-12.3 + 5.1 = x help me

Mathematics

1 answer:

Allushta [10]2 years ago

8 0

Answer:

x = -7.2

Step-by-step explanation:

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3. Use the following table to answer questions (a – c).

sineoko [7]

Answer:

See below

Step-by-step explanation:

B) The correlation coefficient is $r=0.75$ , which can be determined by plugging the data into a TI-84 calculator.

C) A correlation coefficient of $r=0.75$ indicates that the correlation between the independent and dependent variable (x and y in this case) is moderately strong with a positive correlation. The closer $r$ is to 1, the stronger the positive correlation. The closer $r$ is to -1, the stronger the negative correlation. If $r$ is closer to 0, then there's no correlation.

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2 years ago

Please help ASAP ,It’s a test due in 5min

REY [17]

Answer:

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2 years ago

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For what values of h and k does the linear system have infinitely many solutions? 2x1 + 5x2 = −1 hx1 + kx2 = 7

Kruka [31]

Answer:

The values of $h$ and $k$ for a linear system with infinitely many solutions are -2 and 5, respectively.

Step-by-step explanation:

Let $2\cdot x_{1}+5\cdot x_{2} = -1\cdot h\cdot x_{1} + k\cdot x_{2} = 7$ , if this linear system has infinitely many solutions, then the following conditions must be met: