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spin [16.1K]
3 years ago
15

6 of 12

Mathematics
2 answers:
Ganezh [65]3 years ago
8 0
The answer is 60km/h hope this helps have a great day !!
aleksklad [387]3 years ago
6 0

Answer:

60km/h

Step-by-step explanation:

180 ÷ 3 = 60

60km/h

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Please help me I’m not the smartest
Katyanochek1 [597]
(3x+1) + (2x+8) = 180
5x+9=180
5x=171
8 0
3 years ago
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Help ! I’ll mark you brainly
Helga [31]

Answer:

There you go :)

Hope this helped you

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4 0
3 years ago
The mean monthly utility bill for a sample of households in a city is $70, with a standard deviation of $8. Between what two val
ddd [48]
Empirical rule dictates that, in a Bell-shaped distribution, 95% of data lies within 2 standard deviation on either side of the mean.

Therefore,
Lower value = mean-2SD = 70-2*8 = 70-16 = 54
Upper value = mean+2SD = 70+2*8 = 70+16 = 86

Then, 95% of the data lies between $54 and 84. These values can also be taken as the true mean of the population considering 95% confidence when sample mean has been calculated. In this regard, 2SD can be regarded as the margin error.
7 0
3 years ago
Helppppppppppp me please
Scilla [17]

Answer:

18.85 rounded

Step-by-step explanation:

The length of an arc depends on the radius of a circle and the central angle Θ. We know that for the angle equal to 360 degrees (2π), the arc length is equal to circumference. Hence, as the proportion between angle and arc length is constant, we can say that:

L / Θ = C / 2π

As circumference C = 2πr,

L / Θ = 2πr / 2π

L / Θ = r

We find out the arc length formula when multiplying this equation by Θ:

L = r * Θ

Hence, the arc length is equal to radius multiplied by the central angle (in radians).

7 0
3 years ago
What type of quadrilateral is created by the points:<br><br> L (-5,4), M (2,2), N (0,-3), S (-7,-1)
kumpel [21]

Given same lengths and slopes of the opposite sides and nature of the angle between adjacent sides, we have;

  • The type of quadrilateral is a parallelogram

<h3>How can the type of quadrilateral be found?</h3>

The given points are;

L(-5, 4), M(2, 2), N(0, -3), S(-7, -1)

Lengths of the sides are;

Length of LM = √((2-(-5))²+(2-4)²) ≈ √(53)

Length of MN = √((2-0)²+(2-(-3))²) ≈ √(29)

Length of NS = √((0-(-7))²+((-3)-(-1))²) ≈ √(53)

Length of LS = √(((-7)-(-5))²+((-1)-4)²) ≈ √(29)

Therefore;

  • The lengths of opposite sides are the same.

Slope of LM = (2-4)/(2-(-5)) = -2/7

Slope of MN = (2-(-3))/(0-2) = 5/2

Slope of NS = ((-3)-(-1))/(0-(-7)) = -2/7

Slope of LS = ((-1)-4)/(-7-(-5)) = 5/2

Therefore;

  • The opposite sides are parallel, and

  • The the adjacent sides are not perpendicular

The quadrilateral created by the points L(-5, 4), M(2, 2), N(0, -3), S(-7, -1) is therefore;

  • A parallelogram

Learn more about parallelograms here:

brainly.com/question/1100322

#SPJ1

8 0
2 years ago
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