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Evgesh-ka [11]
3 years ago
9

Melanie asked 15 random seventh-grade students how many soccer games they attended this school year. The number of games attende

d by each student is listed below. 2, 3, 6, 4, 7, 0, 4, 5, 0, 1, 2, 3, 2, 1, 4 What is the ratio of the total number of surveyed students who attended soccer games to the total number of students surveyed? StartFraction 2 over 15 EndFraction StartFraction 2 over 13 EndFraction StartFraction 13 over 15 EndFraction StartFraction 13 over 2 EndFraction
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
5 0

Answer:

13:15

Step-by-step explanation:

i just took the test

Burka [1]3 years ago
3 0

Answer:

Step-by-step ex: 13:15

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If an airplanes speed is 850mi/h what is it’s speed in m/s
Blizzard [7]

we are given

speed is 850mi/h

we know that

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1 hour = 3600 second

now, we can replace 1mi and 1hour

850mi/h=850*\frac{1609.34}{3600} m/s

now, we can solve it

379.98306

850mi/h=379.98306 m/s...........Answer

7 0
3 years ago
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Find all unit vectors that are orthogonal to the vector u = 1, 0, −4 .
KIM [24]

Answer:

Step-by-step explanation:

Given:

u = 1, 0, -4

In unit vector notation,

u = i + 0j - 4k

Now, to get all unit vectors that are orthogonal to vector u, remember that two vectors are orthogonal if their dot product is zero.

If v = v₁ i + v₂ j + v₃ k is one of those vectors that are orthogonal to u, then

u. v = 0                    [<em>substitute for the values of u and v</em>]

=> (i + 0j - 4k) . (v₁ i + v₂ j + v₃ k)  = 0               [<em>simplify</em>]

=> v₁ + 0 - 4v₃ = 0

=> v₁ = 4v₃

Plug in the value of v₁ = 4v₃ into vector v as follows

v = 4v₃ i + v₂ j + v₃ k              -------------(i)

Equation (i) is the generalized form of all vectors that will be orthogonal to vector u

Now,

Get the generalized unit vector by dividing the equation (i) by the magnitude of the generalized vector form. i.e

\frac{v}{|v|}

Where;

|v| = \sqrt{(4v_3)^2 + (v_2)^2 + (v_3)^2}

|v| = \sqrt{17(v_3)^2 + (v_2)^2}

\frac{v}{|v|} = \frac{4v_3i + v_2j + v_3k}{\sqrt{17(v_3)^2 + (v_2)^2}}

This is the general form of all unit vectors that are orthogonal to vector u

where v₂ and v₃ are non-zero arbitrary real numbers.

3 0
3 years ago
Liz ran 4/5 km on Monday and 56 KM on Tuesday  about how much did she run?
Dimas [21]

Answer:

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Step-by-step explanation:

4/5+56 =56.8

very sorry if this is wrong

3 0
2 years ago
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The basketball team consists of 1 freshman, 2
marishachu [46]

Answer:

0.4

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Answer:

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2 years ago
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