1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serhud [2]
3 years ago
11

3^4=81. How do you write as a logarithm

Mathematics
1 answer:
Alla [95]3 years ago
5 0
The form it is currently in is called the exponential form. Which is represented with this equation: 

y = b^x

The equivalent logarithmic equation is: 
x = log_b y

Where b, is a base.
So our power becomes what the problem is equal to, the number that is being brought to that power is the base. The one on the equal sign is what we are taking the log of. So it will look like this:

4 = log_3 81 
You might be interested in
ANSWER ASAP!! Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.
Setler79 [48]

Answer:

<h2>54m²</h2>

Step-by-step explanation:

<h3>METHOD 1:</h3>

You can use the Heron's formula:

A=\sqrt{p(p-a)(p-b)(p-c)}

where

<em>p</em><em> - half of perimeter</em>

<em>a, b, c</em><em> - lengths of sides</em>

We have

a=12m;\ b=15m;\ c=9m

Calculate:

p=\dfrac{12+15+9}{2}=\dfrac{36}{2}=18\ (m)\\\\A=\sqrt{18(18-12)+(18-15)(18-9)}\\\\A=\sqrt{(18)(6)(3)(9)}\\\\A=\sqrt{2916}\\\\A=54\ (m^2)

<h3>METHOD 2:</h3>

Let's check that it is not a right triangle.

If the sum of the squares of the two shorter sides is equal to the square of the longest side, then this triangle is rectangular.

We have

9m < 12m

Check:

9^2+12^2=81+144=225\\15^2=225

This is a right trianglr wherew 9m and 12m are legs and 15m is a hypotenuse.

The formula of an area of a right triangle is:

A=\dfrac{ab}{2}

<em>a, b</em><em> - legs</em>

Substitute:

A=\dfrac{(9)(12)}{2}=\dfrac{108}{2}=54\ (m^2)

6 0
3 years ago
PLS help me if ure looking fotr branlyist
anzhelika [568]

Answer: $29

Step-by-step explanation: this is the easiest way to explain it-

20= 100%

10=50%

5=25%

10 is 50

9 is 45

8 is 40

7 is 35

6 is 30

5 is 25

3 0
3 years ago
What number should be placed in the box to help complete the division calculation? can someone please do the problem (8587/12) s
disa [49]

Answer:

8587 should be in the box

Step-by-step explanation:

we would see it question as:       12/- 8587

12 goes into 85  7 times, so 7

12 goes into 18 1 time, so 1

12 goes into 67 5 times, so 5

then the remainder is 7

or you further divide to get . 5 8 3333333...

so your answer should be 715r7 or 715.58333

5 0
3 years ago
Please help me Find x, y, and z
Evgesh-ka [11]

Answer:

X 90 z 90 y 90

Step-by-step explanation:

5 0
2 years ago
Evaluate the triple integral. 5x dv, where e is bounded by the paraboloid x = 7y2 + 7z2 and the plane x = 7. e
Mrac [35]

Convert to cylindrical coordinates:

x=x

y=r\cos\theta

z=r\sin\theta

Then E is the set of points (r,\theta,x) such that 0\le r\le1, 0\le\theta\le2\pi, and 7y^2+7z^2\le x\le7 or 7r^2\le x\le7.

Now

\displaystyle\iiint_E5x\,\mathrm dV=5\int_0^{2\pi}\int_0^1\int_{7r^2}^7xr\,\mathrm dx\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{245\pi}3}

4 0
3 years ago
Other questions:
  • Can someone plz help me?!
    13·2 answers
  • Write 4.4354 correct to 2 decimal places show working
    13·2 answers
  • Write a expression in simplest form that represents the income from w women and m men getting a haircut and a shampoo. Women hai
    6·1 answer
  • Enrique has $50. He wants to purchase a
    9·1 answer
  • Write an equation of the line parallel to x+2y=-4 through the point (-8,5)<br> show all work
    6·1 answer
  • Help. What is the slope of the line in the graph?
    13·1 answer
  • Devon pays $300 each month to get rent field space where he earns $25 per hour for giving batting lessons. Which equation repres
    11·2 answers
  • If 5 children share 152 sweets equally, how many sweets will remain?
    15·2 answers
  • ABD is an equilateral triangle. AB is ___ units long
    8·1 answer
  • How many degrees is 4​ 9 radians?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!