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3 years ago

Let f(x)=8secx. Then f′′(π/9)

Mathematics

1 answer:

Ahat [919]3 years ago

7 0

f(x)=secx.

f'(x)=sec x tan x.

Use the product rule to find f ' '(x).

F ' '(x)=(secxtanx)tanx+secx(sec2x).

So, f ' '(x)=secxtan2x+sec3x.

Evaluate:f ' '(π4)=sec(π4)tan2(π4)+sec3(π4)=(√2)(1)2+(√2)3=√2+2√2=3√2.

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Vannesa earns a base salary of $400 every week with an additional 5% commision on everything else sells. Vannesa sold $1650 worh

Alex73 [517]

Answer:

482.5

Step-by-step explanation:

$1,650*0.05=82.5\\400+82.5=482.5$

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3 years ago

7/5 + 2/3 - 1 = ayuda porfa

brilliants [131]

Answer:

$1\frac{1}{15}$

Step-by-step explanation:

$\frac{7}{5}+\frac{2}{3}-1\\$

Convertir elemento a fracción: 1 = 1/1

$=-\frac{1}{1}+\frac{7}{5}+\frac{2}{3}$

Mínimo común múltiplo de 1,5,3 = 15

Ajustar fracciones según el mcm

$=-\frac{15}{15}+\frac{21}{15}+\frac{10}{15}$

Dado que los denominadores son iguales, combine las fracciones:

$\frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}\\\\= \frac{-15+21+10}{15}\\\\$

Sumar Restar los números: -15 + 21 + 10 = 16

$=\frac{16}{15}\\\\16\div 15 = 1 \: remainder 1\\\\=1\frac{1}{15}$

4 0

3 years ago

HELP ASAP PLSSS

pogonyaev

Answer:

complementry and ajaecent

Step-by-step explanation:

complementry because they add up to 90 and ajecent cause they are next to each other

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3 years ago

8x - 6x + 1 = 11<br>Please explain your work!<br>Thank you!

Vesnalui [34]

Answer:

x = 5

Step-by-step explanation:

8x - 6x + 1 = 11

Add 6x to each side (because the 6 is negative)

8x + 1 = 11 - 6x

Subtract 1 from each side (because the 1 is positive)

8x = 10 - 6x

Subtract 6x from 8x

2x = 10

Divide by 2

x = 5

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3 years ago

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storchak [24]

Answer:

O-2(x+5)

Step-by-step explanation:

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3 years ago

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