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Leni [432]
3 years ago
7

20 POINTS!! Betty arranged equal numbers of movies on four shelves of a shelving unit and placed 6 of her favorite movies on the

top shelf. If x is the number of movies on each shelf, the expression for the total number of movies on the shelving unit is 4x + 6.
If each of the 4 shelves holds 12 movies, how many movies does Betty have on her shelving unit? Show your work.
Mathematics
1 answer:
Bess [88]3 years ago
6 0

Answer:

54 movies

Step-by-step explanation:

shelving unit has 4x + 6 movies

and  each  holds 12 movies,

then x =12

Then solve 4x + 6  for x= 12

4(12) + 6 = 54

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Solve -2x + 6 = -20.<br><br> (A) -13<br> (B) 13<br> (C) -7<br> (D) 7
kow [346]
Answer: x=13

explanation:
-2x+6=-20
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-2x=-26
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How many solutions does this equation have 10+5x/15=4
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I think it only has One

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If Benito is selecting samples of five values from the table, which row will result in the greatest mean? Population Data Row 1
Vilka [71]

Answer:

4th row will result in the greatest mean.

Step-by-step explanation:

We are asked to find the row with greatest mean from our given rows.

We will use formula \bar{x}=\frac{\Sigma x}{n}, where,

\bar{x}=\text{Mean},

\Sigma x=\text{Sum of all data values},

n=\text{Number of data points in sample}

Let us find mean of each row using above formula.

\text{Mean of row 1}=\frac{4+2+2+3+3}{5}

\text{Mean of row 1}=\frac{14}{5}

\text{Mean of row 1}=2.8

Therefore, mean of 1st row is 2.8.

\text{Mean of row 2}=\frac{3+3+4+3+2}{5}

\text{Mean of row 2}=\frac{15}{5}

\text{Mean of row 2}=3

Therefore, mean of 2nd row is 3.

\text{Mean of row 3}=\frac{2+4+3+4+3}{5}

\text{Mean of row 3}=\frac{16}{5}

\text{Mean of row 3}=3.2

Therefore, mean of 3rd row is 3.2.

\text{Mean of row 4}=\frac{3+4+4+7+3}{5}

\text{Mean of row 4}=\frac{21}{5}

\text{Mean of row 4}=4.2

Therefore, mean of 4th row is 4.2.

Since 4th row has the highest mean, therefore, 4th row will result in the greatest mean.

6 0
3 years ago
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castortr0y [4]

Answer:

y= -x(x+2)(x-1)².

Step-by-step explanation:

the graph and equation is in the attached picture.

The zeros of function y are: -2; 0 and 1 - they help to determine the required equation.

4 0
2 years ago
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