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3 years ago

2) BRAINLIEST AND 10+POINTS :) PLS HELP ASAP

Mathematics

2 answers:

Mariana [72]3 years ago

7 0

Answer:

x=2

Step-by-step explanation:

9 ^(2x-1) = 3 ^ (-x+8)

Rewrite 9 as 3^2

3^2 ^(2x-1) = 3 ^ (-x+8)

We know a^b^c = a^(b*c)

3^(2 *(2x-1)) = 3 ^ (-x+8)

3 ^ (4x-2) = 3 ^ (-x+8)

The bases are the same so the exponents are the same

4x-2 = -x+8

Add x to each side

4x-2+x = -x+x+8

5x-2 =8

Add 2 to each side

5x-2+2 = 8+2

5x = 10

Divide each side by 5

5x/5 = 10/5

x=2

Bess [88]3 years ago

4 0

Answer:

b) 2

Step-by-step explanation:

9^(2x-1) = 3^(-x+8)

3²^(2x-1) = 3^(-x+8)

3^(4x-2) = 3^(-x+8)

4x - 2 = -x + 8

5x = 10

x = 2

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A set of data is described as:

Savatey [412]

The group of measures which would lead to the provided conclusion is the range is 7, the mean of the data is 12, the median is 12 and the mode is 11.

Given that, the data is around 12. If another measurement were taken, it would probably be around 12.

We need to find which group of measures would lead to this conclusion.

<h3>What are the mean, median and mode of the data set?</h3>

The mean of the data is the average value of the given data. The mean of the data is the ratio of the sum of all the values of data to the total number of values of data.

The median of the data is the middle value of the data set when it arrange in ascending or descending order. The data is around 12 which suggests that the median is 12.

Median=12

The mode of a data set is the value, which occurs most times for that data set. The value which has the highest frequency in the given set of data is known as the mode of that data set.

Mean and mode is around the median. For this case, the mean of the data is 12 and the mode is 11.

Mode=11

Mean=12

Thus, the group of measures which would lead to the provided conclusion is the range is 7, the mean of the data is 12, the median is 12 and the mode is 11.

Learn more about the mean, median and mode here;

brainly.com/question/14532771

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5 0

2 years ago

For what values of the variables are the following expressions defined? 1. 5y+2 2. 18/y 3. 1/x+7 4. 2b/10−b Example: X>7

Serga [27]

Answer:

1. All real numbers

2. All real numbers except y = 0

3. All real numbers except x = -7

4. All real numbers except b = 10

Step-by-step explanation:

For any function to be defined at a particular value, it should not be approaching to a value $\infty$ or it should not give us the $\frac{0}{0}$ (zero by zero) form when the input is given to the function.