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Pepsi [2]
3 years ago
9

Review &reviewImagine that you have a bag containing 10 marbles ofdifferent colors. You have drawn a marble, recorded itscol

or, and replaced it fifty times, with the following results:9 purple, 16 orange, 6 yellow, and 19 green marbles. Makea prediction for how many marbles of each color are in thebag. Show all of your work or explain your reasoning.

Mathematics
1 answer:
Yakvenalex [24]3 years ago
5 0
answer is 50 you have to add them together and you figure out that it's 50 nine purple 16 orange 6 yellow 19 green 16 + 6 + 19 + 9 equals 50 you haven't answered as 50 10 different marbles 50 replace
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12.57 round to the nearest tenth
Lerok [7]
You get 12.6

After the decimal starts the the tenth place. In order to round to the tenth place, we need to know the hundredth place which is the 7. If the hundredth place is 5 or greater then we round up and if it's 4 or lower then we keep the tenth place the same number as it is before.

Since the hundredth place is greater than or equal to 5, we round up the tenth place to 6. If you have any questions then leave a comment. Good luck!
5 0
3 years ago
Read 2 more answers
If y-3x=9, 7x+y=25, what is the value of x and y?
lianna [129]

\bold{\rm{Given}}\text{ : If y - 3x = 9, 7x + y = 25, what is the value of x and y}?

\bold{\rm{Solution}} \text{: We'll solve this by substitution method}

\dashrightarrow  y - 3x = 9 \\  \\  \dashrightarrow   \boxed{y = 9 + 3x } \qquad .. \sf eq(1)

\text{we got the value of y now getting the value of x}

\looparrowright 7x + y = 25 \\  \\  \looparrowright 7x = 25 - y \\  \\  \looparrowright  \boxed{x =   \frac{25 - y}{7}} \qquad .. \sf eq(2)

\text{Now, putting y = 9 + 3x in eq(2)}

\hookrightarrow  x =  \frac{25 - y}{7}   \\  \\ \hookrightarrow  x =  \frac{25 - 9 + 3x}{7}  \\  \\ \hookrightarrow  7x =  25 - 9 + 3x \\  \\ \hookrightarrow  7x - 3x =  16 \\  \\ \hookrightarrow  4x = 16 \\  \\ \hookrightarrow  x =  \frac{16}{4}  \\  \\ \star \quad  \boxed{ \green{ \frak{ x = 4}}}

\text{Now we know the value of x, for getting y we need to put x in eq(1)}

: \implies y = 9 + 3x \\  \\   : \implies y = 9 + 3(4) \\  \\  : \implies y = 9 + 12  \\  \\    \star \quad  \boxed{\frak{  \green{y = 21}}}

\text{Hence, values of x and y are} \:  \frak{ \green{4}}  \: \text{and} \:  \frak{ \green{21}} \: \text{respectively}.

4 0
3 years ago
Amanda is doing a show for 6.99 a minute and only receives 20% OF THE DOLLAR of that from her company. If she does a show for 10
maw [93]

Answer:

Step-by-step explanation:

22 dollars

5 0
3 years ago
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A normal distribution has \mu = 65 and \sigma = 10. Find the probability that the average score of a group of n = 4 people is be
Kipish [7]

Answer:

The probability that the average score of a group of n = 4 people is between 70 and 75=0.13591

Step-by-step explanation:

We are given that

\mu=65

\sigma=10

n=4

We have to find the probability that the average score of a group of n = 4 people is between 70 and 75.

P(70

=P(\frac{5}{5}

=P(1

=P(Z

=0.97725-0.84134

=0.13591

Hence,  the probability that the average score of a group of n = 4 people is between 70 and 75=0.13591

4 0
3 years ago
Challenger Elementary School has 800800800 students. Every Wednesday, 12\%12%12, percent of the students stay after school for C
Hunter-Best [27]
Ummm if the numbers are 800 and 12% the answer is 96 students
12/100=x/800
100x=9600
x=96
7 0
4 years ago
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