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3 years ago

If two lines in space do not intersect the lines must be parallel

Mathematics

2 answers:

n200080 [17]3 years ago

4 0

False. they could be skew

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steposvetlana [31]3 years ago

4 0

They will be skew and Not true

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mel-nik [20]

Answer:

The answer to 36 is -18

Step-by-step explanation:

x=-18 because 3×(-6)=(-6×-6) cancels

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3 years ago

Employees were asked how many times per week they exercised. The frequency table shows the results of the survey.

wlad13 [49]

Answer:

See explanation

Step-by-step explanation:

Given the frequency table

$\begin {array}{cccccccccc}\text{Number}&0&1&2&3&4&5&6&7&8\\ \\\text{Frequency}&5&10&2&9&33&12&15&3&1\end{array}$

a) The total sum is

$5+10+2+9+33+12+15+3+1=90$

Create a probability distribution table

$\begin {array}{cccccccccc}\text{Number}&0&1&2&3&4&5&6&7&8\\ \\\text{Probability}&\dfrac{5}{90}&\dfrac{10}{90}&\dfrac{2}{90}&\dfrac{9}{90}&\dfrac{33}{90}&\dfrac{12}{90}&\dfrac{15}{90}&\dfrac{3}{90}&\dfrac{1}{90}\end{array}$

b) The probability

$P(x$

c) The probability

$P(x=6)=\dfrac{15}{90}=\dfrac{1}{6}$

d) The probability

$P(x\ge 5)=P(x=5)+P(x=6)+P(x=7)+P(x=8)=\dfrac{12}{90}+\dfrac{15}{90}+\dfrac{3}{90}+\dfrac{1}{90}=\dfrac{31}{90}$

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4 years ago

Find the sum: (b-<br> 6) + (-6b - 5)

ivolga24 [154]

Answer:

-5b -1

Step-by-step explanation:

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3 years ago

7 less than two times the sum of 6 and a

miss Akunina [59]

Answer:

6 and 20

Step-by-step explanation:

20-7=13

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4 years ago

Alligators lay between 20 and 50 eggs in a nest. A park ranger in Everglades national park counted the number of eggs in 28 nest

zlopas [31]

40×28= the answer is 1,120 eggs that he counted

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3 years ago