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Zarrin [17]
2 years ago
12

A bag contains 3 red cubes, 4 yellow cubes, and 3 green cubes. You choose a cube without looking, note its color, and put the cu

be back in the bag. Suppose you do this a total of 80 times. About how many times would you expect to choose a red or yellow cube?
Mathematics
2 answers:
Alex Ar [27]2 years ago
6 0

Answer:

is it multiple choice that would help

Step-by-step explanation:

Nastasia [14]2 years ago
4 0

Answer:

  • 56 times

Step-by-step explanation:

<u>Total cubes:</u>

  • 3 + 4 + 3 = 10

<u>Number of yellow or red:</u>

  • 3 + 4 = 7

<u>Probability of yellow or red:</u>

  • 7/10

<u>Same probability 80 times:</u>

  • 80*7/10 = 56

Expected number is 56

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Evalute 27⋅((3^3)^−1)
shtirl [24]

Answer: 0.81

Step-by-step explanation:

=27⋅((3^3)^−1)

Do the brackets first:

3^3 is the same as 3³ so it is <u>27</u>

then:

27^-1 equals <u> 0.03</u>

And lastly:

multiply 27 and 0.03

27(0.03)=<em><u>0.81</u></em>

8 0
3 years ago
GEOMETRY SIDE LENGTHS​
PilotLPTM [1.2K]

Answer:

I believe that the third answer is correct..... but I'm not positive.

Step-by-step explanation:

if you get the third side of the triangle to be 71 then it would go first. Then it would go to 45-55. And lastly to 71-45

3 0
2 years ago
Calculate the annual return percentage
const2013 [10]
The annual returns will be calculated as follows:
a] Here we use the formula:
A=p(1+r/100)^n
A=future amount
p=principle
r=returns
n=time
We are given:
A=500, p=400, t=1
Plugging the values in the formula we obtain:
500=400(1+r)^1
simplifying and solving for r:
1.25=1+r
thus
r=1.25-1
r=0.25~25%

b] Using the formula above:
A=p(1+r/100)^n
A=2500+100=2600, p=2000, n=1 year
plugging the values in the equation we obtain:
2600=2000(1+r)^1
simplifying and solving for r we obtain:
2600/2000=1+r
1.3=1+r
hence
r=1.3-1
r=0.3~30%

7 0
3 years ago
Please help!!!!!!!!!!!!!!!!!!!!!
sleet_krkn [62]
It would be c I think
7 0
2 years ago
What is -157/20 as a decimal
abruzzese [7]
-\frac{157}{20}=-\frac{140+17}{20}=-\left(\frac{140}{20}+\frac{17}{20}\right)=-7\frac{17}{20}\\\\-7\frac{17}{20}\to\ divide\ 17\ by\ 20\to\boxed{-7\frac{17}{20}=-7.85}\\\\other\ way\\\\-7\frac{17}{20}=-7\frac{17\cdot5}{20\cdot5}=-7\frac{85}{100}=\boxed{-7.85}
4 0
3 years ago
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