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3 years ago

Ursula hiked 6 1/2 kilometers through the woods. How many decímeters did she hike ?

Mathematics

2 answers:

guajiro [1.7K]3 years ago

3 0

Answer:

65,000

Step-by-step explanation:

6 1/2

= 13/2

= 6.5

6.5 * 10,000

= 65,000

Tomtit [17]3 years ago

3 0

First ”kilo”meter means 1000 meters
”deci”meter means 10 meters

Notice there are 3 zeros in the kilo
There is one zero in the deci

Ursula hiked 6.5 kilometers, which is 6500 meters (6.5 x 1000)

6500 meters is 65000 decimeters (6500 x 10)

That's the LONG explanation.

The easiest way to get a answer is to simply move the decimal 4 places to the right. (that's one decimal place for each zero in the kilo and deck.

6.5 Moving your decimal --> 4 places is:

65,000.

Hope that helps.

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The passing yards for the top 5 quarterbacks in the country are 3,832, 3,779, 3,655, 3,642, and 3,579. Find the variance and sta

Leviafan [203]

First get the average passing yards:

(3,832 + 3,779 + 3,655 + 3,642 + 3,579) / 5 = 3,697.4

Now get the squared residuals for each quarterback's passing yards. That is, compute the difference between each data and the average, then square the result. For example,

(3,832 - 3,697.4)^2 = 134.6^2 = 18,117.2

For the others, you should get squared residuals of

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14,018.6

Take the sum of the squared residuals, then - since this is a sample, and not a population of all quarterbacks - divide the sum by 5 - 1 = 4 to get the variance:

(18,117.2 + 6,658.56 + 1,797.76 + 3,069.16 + 14,018.6)/4 = 10,915.3

The standard deviation is just the square root of the variance:

√(10,915.3) ≈ 104.48

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Ray Of Light [21]

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4 years ago

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Musya8 [376]

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Write the equation of the conic section with the given properties:

timurjin [86]

Answer:

$\frac{x^2}{64} + \frac{y^2}{25} =1$

Step-by-step explanation:

An ellipse with vertices (-8, 0) and (8, 0)

Distance between two vertices = 2a

Distance between (-8,0) and (8,0) = 16

2a= 16

so a= 8

Vertex is (h+a,k)

we know a=8, so vertex is (h+8,k)

Now compare (h+8,k) with vertex (8,0) and find out h and k

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k =0

a minor axis of length 10.

Length of minor axis = 2b

2b = 10

so b = 5

General formula for the equation of horizontal ellipse is

$\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b} =1$

a= 8 , b=5 , h=0,k=0. equation becomes

$\frac{(x-0)^2}{8^2} + \frac{(y-0)^2}{5} =1$

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3 years ago

What is the area of the triangle?

Luda [366]

Answer:

270cm^2

Step-by-step explanation:

The side length is irrelevant and does not matter.

The area of a triangle is found by multiplying the base by the height and then dividing that by two.

For this problem it would be...

30*18=540

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So the area would be 270cm^2

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