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3 years ago

10

Given C=7 What is the diameter and what would the number look like rounded to the nearest hundredth

1 answer:

S_A_V [24]3 years ago

3 0

C is circuit ?

C = 2 π r
d = 2 r

d/2 = r

C = 2 π d/2

C = π d

d = C/π

d = 7/3.14 = 2.23

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I Need Help Please with this problem

goldenfox [79]

ΔACD is similar to ΔBCD by AA similarity theorem

AD/AC = BD/BC

x/5 = 4.2/6

6x = 21

x = 3.5

Hope this helps! ;)

3 0

3 years ago

A sculptor is selling her work at an exhibit and hopes to earn at least $31,000 in revenue. Small pieces go for $780 and large p

Sauron [17]

The answer should be

780x + 1500y=31000

please correct me if i'm wrong

3 0

3 years ago

Read 2 more answers

ln(y+1)-lny=1+3lnx . Express y in terms of x, in a form not involving logarithms. (4 marks, Maths CIE A level)

Delicious77 [7]

$remember$
$ln(x)=log_e(x)$
$and$
$log_x(a)-log_x(b)= log_x( \frac{a}{b} )$
$and$
$log_a(b)=c$ means $a^c=b$
$and$
$blog(a)=log(a^b)$

$so$

$ln(y+1)-ln(y)=1+3ln(x)$
$ln( \frac{y+1}{y} )=1+ln(x^3)$

$minus$ $ln(x^3)$ $from$ $both$ $sides$

$ln( \frac{y+1}{y}-ln(x^3) )=1$
$ln( \frac{y+1}{yx^3})=1$
$log_e( \frac{y+1}{yx^3})=1$

$translate$

$e^1=\frac{y+1}{yx^3}$
$e=\frac{y+1}{yx^3}$

$times$ $both$ $sides$ $by$ $yx^3$

$eyx^3=y+1$

$minus$ $y$ $from$ $both$ $sides$

$eyx^3-y=1$
$y(ex^3-1)=1$

$divide$ $both$ $sides$ $by$ $(ex³-1)$

$y= \frac{1}{ex^3-1}$

6 0

3 years ago

Read 2 more answers

Determine if the number is a whole number, integer, or rational number. Select all sets to which the number belongs.

agasfer [191]

Answer:

Rational,integer

Step-by-step explanation:

7 0

3 years ago

What is the value of 110% of 1/2 of 1/4 of 64.

Alex787 [66]

Step-by-step explanation:

110/1000*1/2*1/4*64/1

110*1*1*64=7040

1000*2*4*1=8000

7040/8000

704/800

3 0

3 years ago