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posledela
3 years ago
14

(–1) + 5 – (–6) – 5 = A. 0 B. 5 C. –2 D. –3

Mathematics
2 answers:
Keith_Richards [23]3 years ago
7 0
-(-6) = + 6
(-1) + 5 + 6 - 5 = 5
The answer is B
enot [183]3 years ago
5 0
B. If (x = 5)
Hope this helped :)
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Divid 15 into two parts such that the sum of their reciprocal is 3/10
emmasim [6.3K]
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Reciprocal of x and y ==> 1/x +1/y ==> 1/x + 1/y = 3/10 (given)


Let's solve  1/x + 1/y = 3/10 . Common denominator = 10.x.y (reduce to same denominator)

 ==> (10y+10x)/10xy = 3xy/10xy ==> 10x+10y =3xy

But x+y = 15 , then 10x+10y =150 ==> 150=3xy and xy = 50

Now we have the sum S of the 2 parts that is S = 15 and 
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Let's use the quadratic equation for S and P==> X² -SX +P =0
Or X² - 15X + 50=0, Solve for X & you will find:
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3 years ago
Who can answer this question
dimaraw [331]

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Step-by-step explanation:

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Evaluate the following expression for x = 4. <br><br><br> 1+3(x-1)-2x
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vova2212 [387]

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Step-by-step explanation:

So we had:

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