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Radda [10]
3 years ago
12

onsider the equation 0.5 times e4z =13 solve the equation for z. express the solution as a logarithm in base e

Mathematics
1 answer:
olga_2 [115]3 years ago
5 0

Answer:

z=\frac{ln(26)}{4}

Step-by-step explanation:

The given equation is:

0.5\,e^{4z}=13

so, we first isolate the exponential form that contains the unknown "z" in the exponent, by dividing both sides by 0.5:

0.5\,e^{4z}=13\\e^{4z}=\frac{13}{0.5}\\e^{4z}=26

Now we bring the exponent down by applying the natural log function on both sides, and then solve for "z":

e^{4z}=26\\ln(e^{4z})=ln(26)\\4\,z=ln(26)\\z=\frac{ln(26)}{4}

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21 Pounds =

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Step-by-step explanation:

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3 0
2 years ago
Find the volume of the largest rectangular box in the first octant with three faces in the coordinate planes and one vertex in t
makkiz [27]

Answer:

Step-by-step explanation:

x + 2y + 3z = 12

z=\frac{12-x-2y}{3}

Volume = V=f(x,y) = xy(\frac{12-x-2y}{3} )

find partial derivatives using product rule

f_x =\frac{y}{3} (12-2x-2y)\\f_y = \frac{x}{3} (12-x-4y)

i.e.

Using maximum for partial derivatives, we equate first partial derivative to 0.

y=0 or x+y =6

x=0 or x+4y =12

Simplify to get y =2, x = 4

thus critical points are (4,2) (6,0) (0,3)

Of these D the II derivative test gives

D<0 only for (4,2)

Hence maximum volume is when x=4, y=2, z= 4/3

Max volume is = 4(2)(4/3) = 32/3

6 0
3 years ago
A triangle has angle measurements of 53°, 27°, and 100°. What kind of triangle is it?
Artist 52 [7]

Answer:

Step-by-step explanation:

It's an obtuse.  A triangle is considered acute if all 3 angles are acute; it is considered obtuse if one of its angles is obtuse.  Ours has a 100 degree angle, so it is obtuse.

4 0
3 years ago
On a team, 8 girls and 7 boys scored a total of 128 points. The difference between the number of points scored by the eight girl
andriy [413]

Answer:

8

Step-by-step explanation:

128-16=112

112÷15(boys+girls)=7.4666666

7.4666666 rounds to 8

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3 years ago
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