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amid [387]
3 years ago
12

WILL MARK BRAINLIEST PLEASE ANSWER

Mathematics
2 answers:
Artemon [7]3 years ago
6 0

Answer:

no

Step-by-step explanation:

hey

Citrus2011 [14]3 years ago
6 0
Omg no way I don’t get it if u get the answer lmk
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What is the sum 2/6+7/6
galben [10]
9/6 or the simplified version is 1 1/2
6 0
3 years ago
Read 2 more answers
In a group of 40 people, 35% have never been abroad. Two people are selected at random without replacement and are asked about t
Alisiya [41]

Answer:

\frac{7}{60}

Step-by-step explanation:

Given that in a group of 40 people, 35% have never been abroad. Two people are selected at random without replacement and are asked about their past travel experience.

Since the two are drawn without replacement the first trial affects the second trial.  In other words, each trial is not independent of the other.

a) Hence this cannot be binomial experiment.  The reason is p=probability for each trial is not constant as first draw affect the probability for Ii draw

b) The probability that in a random sample of 2, no one has been abroad

=Prob of selecting both people from the group where no one has been abroad

We have in the group 35% i.e. 14 people never been to abroad

So required probability = Prob of selecting both from 14 people

=\frac{14C2}{40C2} \\=\frac{14*13}{40*39} \\=\frac{7}{60}

3 0
3 years ago
Please help with number 1
Finger [1]
Since the angles are equal, the sides will be equal. Set 19=3x-2 and solve. Add 2 to both sides and get 3x=21, divide both sides by three and x=7.
4 0
3 years ago
The speed of a car was recorded in 6-minute increments between 3:00 p.m. and 4:00 p.m. The data is displayed in this table. (see
IrinaVladis [17]

Answer:

C

Step-by-step explanation:

½ × (1/10) × [58 + 2(59+61+62+65+68+65+64+61+60) + 59]

0.05(1247)

62.35 m

7 0
4 years ago
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
4 years ago
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