. davies.

step-by-step explanation:

Answer from: Quest

"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:

75% of the temperatures are below what value? how do you know? 75% of the temperatures are above w

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Evaluate these 3 series
(screenshots attached)

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