2 years ago

PLEASE HELP

Mathematics

1 answer:

vladimir1956 [14]2 years ago

5 0

Answer:

False

Step-by-step explanation:

[If two lines are perpendicular, then the lines intersect to form four right angles] It's true up till here, but a right angle is 90 degrees, not 180 degrees

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There are men and women at a meeting.

pav-90 [236]

Answer:

men+women=

women=42

60%=42

40%=

40*42

=28

men=28

42+28

=70 people were in the meeting

Step-by-step explanation:

7 0

3 years ago

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1.688 × 10⁴ = write in standard format

Neporo4naja [7]

Answer

16880

Step-by-step explanation:

10x10x10x10=10,000

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3 years ago

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5x + 2 = 22 plzzzzzz hellpppp

Mamont248 [21]

Answer:

x=4

Step-by-step explanation:

subtract 2 from both sides---

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3 years ago

Find the sum of the convergent series 7 0.7 0.007

mafiozo [28]

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Let $S_n$ denote the $n$ th partial sum of the series, i.e.

$S_n=1+\dfrac1{10}+\dfrac1{100}+\cdots+\dfrac1{100^n}$

Then

$\dfrac1{10}S_n=\dfrac1{10}+\dfrac1{100}+\dfrac1{1000}+\dfrac1{10^{n+1}}$

and subtracting from $S_n$ we get

$S_n-\dfrac1{10}S_n=\dfrac9{10}S_n=1-\dfrac1{10^{n+1}}$
$\implies S_n=\dfrac{10}9\left(1-\dfrac1{10^{n+1}}\right)$

As $n\to\infty$ , the exponential term vanishes, leaving us with

$\displaystyle\lim_{n\to\infty}S_n=\dfrac{10}9$

and so

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3 years ago

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yan [13]

1 km every 3 minutes

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3 years ago