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podryga [215]
3 years ago
14

Change y=e^(-x^2) to x=

Mathematics
1 answer:
11111nata11111 [884]3 years ago
7 0
\bf y=e^{-x^2}\impliedby \textit{let's take \underline{ln} to both sides}\\\\
-------------------------------\\\\
\textit{Logarithm Cancellation Rules}\\\\
log_{{  a}}{{  a}}^x\implies x\qquad \qquad 
{{  a}}^{log_{{  a}}x}=x\\\\
-------------------------------\\\\
ln(y)=ln(e^{-x^2})\iff log_e(y)=log_e(e^{-x^2})\implies log_e(y)=-x^2
\\\\\\
-ln(y)=x^2\implies \sqrt{-ln(y)}=x
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A family has two cars. The first car has a fuel efficuency of 15 miles per gallon of gas and the second has a fuel efficiency of
SVEN [57.7K]

Answer:

x= 35 gallons consumed by 1st car

and y= 40  gallons consumed by 2nd car

Step-by-step explanation:

Fuel efficiency of 1st car = 15 miles per gallon

Fuel efficiency of 2nd car = 35 miles per gallon

Let x= gallons consumed by 1st car

and y= gallons consumed by 2nd car

Total gallons consumed by both cars = 75

so, we can write

x + y = 75

Miles covered by both cars = 1925 miles

and we know, Fuel efficiency of 1st car = 15 miles per gallon

Fuel efficiency of 2nd car = 35 miles per gallon

we can write the equation as

15 x + 35 y = 1925

where x and y are gallons consumed by 1st and 2nd car.

We have two equation now,

x + y = 75                   (1)

15 x + 35 y = 1925     (2)

Multiplying eq(1) with 15 and subtracting eq (1) and 2

15 x + 15 y = 1125

15 x + 35 y = 1925

-       -            -

_______________

0 - 20 y = -800

y= -800 / -20

y = 40

Putting value of y in equation 1

x + y = 75

x + 40 = 75

x= 75 - 40

x = 35

x= 35 gallons consumed by 1st car

and y= 40  gallons consumed by 2nd car

4 0
3 years ago
I DID NOT MEAN TO POST
Nataliya [291]
Okie thank you you you
6 0
3 years ago
If a bucket holds 2 2/4 gallons of water. And the bucket is 5/8 full. how full is the bucket
s344n2d4d5 [400]

Multiply 2 2/4 by 5/8.

First, simplify 2 2/4 to 2 1/2.

Then, convert to improper form (5/2).

5/2 x 5/8 = 25/16

answer: 1 9/16 gallons of water

8 0
3 years ago
b In a hostel. 50 students have food enough for 54 days. How many students should be added in de the hostel so that the food is
lys-0071 [83]
Everybody will one thing a day
6 0
3 years ago
1/8 +c= 4/5 what does c equal ​
Ray Of Light [21]

Answer:

c=27/40 = 0.675

Step-by-step explanation:

the statement give us the expression:

1/8 +c= 4/5

we subtract the term "1/8" both sides:

we have:

1/8 -1/8+c= 4/5-1/8

c=4/5-1/8

c=(4*8)-(5*1)/(5*8)

c=(32-5)/(40)

c =27/40 = 0.675

7 0
3 years ago
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