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stich3 [128]
3 years ago
10

Hi! Please do ALL problems for 50 pts and brainlest:)

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
6 0

Answer:

1. 125

2. 2/73≈0.02739726

3. 27.77

4. IM SORRY IDK THE ABOUT THE WORD PROBLEM

Step-by-step explanation:

1. Multiply 1/2=0.5 and 250 to get 250/2=125.

2. Reduce the fraction 42/1533≈0.02739726 to lowest terms by extracting and canceling out 21; 2/73

3. Add 19.17 and 8.6 to get 27.77.

27.77

please give me the brainliest answer!!!!!!!!!!!!!!

Harlamova29_29 [7]3 years ago
5 0

Answer: 1. 125

2. 36.5

3. 27.77

1.  4/9 left of the pizza

Step-by-step explanation: Hope this helped! :)

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1.

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6 0
3 years ago
Gabby is buying flowers for a friend. She can choose daisies, carnations, or sunflowers. She can put the flowers in a clear, red
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Answer:

Daisies: Clear vase

Carnations: Red vase

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Step-by-step explanation:

Your using all the objects and is is in all the combinations.

8 0
3 years ago
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A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of
disa [49]

Answer:

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48  

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X         5       6         7       8        9        10

P(X)   0.05   0.15  0.33  0.28   0.12   0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:  

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48  

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :  

E(X^2)=\sum_{i=1}^n X^2_i P(X_i)  

And using the formula we got:  

E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46  

Then we can find the variance with the following formula:  

Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096  

And then the standard deviation would be given by:  

Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229  

5 0
3 years ago
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This one.

The doubly-shaded area is the solution set. The dashed line is not included.

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3 years ago
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