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Anastasy [175]
3 years ago
5

The ratio of boys to girls in math classes is 5 :7. if there are 60 students in all or her classes, how many are boys

Mathematics
1 answer:
daser333 [38]3 years ago
6 0
Total of ratio 5+7=12

60/12 = 5

For boys 5x5 = 25 boys in her class

(For girls 7x5 = 35)
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In a linear regression model, the variable that is being predicted or explained is known as _____________. It is denoted by y an
Andreyy89

Answer:

<h3>"In a linear regression model, the variable that is being predicted or explained is known as <u>_dependent variable</u> It is denoted by y and is often referred to as the response variable".</h3>

Step-by-step explanation:

Given that "In a linear regression model, the variable that is being predicted or explained is known as <u>dependent variable</u> It is denoted by y and is often referred to as the response variable".

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Which expression is equivalent to 2(c+7)-18x+4/5
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Answer:

2c - 18x + 74/5

Step-by-step explanation:

<u>Step 1:  Distribute </u>

2(c + 7) - 18x + 4/5

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<em>2c + 14 - 18x + 4/5 </em>

<u>Step 2:  Combine like terms </u>

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Answer:  2c - 18x + 74/5

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3 years ago
The graph shows a reflection in the x-axis. The matrix M such that, for any point (x, y), M(x, y) = (x', y') is
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Answer:

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Step-by-step explanation:

A reflection about the x-axis has the rule

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Then the matrix multiplication gives

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cx+dy=-y............(2)

Solving the previous equations (1) and (2) gives

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y= the t intercept which is 1
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Answer: 95% confidence interval would be (26.01,29.39).

Step-by-step explanation:

Since we have given that

n = 50

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so, z = 1.96

So, it becomes,

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3 years ago
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