Anybody know this i need help

Mathematics

2 answers:

myrzilka [38]4 years ago

8 0

Since it is given that the triangle is a right angle, and one of the other angles is 30 degrees, then we know that this triangle is a 30, 60, 90 triangle. In a 30, 60, 90 triangle, the opposite side of the shortest angle is half of the hypotenuse (which is given as 6). So knowing this, the value of y would be D. 3.

leonid [27]4 years ago

5 0

it's hlf of an equilateral triangle, so Y = 1/2 6

1/2 * 6 =

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In the Fall STA 2023 Beginning of the Semester Survey, students were asked how many parties they attended every week and how man

Shtirlitz [24]

Answer:

-95.78

Step-by-step explanation:

As the researcher decided to make the number of parties attended per week the explanatory variable, this would be variable x in the regression line, and of course, the variable y would be the number of text messages sent per day.

After constructing the linear regression equation, the researcher found that an approximate value $\hat y$ for the actual value of y could be represented by the line

$\hat y=64.96+25.41x$

Since this is an approximate value, it is not expected that it coincides with the actual value of y. We define then the residual for each value of x as the difference between the actual value of y and the approximation for the given x.

For the value x = 2 (the student attended 2 parties that week) the actual value of y is 20 (the student sent 20 text messages per day that week).

The approximate value of y would be according to the regression line

$\hat y(2)=64.96+25.41(2)=64.96+50.82=115.78$