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NISA [10]
4 years ago
13

What is the answer to h -13h+-38=27

Mathematics
2 answers:
podryga [215]4 years ago
6 0
H = -5

First, simplify the equation:
-13h - 38 = 27

Second, add 38 to both sides:
-13h - 38 + 38 = 27 + 38 (to cancel it out)
-13h = 65

Finally, divide 13 on both sides:
-13h/-13 = 65/-13
h = -5
riadik2000 [5.3K]4 years ago
3 0
-13h + -38 = 27
You have to have all the h alone and in the same side.
-13h=65
You have to divide -13h by -13 to find one h
h = -5
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The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a fin
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Part a

The regression equation is, \hat y = 29.3877 - 0.9596x

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The number of crimes for a city at 20 police officers was appointed is approximately 10.

Step-by-step explanation:

<u>x          y         xy         x²         y²</u>

15      17        255      225         289

17      7            119      289          49

17      13         221       289        169

12      21          252      144          441

25      5         125       625          25

11       19          209        121           361

27     7           189        729           49

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146    95      502      2906      1419

Therefore,

\hat B_1=\frac{n \sum xy - (\sum x) (\sum y)}{n (\sum x^2) - (\sum x)^2}

= \frac{8(1502) - (146)(95)}{8(2906)-(146)^2} \\\\= \frac{-1854}{1932} \\\\= - 0.9596

The calculation of the intercept coefficient is as follows:

\hat B_0= \frac{\sum y }{n} - \hat B_1 (\frac{\sum x}{n} )

= \frac{95}{8} - (-0.9596)(\frac{146}{8} )\\\\= 11.875 + 17.5127\\\\= 29.3877

The regression equation is, \hat y = 29.3877 - 0.9596x

b)

The calculation is as follows:

\hat y= 29.3877 - 0.9596x\\\\= 29.3877-0.9596(20)\\\\=29.3877-19.1920\\\\=10.1957

≅ 10

The number of crimes for a city at 20 police officers was appointed is approximately 10.

The number of crimes for a city at 20 police officers was appointed is approximately 10.

That is, the number of polices increases then the number of crimes will be decreases.

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The coordinates of triangle GBW are G (20, 10) B (-35, 20), and W (5,-10). Is GBW a right triangle? Justify your answer.
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We know from Pythagoras' Theorem, a right angle triangle can be identified by the relationship:

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From this, we know that:
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