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Mandarinka [93]
3 years ago
11

Sandy had 219 football cards. She bought 57 more at a garage sale. How many did she have then?

Mathematics
2 answers:
Blizzard [7]3 years ago
8 0

Answer:

276

Step-by-step explanation:

add 219 and 57 together

8_murik_8 [283]3 years ago
5 0
Therefore, Sandy has 276 football cards.
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A+x+6, when a=10 and x=4
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the answer is 20. 10+4+6 is 20

Step-by-step explanation:


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There are 28 students in Ms. Annand’s class. 25% got an A on their last math quiz. How many students did not receive an A on the
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Assume that different groups of couples use the XSORT method of gender selection and each couple gives birth to one baby. The XS
olganol [36]

Answer:

Mean and Standard deviation for the numbers of girls in groups of 36 births are 18 and 3 respectively.

Step-by-step explanation:

We are given that he X SORT method is designed to increase the likelihood that a baby will be a girl, but assume that the method has no effect, so the probability of a girl is 0.5.

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P(X=r)=\binom{n}{r} \times p^{r} \times (1-p)^{n-r} ;x=0,1,2,3,.....

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            r = number of success

            p = probability of success which in our question is probability

                   of a girl, i.e.; p = 0.5

<em><u>Let X = Numbers of girls in groups of 36 births </u></em>

So, X ~ Binom(n = 36, p = 0.5)

Now, mean for the numbers of girls in groups of 36 births is given by;

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Also, standard deviation for the numbers of girls in groups of 36 births is given by;

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                                                      =  3

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3 years ago
5/6 is equivalent to a percent that is larger than 100%. <br><br> True or False<br><br> 13 pts.
omeli [17]

I think it's false.... 5/6 is 83.33% as a percent so I don't think it's true.

8 0
3 years ago
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