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Ira Lisetskai [31]
3 years ago
9

−px+r=−8x−2 solve for x

Mathematics
2 answers:
Rina8888 [55]3 years ago
7 0

x=  _-r____-2___
        -p     +   8 
qwelly [4]3 years ago
4 0
-px+r=-8x-2  add 8x to both sides

8x-px+r=-2  subtract r from both sides

8x-px=-r-2  factor left side

x(8-p)=-r-2  divide both sides by (8-p)

x=(-r-2)/(8-p)  multiply right side by -1/-1

x=(r+2)/(p-8)
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This is the last one thank u !
iren2701 [21]

Answer and Step-by-step explanation:

The answer is that <u>A'C' will be 1.5 times longer than AC.</u>

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This is because you are dilating the figure by a scale of 1.5.

<em><u>#teamtrese #PAW (Plant and Water)</u></em>

6 0
3 years ago
Read 2 more answers
Find the geometric sum 4 + 12 + 36 + . . . + 236,196.
Zolol [24]
The answer choices are sufficiently far apart that you can work this backward. The sum will be ...
  236,196*(1 + 1/3 + 1/9 + 1/27 + ...)
so a reasonable estimate can be given by an infinite series with a common ratio of 1/3. That sum is
  236,196*(1/(1 - 1/3)) = 236,196*(3/2)

Without doing any detailed calculation, you know the best answer choice is ...
  354,292


_____
There are log(236196/4)/log(3) + 1 = 11 terms* in the series, so the sum will be found to be 4(3^11 -1)/(3-1) = 2*(3^11-1) = 354,292.

Using the above approach (working backward from the last term), the sum will be 236,196*(1-(1/3)^11)/(1-(1/3)) = 236,196*1.49999153246 = 354,292

___
* If you just compute log(236196/4)/log(3) = 10 terms, then your sum comes out 118,096--a tempting choice. However, you must realize that the last term is larger than this, so this will not be the sum. (In fact, the sum is this value added to the last term.)
3 0
3 years ago
X^2-14x-4=0, solve by completing the square
REY [17]
The answer is: x = 7 - √53      or      x = 7 + √53

The general quadratic equation is: ax² + bx + c  = 0.
But, by completing the square we turn it into: a(x + d)² + e = 0, where:<span>
d = b/2a
e = c - b²/4a
Our quadratic equation is x² - 14x -4 = 0, which is after rearrangement:
So, a = 1, b = -14, c = -4
Let's first calculate d and e:
d = b/2a = -14/2*1 = -14/2 = -7
e = c - b²/4a = -4 - (-14)</span>²/4*1 = -4 - 196/4 = -4 - 49 = -53<span>
By completing the square we have:
a(x + d)² + e = 0

1(x + (-7))</span>² + (-53) = 0
(x - 7)² - 53 = 0
(x - 7)² = 53
x - 7 = +/-√53
x = 7 +/- √53

Therefore, the solutions are:
x = 7 - √53
or
x = 7 + √53
4 0
3 years ago
Read 2 more answers
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NemiM [27]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
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"if A then B" can be described as
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...a conditional statement in logic or computer science. Sometimes it’s called a Boolean.
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