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3 years ago

How to solve this equation-1/3m-7=5

2 answers:

6 0

Hmm, lets see what we're working on here

If were solving for the value of "m" follow these following steps (only if you want to )

1/3(m) - 7 - 5 = ?

? = 0

Lets simplify ▶1/3 to find out the value of it

0 - 1/3 (m) - 7 - 5 = ?

7(3) / 3

'm' becomes a negative since we started out with a negative fraction

-m - 7(3) /3
Next: -m - 21 / 3 - 5 = ?

5(3) / 3
This because the denomenator as 3

-m - 36 / 3

Your like terms of this part of the problem ⬇
-1 (m) + 36
So, -m - 36 / 3 = ?

This part of the equation/steps will be too long to finish up

-m - 36 = ?

If we are the number 36 from each of your sides you will get your answer. Here's the solution I am talking about ⬇

-m - 36 = 0

If we multiply by the negative 1 (-1) we can still find your result for the value of 'm'

Now, finally we have found the value of 'm' which is -36 ; m= -36

Brilliant_brown [7]3 years ago

4 0

-1/3 m = 5+7
-1/3m=12
m= -36

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Find the geometric mean of 2 and 3

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4 years ago

The answer below thanks

Greeley [361]

Answer:

The equation of the circle having centre (-5,-9) and radius r=3 is

x² + 10 x +y² + 14 y + 65 = 0

Step-by-step explanation:

Explanation:-

From graph The centre of the circle C( -5 , -7)

The radius of the circle r = 3cm from the centre of the given circle

The equation of the circle

From graph the centre ( h, k) = ( -5,-7) and r = 3cm

$(x-(-5))^2+(y-(-7))^2 = 3^2$

x² + 10 x +25 +y² + 14 y + 49 =9

x² + 10 x +25 +y² + 14 y + 49 -9=0

The equation of the circle

x² + 10 x +y² + 14 y + 65 = 0

8 0

3 years ago

Systems of equations with different slopes and different y-intercepts have one solution.

eduard

A. Always because imagine a line where one is y=x and the other is y=-x+1. The point of intersection would be (1,1)

4 0

3 years ago

According to a study conducted by the Toronto-based social media analytics firm Sysomos, of all tweets get no reaction. That is,

Svetllana [295]

Answer:

a) E(X) = 71

b) V(X) = 20.59

Sigma = 4.538

Step-by-step explanation:

The question is incomplete:

According to a 2010 study conducted by the Toronto-based social media analytics firm Sysomos, 71% of all tweets get no reaction. That is, these are tweets that are not replied to or retweeted (Sysomos website, January 5, 2015).

Suppose we randomly select 100 tweets.

a) What is the expected number of these tweets with no reaction?

b) What are the variance and standard deviation for the number of these tweets with no reaction?

This can be modeled with the binomial distribution, with sample size n=100 and p=0.71, as the probability of no reaction for each individual tweet.

The expected number of these tweets with no reaction can be calcualted as the mean of the binomial random variable with these parameters:

$E(X)=n\cdot p=100\cdot 0.71=71$

The variance for the number of these tweets with no reaction can be calculated as the variance of the binomial distribution:

$V(X)=np(1-p)=100\cdot0.71\cdot0.29=20.59$

Then, the standard deviation becomes:

$\sigma=\sqrt{V(X}=\sqrt{20.59}=4.538$

5 0

3 years ago