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ira [324]
3 years ago
10

What is the value of x in the equation 1/5x – 2/3y = 30, when y = 15?

Mathematics
1 answer:
WINSTONCH [101]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Providing it is written as 1 * x / 5 - 2*y / 3 = 30, it can be solved this way.

x/5 - 2*15/3 = 30

x/5 - 10 = 30  

x/5 = 30 + 10

x/5 = 40

(x/5)*5 = 40*5

x = 200

Answer D

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What is the value of x in the equation below?
belka [17]
remember
ln(a^b)=bln(a)
ln(e)=1
so
ln(e^x)=xln(e)=x


1+2e^{x+1}=9
minus \space\ 1 \space\ both \space\ sides
2e^{x+1}=8
divide \space\ both \space\ sides \space\ by \space\ 2
e^{x+1}=4
take \space\ ln \space\ of \space\ both \space\ sides
ln(e^{x+1})=ln(4)
(x+1)ln(e)=ln(4)
x+1=ln(4)
minus \space\ 1 \space\ from \space\ both \space\ sides
x=ln(4)-1
answer \space\ is \space\ C=ln(4)-1
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