Identify the mean and standard deviation of the graph.
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8.2 13.4
18.6 23.8
29 34.2 39.4
mean = 23.8; standard deviation = 2.7
mean = 18.6; standard deviation = 5.2
mean = 23.8; standard deviation = 5.2
mean = 18.6; standard deviation = 2.7

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

∠cbe and ∠deb are same-side interior angles.

i took the test

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.