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cestrela7 [59]
3 years ago
15

PLEASE HELP

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
The answer is d to that
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Name a fraction with a decimal value between 1/2 and 3/4. Express both the fraction and the equivalent decimal.
balandron [24]
That would be 5/8
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3 years ago
At Denver International Airport, 86% of recent flights have arrived on time. A sample of 11 flights is studied. What is the vari
notsponge [240]

Answer:

s^2=1.32

Step-by-step explanation:

-This is a binomial probability distribution problem.

-Given that p=0.86 and n=11, the sample variance can be calculated using the formula:

\sigma^2=np(1-p)

#We substitute the given parameters in the formula to solve for variance:

\sigma^2=np(1-p)\\\\\\=11\times 0.86(1-0.86)\\\\=1.324\approx1.32

Hence, the sample variance is 1.32

5 0
3 years ago
Simplify - tanx-(sec^2 / tanx)
Mashcka [7]

Answer:

-cot(x)

Step-by-step explanation:

tanx-(sec^2x  / tanx)

Lets get a common denominator of tan

tan x * tan x/ tan  -sec ^2 x/ tan x

tan ^2 x - sec ^2 x

---------------------------

tan x

We know than sec^2 - tan^2 =1  (trig identity)  so factor out -1

-1(-tan ^2 x + sec ^2 x)

---------------------------

tan x

-1(1)

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tan x

-1

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tan (x)

We know  1/ tan x = cot (x)

- cot(x)

7 0
3 years ago
A store pays $675.58 for a rowboat. The store marks up the price by 10%. What is the amount of the mark-up? Round your answer to
Ne4ueva [31]

Answer:

743.1

Step-by-step explanation:

675.58 • 1.10 = 743.138

743.138 rounded to the nearest tenth is 743.1.

6 0
3 years ago
Which mathematician is not known as a contributor to projective geometry?
gizmo_the_mogwai [7]
<span>Desargues Pythagoras Pappus is the answer i think</span>
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3 years ago
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