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mojhsa [17]
3 years ago
10

seventy-five percent, or 15, of the students in Emily's homeroom class are going on a field trip. two thirds or 12, of the stude

nts in Santiago's homeroom class are going on the field trip. Wich class has more students? justify your answer.
Mathematics
1 answer:
zzz [600]3 years ago
6 0
Santiago's because 75/100=15/20 and 2/3=12/72
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The coefficient of determination of a set of data points is 0.93 and the slope of the regression line is -5.26. Determine the li
skad [1K]

Answer:

- 0.964

Step-by-step explanation:

Given that Coefficient of determination (R^2) = 0.93

Slope of regression line = - 5.26

The linear correlation Coefficient =?

The Coefficient of determination (R^2) is used to obtain the proportion of explained variance of the regression line. It is the square of the linear correlation Coefficient (R).

Hence. To obtain the linear correlation Coefficient (R) from the Coefficient of determination (R^2); we take the square root of R^2

Therefore,

R = √R^2

R = √0.93

R = 0.9643650

R = 0.964

However, since the value of the slope is negative, this depicts a negative relationship between the variables, hence R will also be negative ;

Therefore, R = - 0.964

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mixas84 [53]

Answer:

7 billion but it's getting close to 8 billion

Step-by-step explanation:

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3 years ago
18. Find the measure of each numbered angle.
DiKsa [7]

Answer:

m∠1 = 50°, m∠2 = 90°, m∠3 = 40°, and m∠4 = 50°

Step-by-step explanation:

Angles on straight line are equal;

m \angle1 + 130 = 180

m \angle1= 180 - 130 \\ m \angle1= 50

Vertical angles are equal,

m \angle4=  m \angle \: 1= 50 \degree

Complementary angles add up to 90°.

m \angle3 + m \angle4  = 90 \degree \\ 40 + m \angle3 = 90 \degree. \\  m \angle3 = 90 \degree - 50 \degree \\ m \angle3 = 40 \degree

Angles on straight line adds up to 180°

m \angle1 + m \angle2 + m \angle3 = 180 \degree

40 + m \angle2 + 50 = 180 \\  m \angle2 = 180 - 50 - 40 = 90

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