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
harkovskaia [24]
3 years ago
15

(UFRGS) Se 10x = 20y , atribuindo 0,3 para log2, então o valor de é

Mathematics
1 answer:
sveticcg [70]3 years ago
4 0

Answer:

\frac{x}{y}=1.3

Step-by-step explanation:

<u>Informação recuperada:</u>

(UFRGS) Se 10x = 20y , atribuindo 0,3 para log 2 , então o valor de x/y é

1) Primeiro, passando o 10 para o 2º membro como base do logaritmo:

10x=20y \Rightarrow x=log_{10}20y

2) Aplicando a propriedade do produto de logaritmo:

log(AB)= logA+logB

x=log_{10}20y \Rightarrow x=log(2+10)y\Rightarrow x=(0.3+1)y \Rightarrow x=1.3y

3)  Como quero o quociente divido ambos os lados por y

\frac{x}{y}=\frac{1.3y}{y}\Rightarrow \frac{x}{y}=1.3

You might be interested in
Which of the following data sets has the mean, median, mode, and range as the same number?
I am Lyosha [343]

Answer:

A.

Step-by-step explanation:

6, 11,14,14,19,20

Adding these 6 numbers we get  84.

84 / 6 = 14 = mean.

Median =  middle number(s) = 14

Mode = number occurring most = 14.

5 0
2 years ago
Help me plssss <br> its for a math test and im braindead atm
Gwar [14]

Answer:

5/8

Step-by-step explanation:

3/8 + 1/4

To add these fractions, you need a lowest common denominator.  Both 4 and 8 "go into" 8, so the lowest common denominator is 8.

In order to change the denominator 4 to 8, you need to multiply both the numerator and the denominator by 2.  So, 1/4 becomes 2/8.

Now, the problem is 3/8 + 2/8.  

You can add the numerators, because the denominator is the same for each fraction.

3/8 + 2/8 = 5/8

5 0
3 years ago
Read 2 more answers
Can someone answer this please<br> Questions 19 and 21
Olegator [25]

Answer:

Wind speed

Another very old approach to measure wind speed is through the use of a pressure tube

Microbars per second

Earthquake intensity

The currently accepted method is the moment magnitude scale, which measures the total amount of energy released by the earthquake.

The Richter scale is used to determine the intensity of earthquakes

Step-by-step explanation:

3 0
3 years ago
A right cone has a surface area of 440 square inches and a radius of 7 inches. Find its slant height.
EastWind [94]

Answer:

Surface Area of right cone  

               =\pi r(r+\sqrt{h^2 + r^2}

440 = \pi *7*(7+\sqrt{h^2+7^2})\\\\440 = 7\pi (7 + \sqrt{h^2+7^2})\\\\\frac{440}{7\pi } = 7 + \sqrt{h^2+49}\\\\\frac{440}{7\pi } - 7 = \sqrt{h^2+49}\\\\\frac{440-49\pi}{7\pi} =\sqrt{h^2+49}\\\\

\frac{286.062}{21.99} =\sqrt{h^2+49}\\\\13.0087= \sqrt{h^2+49}\\\\(13.0087)^2 = (\sqrt{h^2+49})^2\\\\169.227 = h^2 +49\\\\169.227 - 49 =h^2\\\\120.227 = h^2\\\\h = \sqrt{120.227}  = 10.96in

7 0
2 years ago
Can someone please solve FAST I have 5 minutes
Hunter-Best [27]

Answer:

no time left sorry

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What is the range of the function g(x)=4x−5 when the domain is {-1, 0, 2}?
    15·2 answers
  • If g(x) = <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx-7%7D%20" id="TexFormula1" title=" \sqrt{x-7} " alt=" \sqrt{x-7} " ali
    6·1 answer
  • What what is the date of the snow on Cherry Street after three hours?
    5·1 answer
  • A car needs fixing and Abe can fix it for $70 per hour with a $130 part, but Gabe can fix it for $80 an hour with a $40 part.How
    15·1 answer
  • Find the value of x in each parallelogram.
    8·1 answer
  • Identify the slope and y-intercept of the graph of the equation.
    14·2 answers
  • A bag contains red and green marbles of equal size. There are more red marbles than green marbles in the bag. A marble is chosen
    7·1 answer
  • Can someone help me do this darn work plz
    15·2 answers
  • your birthday is coming up and your parents said you could invite your friends to a concert by your favorite band. ticket prices
    15·2 answers
  • if the width of a football field is (x-3) and the length is (4x-3), what is the area? need before 1:40 on 3-19-2021
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!