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3 years ago

13+x+195=13(x+15)...

2 answers:

6 0

First, let's expand the right side. Now our equation is

$13+x+195=13x+195$

Now, we gather all the terms with x in it on the left side, and the numbers without x on the right. We get:

$-12x=-13$

And then we can make this

$12x=13$

We divide both sides by 12 to get x on its own, so x = 13/12 or 1.08

Lina20 [59]3 years ago

4 0

step 1 Simplify:x+208=13x+195
Step 2: Subtract 13x from both sides.x+208−13x=13x+195−13x−12x+208=195
Step 3: Subtract 208 from both sides.−12x+208−208=195−208−12x=−13S
Step 4: Divide both sides by -12.−12x−12=−13−12x=1312

Answer:x=13/12

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Read 2 more answers

The population standard deviation of the numbers 3, 8, 12, 17, and 25 is 7.563 correct to 3 decimal places. what happens if each

user100 [1]

Let's figure this out as though we have no idea what the answer would be.

Step One
Find the new five numbers.
3*3, 8*3, 12*3, 17*3, 25*3
9 , 24 , 36, 51, 75

Step 2
Find the average
(9 + 24 + 36 + 51 + 75)/5 = 195/5 = 39

Step 3
Subtract the individual numbers from the average
(39 - 9) = 30
(39 -24) = 15
(39 - 36) = 3
(39 - 51) = - 12
(39 - 75) = -36

Step 4
Square the results from Step 3
30^2 = 900
15^2 = 225
3^2 = 9
(-12)^2 = 144
(-36)^2 = 1296

Step 5
Take the average of the results from step 4
(900 + 225 + 9 + 144 + 1296)/5
2574 / 5 = 514.8

Step 6
Take the square root of the result from step 5
deviation = sqrt(514.8)
deviation = 22.689

Step seven
Compare the two standard deviations.
s2/s1 = 22.689 / 7.563 = 3

Conclusion
If you are given 1 set of numbers to find a population standard deviation and you multiply each member by a, then the result will be a * the standard population deviation of the first set of numbers.

Note
Your calculator will do this as well, but you have to know how to enter the data into your calculator. That requires that you follow the directions carefully.

7 0

3 years ago

If the probability that a bird will lay an egg is 75%, the probability that the egg will hatch is 50%, and the probability that

garik1379 [7]

Answer: (A) 30%

Step-by-step explanation:

Given : The probability that a bird will lay an egg =0.75

The probability that the egg will hatch =0.50

Now, the probability that the egg will lay an egg and hatch = $0.75\times0.50$

Also,The probability that the chick will be eaten by a snake before it fledges =0.20

Then, the probability that the chick will not be eaten by a snake before it fledges : 1-0.20=0.80

Now, the probability that a parent will have progeny that survive to adulthood will be :-

$0.75\times0.50\times0.80=0.30=30\%$

Hence, the probability that a parent will have progeny that survive to adulthood = 30%

3 0

3 years ago

Write this as an equation in point-slope form Please answer as quickly as possible. 50 pts!!!!!

jeka57 [31]

The answer is: " y − 1 = - 3(x + 2) " .
__________________________________________________________

Explanations:
__________________________________________________________

Note: The "point-slope form" of the equation of a line is:

→ " y − y₁ = m(x −x₁) " .

We are given the slope, m" , is: " - 3 " ;

We are given a point on the line [on the graph that is represented by this equation]; with the coordinates: " (-2 , 1) " ;

→ which is in the format: " (x₁ , y₁) " ;

→ As such: " x₁ = -2 " ; " y₁ = 1 " ;
_____________________________________________________
As aforementioned, the equation of a line in "point-slope form" ; is:
_________________________________________________________
→ " y − y₁ = m(x − x₁) " ;

in which:

→ "(x₁ , y₁) " represents the coordinates of a given point on the [line of the graph represented by the equation] ; AND:

→ " m " = the slope of the line [represented by the equation] " ;

We proceed by substituting our known values for "m" ; "y₁" ; and "x₁" :

→ " y − 1 = - 3(x − (-2) ) " ;
_______________________________________________________
→ Rewrite as:
_______________________________________________________
→ " y − 1 = - 3(x + 2) " ;

→ which is our answer; since it is written in "point-slope form" .
_______________________________________________________

3 0

3 years ago