Solve each log equation for real solutionslogx 81 =2

Answers

Answer 1

Answer:

x=9

Step-by-step explanation:

You would change it to x^2 = 81 which is 9.

Answer 2
x=9. The log value is the same as the base in exponential form and the value on the opposite side of the equal sign is the exponent. So you can rewrite the equation as, x^2=81. 9^2=81 so x=9

Related Questions

Hanako is putting up a fence around their rectangular yard. The fence will be 15 yards long and 6 yards wide. What is the area of Hanako's fence, in square yards?

Answers

Answer:

90 Square Yards

Step-by-step explanation:

To find the area of a rectangle, all you do is multiply the length by the width.

in your equation, the length is 15 and the width is 6.

And 15 x 6 = 90, so the answer is 90 Square Yards.

On a winter day in the Midwest, the temperature got colder than 5 degrees below zero when measured in degrees Fahrenheit. Which of these inequalities correctly represents the temperature? For each inequality, assume that x is the temperature and that the constant is the number of degrees Fahrenheit. (No links.)
A
x<−5

B
x>−5

C
x<5

D
x>5

Answers

Answer:

A

Step-by-step explanation:

The question asks us what equation would represent a temperature less than -5. The answer must then be A.

Answer:

The answer is A. x<-5

Step-by-step explain:

So the question is On a winter day in the Midwest, the temperature got colder than 5 degrees below zero when measured in degrees Fahrenheit. Which of these inequalities correctly represents the temperature? Basically It is simple you have  to figure out which inequality accurately represents the temperature. What u can do is imagine x is the temperature and the 5 is the number that way it will be way easier to figure out!!!! MARK ME AS BRAINLEIST PLS??  

 

Are the two Rectangles congruent? How do you know?

A. No, Sides are diffrent length and do not have a corresponding part.
B. Yes, each side and each angle has a congruent corresponding part. ​

Answers

Yes each side and each angle has a congruent corresponding part

please helpp 10 points and brainlyist if you are right.Thanks

Answers

Answer:

58

Step-by-step explanation:

Johnny flipped a coin 450 times. His results are:

Heads: 240
Tails: 210

What is the experimental probability that the coin lands on heads?

Please help

Answers

The answer is 8/15. Hopefully this helped

is any body board because i am:(

Answers

frl this place is boring

Correct spelling is “bored”

But yes I am too

Determine the modulus of each of the complex numbers in the matching pairs. List these moduli in order from smallest to largest. Use the letters of the matching pair in your listing.

Suppose m = 2 + 6i, and |m + n| = 3√10 , where n is a complex number.

a. What is the minimum value of the modulus of n?

√10

Provide one example of the complex number, n.



A = J → 2 + 6i

B = F →75

C = H → -3 - i

D = I → 1 + i

E = G → 5 + 5i

these are my matching pairs

Answers

Answer:

the modulus of a complex number z = a + bi is:

Izl= √(a²+b²)

The fact that n is complex does not mean that n doesn't has a real part, so we must write our numbers as:

m = 2 + 6i

n = a + bi

Im + nl = 3√10

√(a² + b²+ 2²+ 6²)= 3√10

√(a^2 + b^2 + 40) = 3√10

squaring both side

a²+b²+40 = 3^2*10 = 9*10 =90

a²+b²= 90 - 40

a²+b²=50

So,

|n|=√(a^2 + b^2) = √50

The modulus of n must be equal to the square root of 50.

now

values a and b such

a^2 + b^2 = 50.

for example, a = 5 and b = 5

5²+5²=25+25= 50

Then a possible value for n is:

n = 5+5i

Let n be x+yi

So

√(a²+b²+2²+6²)=3√10√a²+b²+40=3√10a²+b²+40=90a²+b²=50

Minimum value is 5+5i as 5²+5²=50

Which polynomial is a perfect square trinomial?
36x2 − 18x − 9


4a2 − 28a − 49


25b2 − 40b + 16


4x2 − 6x + 9

Answers

Answer:

The third one

Step-by-step explanation:

The process would be figuring out the square root of the first and last term of each equation, after doing so, you would take that number (square root of first and last number) then you do 2(a)(b) which would be which should be the middle term. In this case 2(5)(4) = 40 which is correct.

Step-by-step explanation:

my calculator got 36x*2-18-27/4

Geometry please help.

Answers

Answer:

CD = 16

Step-by-step explanation:

We can see that both AC and AB are radii. This means that they are equal, so AC = AB = 17. From segment addition postulate we can say AB = AE + BE

We are given BE, and we found the length of AB, so we can substitute and solve for AE:

AB = AE + BE

17 = AE + 2

AE = 15

Since we are given that AB is perpendicular to CD, ∠AEC would be a right angle, making ΔAEC a right triangle.

Now, we can use the pythagorean theorem to find the length of CE.

a^2 + b^2 = c^2

We are given the hypotenuse, c or AC in this case, and one leg, b, or AE in this case. We can plug in the values we are given:

CE^2 + AE^2 = AC^2

CE^2 + 15^2 = 17^2

CE^2 + 225 = 289

CE^2 = 64

CE = 8

Now, if a chord is perpendicular to a radius(AB in this case) we can say that it is split in half by the radius. This is basically saying that CE = DE = 8.

Again, using segment addition postulate, we can say:

CE + DE = CD

CD = 8 + 8

CD = 16

32. A data set is normally distributed
with mean 18 and standard
deviation 2.7. Approximately what
percent of the data are greater
than 14?
(A) 0.7%
(B) 6.9%
0.9%
D 93.1%

Answers

Answer:

93.1%

Step-by-step explanation:

Nancy and Fabian’s dinner bill at a restaurant is $28 before tax. The tax on their meal is 2.5%.

How much is Nancy and Fabian’s final bill after tax is added?

Answers

Answer:

gtbhytyt4ff5ddtd56cc6c6c6c6f6c66ffb

The amount that Nancy and Fabian’s final bill after tax is added will be $28.70.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Nancy and Fabian’s dinner bill at a restaurant is $28 before tax. The tax on their meal is 2.5%.

Let "T" be the final bill. Then the equation is given as,

2.5% = [(T - $28) / $28] x 100

0.025 = (T - $28) / $28

T - $28 = $0.70

T = $28.70

The amount that Nancy and Fabian’s final bill after tax is added will be $28.70.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

how do I solve this?​

Answers

Answer:

The final answer is (2,-1)

(also idek what I did in the photo but I'm positive the answer is (2,-1)

simplify 3²×5² what is the answer​

Answers

Answer:

9.25=225

Step-by-step explanation:

Can You teach english and math

Volume (look at the picture)

Answers

Answer:

192 is the volume

Step-by-step explanation:

Answer:

192 cubic (measurement you are using)

Step-by-step explanation:

Formula for the volume of a pyramid is length of base times width of height times the height of the pyramid all over 3 so it would be 8x8x9 all over 3 which is 576, and 576 divided by 3 is 192

(add. write your answer as a fraction, as a whole or as a mixed number)
PLEASE HELP . WILL GIVE BRAINLIEST !

Answers

Answer:

3 and 1/12

Step-by-step explanation:

hope this helps! :)

Eva draws a line that includes the points (2,0) and (-2,2) which function gives all the points (٫) on this line

Possible answers

= -1/2 + 1

= -2 +1

= 1/2 -1

= 2 -1

Answers

Given:

A line passes through the points (2,0) and (-2,2).

To find:

The equation of the line.

Solution:

If a line passes through the two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex], then the equation of the line is:

[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

The line passes through the points (2,0) and (-2,2). So, the equation of the line is:

[tex]y-0=\dfrac{2-0}{-2-2}(x-2)[/tex]

[tex]y=\dfrac{2}{-4}(x-2)[/tex]

[tex]y=-\dfrac{1}{2}(x-2)[/tex]

[tex]y=-\dfrac{1}{2}(x)-\dfrac{1}{2}(-2)[/tex]

[tex]y=-\dfrac{1}{2}x+1[/tex]

Therefore, the required equation is [tex]y=-\dfrac{1}{2}x+1[/tex].

Note: In the options, the variables are missing.

What is the volume of a sphere with a diameter of 9.3 m, rounded to the nearest
tenth of a cubic meter?

Answers

The volume of a sphere with a diameter of 9.3 is 521.

what is Volume of sphere?

The amount of space occupied by a three-dimensional figure as measured in cubic units.

Volume of sphere is = 4/3*π*r³

d=9.3, radius= 9.3/2

Volume of sphere = 4/3*22/7*4.65*4.65*4.65*4.65

                               = 421.16 m³

                                = 521

Learn more about volume of cylinder here:

brainly.com/question/16134180

#SPJ2

If a bag contains 12 apples, 4 bananas, and 8 oranges, what is the part-to-whole ratio bananas to all fruit?

Answers

Answer:

4:24

Step-by-step explanation:

12 + 4 + 8 = 24 and there are only 4 bananas. So, the answer is 4:24

hope that helps!!

Answer: 1 : 6

Step-by-step explanation: 4 over 24 equals 1/6th or 1:6 .

can someone please help its my 2 to last one

Answers

Answer:

x= -7 because when you add 60+45+82 you get 187. The interior angles of a triangle add up to 180

Step-by-step explanation:

The diameter of a circle is 20 m. Find its area in terms of π

Answers

Answer:

100π m^2

Step-by-step explanation:

Given data

Diameter= 20m

Radius= 10m

The expression for the  area is

Area= πr^2

Area= π*10^2

Area= π*100

Area= 100π m^2

Hence the area is 100π m^2

Find the length of the boldest arc. Rounded answer to the nearest hundredth (use 3.14 for pie)​

Answers

Answer:
8π yards
Step-by-step explanation:
A circle subtends a total angle of 360 ° from its center.The length of an arc is directly proportional to the angle it subtends from the circle's center. The arc's length can therefore be calculated as:
C=πd=2πr
Where C is circumference, d is diameter and r is radius. Given r as 16 yards then the arc length which is equivalent to circumference is given as

Please help me with this thx need soon

Answers

Answer:

A) x = 7

Step-by-step explanation:

7x + 1 + 7x + 6 + (180° - 15x) = 180°

14x + 7 + 180° - 15x = 180°

combine like terms:

-x = -7

x = 7

what is the square root 55 explanation plzz​

Answers

The principal, real, root of:

[tex]\sqrt[2]{55}[/tex] =7.41619849

Pls help is it; (1.5, 2) or no solution

Answers

Answer:

no solution?

Step-by-step explanation:

Can someone tell me the answer for 7.05 x 9.4

Answers

66.27 is the answer

Answer:

[tex]{\huge\purple{\fbox{{࿐αɴѕωєя࿐}}}}[/tex]

[tex]7.05 \times 9.4 \\ = 66.27[/tex]

Reflect the function f(x)=x^4 about the x-axis and translate it 3 units to the left to produce g(x). A. G(x)=-x^4+3 B. G(x)=-x^4-3 C. G(x)=-(x-3)^4 D. G(x)=-(x+3)^4

Answers

Answer:(d)

Step-by-step explanation:

Given

Function is [tex]f(x)=x^4[/tex]

If it is reflected about the x-axis it becomes [tex]-x^4[/tex]

To shift it 3 units to the left it becomes

[tex]-(x+3)^4[/tex]

option (d) is correct

This is shown in the figure below

The slating palace charges a $6.00 shoe rental fee plus $2.00 an hour to skate.Mathland skating rink charges $4.00 an hour to skate . what equation represents situation on;the skating palace

Answers

Answer:

Equation for the skating palace

= 6 + 2x

Step-by-step explanation:

Let the number of hours = x

For skating palace, the equation is written as:

The slating palace charges a $6.00 shoe rental fee plus $2.00 an hour to skate.

$6 + $2 × x

= 6 + 2x

For Mathland , the equation is written as:

Mathland skating rink charges $4.00 an hour to skate .

$4 × x

= 4x

Therefore, the equation that represents the situation on the skating palace is :

6 + 2x

If sin 52° = 0.788, what is the approximate value of

cos 38°?

No link pls

Answers

Answer:

0.788

Step-by-step explanation:

Sin 52° = 0.788

Therefore

Cos 38° Is 0.788

The approximate value for 38° is 0.788

The midpoint of AB is M(0,3). If the coordinates of A are (4, -1), what are the
coordinates of B?
Answer:
Submit Answer
attempt 1 out of 2

Answers

The coordinates of B are (-4, 7).

math question please help

Answers

Answer:

12 days, 72 tickets

Step-by-step explanation:

the x coordinate of the vertex (aka the number of days it takes to peak) is equal to -b/2a, where b is the coefficient of the second term and a is the coefficient of the first term. That is equal to -9.6/2*-0.4 = 12.

plug 12 in for x to get -0.4*12^2+9.6*12+14=71.6, which rounds to 72.

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