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sveticcg [70]
3 years ago
8

22 is what percent of 40 75% of what is 36

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
6 0
A) 55%
b) 48

Hope it helps!
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​it's believed that as many as 2222​% of adults over 50 never graduated from high school. we wish to see if this percentage is t
jenyasd209 [6]

The given values are:

p =  22% = 0.22

Zc = 1.645 at 90% confidence level.

margin of error, E = 0.04

 

The formula we can use here is:

E = sqrt(pq/n) * Zc

 0.04 = sqrt(0.22*(1-0.22)/n)*1.645

n = (0.22*(1-0.22))*(1.645/0.04)^2

n = 290.22

 

hence minimum sample size = 290 

7 0
3 years ago
Q and R are independent events. if P(Q)= 1/4 and P (R)= 1/5, find P(Q and R)
Setler79 [48]

Answer:

1/4 * 1/5 = 1/20

3 0
3 years ago
6. Meg started her trip with 112 gallons of gas in her car's gas tank. She bought an additional 6 gallons on her trip and arrive
dimaraw [331]

Answer:

i think its 115

Step-by-step explanation:

aint

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4 0
3 years ago
Consider a triangle ABC like the one below. Suppose that a=51, b=16, and A=108. (The figure is not drawn to scale.) Solve the tr
Blababa [14]

Answer:

B = 17.4°

C = 54.6°

c=43.7

5 0
3 years ago
2x+5(-3x-10)=-154 I just need to know for this one so I can do the rest
allochka39001 [22]
2x + 5(-3x-10) = - 154
2x -15x -50 = -154
-13x = -104
13x = 104
x = 104/13

X = 8
6 0
3 years ago
Read 2 more answers
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