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pishuonlain [190]
3 years ago
6

I need help solving this

Mathematics
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

9

Step-by-step explanation:

You are trying to figure out what x is.

So, ignore the fact that x is a letter and think of it as a "?".

Then think, "What number divided by 3 equals 3?"

So, 9 is the answer!

You could also switch the number around, and multiply:

3 x 3 = x    or   3 x 3 = ?

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Find the slope and the y-intercept of the line 6x+2y=5.
Alexeev081 [22]
The slope is -3 I’m not sure about the intercept
3 0
3 years ago
magazine provided results from a poll of adults who were asked to identify their favorite pie. Among the ​respondents, ​% chose
Alex73 [517]

Complete Question

A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 ​respondents, 12 ​% chose chocolate​ pie, and the margin of error was given as plus or minus 5 percentage points.What values do ​ \r p ,  \ \r q, ​n, E, and p​ represent? If the confidence level is 90​%, what is the value of \alpha ​?

Answer:

a

   \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

   E is the  margin of error is E  =  0.05

   \r  q represents the proportion of those that did not chose chocolate​ pie i.e                        \r  q  =  1-  \r p

b

   \alpha  = 10\%

Step-by-step explanation:

Here

    \r p is the sample proportion   \r  p  =  0.12

   n is the  sample size is  n  =  500

    \r  q represents the proportion of those that did not chose chocolate​ pie i.e  

      \r  q  =  1-  \r p

      \r  q  =  1-  0.12

      \r  q  = 0.88

     E is the  margin of error is E  =  0.05

Generally \alpha is the level of significance and it value is mathematically evaluated as

     \alpha  = ( 100 -  C  )\%

Where  C is the confidence level which is given in this question as  C =  90  \%

So  

    \alpha  = ( 100 -  90  )\%

    \alpha  = 10\%

5 0
3 years ago
What ia the common ratio of the sequence? -2 , 6, -18, 54,...
Jlenok [28]
Its a multiplication by -3 on each term, so I think you're gonna answer is by r=-3, maybe?
7 0
3 years ago
Write a function in the form y=mx+b for the line that contains the points (-6.4, -2.6) and (5.2, 9)
allsm [11]
First solve for the slope, m using the two points given. It doesn't matter which point you choose as point 1 or 2 as long as you're consistent.

m = (y2 - y1)/(x2 - x1)

point 1: (–6.4, –2.6)

point 2: (5.2, 9)

m = (9 - -2.6)/(5.2 - -6.4)
m = (9 + 2.6)/(5.2 + 6.4)
m = 11.6/11.6
m = 1

put the newly found slope into the linear equation for m

y = (1)x + b
y = x + b

Now solve for the y-intercept, b
by putting one of the given points

9 = 5.2 + b

b = 9 - 5.2
b = 3.8

final equation:

y = x + 3.8
7 0
3 years ago
Lucia has $600 in her checking account. She wants to spend part of this money on a computer. She wants to have exactly $250 left
sesenic [268]

Answer:

t = 350

Step-by-step explanation:

subtract 250 from each side, and then you'll have t = 350

3 0
3 years ago
Read 2 more answers
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