Group/section restrictions. Must post first. The following graph from the Economist, July 22, 2019 (Link to Economist Article) shows two curves that are approximately normal.

What is the mean of each curve?
Estimate the standard deviation (using the point of inflection or range rule of thumb).
What do the mean and standard deviation tell you about the way Republicans and Democrats in Congress vote?
After your initial post, respond to two others in your group. What conclusions did you share, and what did you interpret differently?

The graph shows a blue normal distribution for Democrats, who vote with rich constituents 35% of the time on average. And it shows a red curve, Republicans, voting with the rich 86% of the time

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

i'm not really sure how to answer that

step-by-step explanation: