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anzhelika [568]
3 years ago
9

Based on the cards shown, what is P(pink or even)? 1/57/109/10​

Mathematics
2 answers:
kvasek [131]3 years ago
6 0
Four of them are pink so it’s 4/10 and 2/5
Oksana_A [137]3 years ago
5 0

Answer:

7/10

Step-by-step explanation:

To solve this, first find how many of the cards or even. There are 5 even cards out of these 10 cards, so we have the fraction 5/10. Next, we can see that there are 4 pink cards. So, we also have the fraction of 4/10. Then, add these two fractions.

5/10 + 4/10 = 9/10.

But, since the pink 8 card and the pink 10 card are both pink and even, they were counted twice. So, we need to subtract 2/10 from 9/10. This is 7/10.

If I was of any assistance to you, please mark me brainliest! It would mean a lot and I really need more brainliest marks!

God bless! :)

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What is the number between 100 and 200 and divisible by three and five and not divisible by 4
eimsori [14]
195 is between 100-200 and
195/5=39
195/3=65
But 195/4 is not a whole number the answer would be 48.75

So the number is 195. :)
6 0
4 years ago
Rational expression. simplify<br> 36m-48m over 6m.
ladessa [460]
One way is to find common factors

example

8/6=4/3 because 8/6, 8 and 6 have common factor of 2 so divide that out to get 4/3
basically divide the LCM from each

so factor

we can combine 36m-48m into -12m
we have
-12m/6m

common factor is 6m
-12m/6m=(-2)/1 times (6m)/(6m)=-2 times 1=-2

answer is -2
3 0
3 years ago
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
4 years ago
Read 2 more answers
What is the difference of the two polynomials? (NineX squared plus 8X) minus (twoX squared plus 3X)
bagirrra123 [75]

Answer:

7x {}^{2}  + 5x

Step-by-step explanation:

9x {}^{2} + 8x - (2x {}^{2} + 3x) \\  \\  = 9x {}^{2} + 8x - 2x {}^{2} - 3x (remove \: brackets) \\\  \\ = 7x {}^{2} - 5x

5 0
3 years ago
Evaluate (b+c) if a=2,b=-5 and c= -3
anastassius [24]
The answer would be -8
6 0
3 years ago
Read 2 more answers
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