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2 years ago

Please help for 50 POINTS!!!!

Mathematics

1 answer:

Debora [2.8K]2 years ago

7 0

Solution:

We know that:

Sum of interior angles of triangle: 180°
Those 2 bars drawn on GH and IH defines that GH = IH.

This means that:

The triangle is an isosceles triangle.
The bottom two angles are equal.

Equation created: 58 + x + x = 180

Simplify the LHS.

58 + x + x = 180
=> 58 + 2x = 180

Subtract 58 both sides.

58 - 58 + 2x = 180 - 58
=> 2x = 122
=> x = 61

Thus, the measure of ∠GIH is 61°.

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JulsSmile [24]

Answer:

The linear regression equation that represents the set of data is:

$y=1083.48+23.73x$

The predicted number of new cases for 2013 is 1368.

Step-by-step explanation:

The general form of a linear regression is:

$y=a+bx$

Here,

y = dependent variable

x = independent variable

a = intercept

b = slope

Compute the values of a and b as follows:

$\begin{aligned} a &= \frac{\sum{Y} \cdot \sum{X^2} - \sum{X} \cdot \sum{XY} }{n \cdot \sum{X^2} - \left(\sum{X}\right)^2} = \frac{ 6857 \cdot 55 - 15 \cdot 17558}{ 6 \cdot 55 - 15^2} \approx 1083.476 \\ \\b &= \frac{ n \cdot \sum{XY} - \sum{X} \cdot \sum{Y}}{n \cdot \sum{X^2} - \left(\sum{X}\right)^2} = \frac{ 6 \cdot 17558 - 15 \cdot 6857 }{ 6 \cdot 55 - \left( 15 \right)^2} \approx 23.743\end{aligned}$

The linear regression equation that represents the set of data is:

$y=1083.48+23.73x$

Compute the predicted value of the number of new cases for 2013 (i.e. x = 12) as follows:

$y=1083.48+23.73x$

$=1083.48+(23.73\times12)\\\\=1083.48+284.76\\\\=1368.24\\\\\approx 1368$

Thus, the predicted number of new cases for 2013 is 1368.

8 0

3 years ago

Please help i really need it, i will give brainliest to the right answers

scZoUnD [109]

Answer:

1. 5

2. 1.29

3. 9.90

Step-by-step explanation:

They are buying 5 of each thing, so multiply it by 5.

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fenix001 [56]

Answer:

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Step-by-step explanation:

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