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Andrej [43]
3 years ago
5

Solve the equation for y. 8x – 9y = 11

Mathematics
2 answers:
gavmur [86]3 years ago
4 0
8x - 9y = 11

Subtract 8x to both sides:

-9y = -8x + 11

Divide -9 to both sides:

y = 8/9x - 11/9

or

y = 8/9x - 1 2/9
White raven [17]3 years ago
4 0
8x - 9y = 11\\
9y=8x-11\\
y=\dfrac{8}{9}x-\dfrac{11}{9}
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Raman buys two packages of chicken. One package weighs 1.5 pounds and the other weighs 3.4 pounds. The chicken cost 3.25 per pound. What is the total price? the answer is 8:00


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4 years ago
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the origin
Tema [17]

Answer:

s = 19.7

Step-by-step explanation:

First we need to calculate the mean x' of the sample as:

x'=\frac{55+18+39+20+20+44+69}{7}=37.9

We sum all the scores and divide them by the number of scores.

Then, the standard deviation s is calculated as:

s=\sqrt{\frac{(55-37.9)^2+(18-37.9)^2+(39-37.9)^2+(20-37.9)^2+(20-37.9)^2+(44-37.9)^2+(69-37.9)^2}{7-1} }\\ s=19.7

We square every score less the mean, sum every value, then divide that by the number of scores less 1 and finally, we calculate the square root.

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8 0
4 years ago
Find the following list of data calculate a demean be the maid and see mode or mothers for the following numbers listed in the p
Sholpan [36]

Answer:

Mean = 4.8875

Median = 4.6

Mode = 4.5 and 7.7

Step-by-step explanation:

Mean is the sum of total of data divided by the sample size

Sum total = 1.5 + 4.7 + 6 + 7.7 + 7.7 + 4.5 + 2.5 + 4.5

Sum total = 39.1

Sample size = 8

Mean = 39.1/8

Mean = 4.8875

To get the median we need to first rearrange

1.5, 2.5, 4.5, 4.5, 4.7, 6, 7.7, 7.7

Median = 4.5 + 4.7/2

Median = 4.6

Hence the median is 4.6

Mode is the value occuring the most. Since 4.5 and 7.7 both occurs twice, hence the mode of the data is 4.5 and 7.7

4 0
3 years ago
Kyle earned 4 times as much as Ken last summer. If they earned a total of $750, how much did they each earn?
Sholpan [36]

Answer:

600, 150

Step-by-step explanation:

Kyle is x

ken is y

x = 4y

x+y = 750

replace x with 4y

4y + y = 750

5y = 750

y = 150

so ken earned 150

x + 150 = 750

x = 600

so Kyle earned 600

6 0
3 years ago
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