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goldfiish [28.3K]
3 years ago
5

Help!!! ASAP!!! Many thanks!

Mathematics
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

Equation: 7+15.50x=100

People= 6

Step-by-step explanation:

7+15.50x=100

-7            = -7

15.50x    = 93

divide by 15.50= 6

15.50 times 6 = 93

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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
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PLEASE MATH HELP WILL GIVE BRAINLIEST
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write a system of linear equations in which (3,-5) is a solution of equation 1 but not a solution of equation 2 and (-1,7) is a
Ainat [17]

Answer:

Examine this system of linear equations.

y – 3x = –2,

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(2, 4)=this is the correct answer

(4, 2)

Step-by-step explanation:

thats the answer

(2,4)

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