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KonstantinChe [14]
4 years ago
13

Please help me solve number 26 and number 27

Mathematics
1 answer:
Gnom [1K]4 years ago
7 0
26.
|4x - 9| = 19 ⇔ 4x - 9 = 19 or 4x - 9 = -19    |add 9 to both sides

4x = 28 or 4x = -10    |divide both sides by 4

x = 7 or x = -2.5

Answer: (C) 7.


27.
m = (p/q)^4 = p^4/q^4; n = (q/p)^(-2) = q^(-2)/p^(-2)

m/n = (p^4/q^4)/[q^(-2)/p^(-2)] = (p^4/q^4) · [p^(-2)/q^(-2)]

= p^(4-2)/q^(4-2) = p^2/q^2 = (p/q)^2

Answer: (C) (p/q)^2.
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Butoxors [25]
Hello,


y= x^3-4x²-3x+18=(x-3)²*(x+2)

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1) Stationary points

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5 0
3 years ago
If 3n + 7 = 25, then find the value of the expression 8n - 3]
daser333 [38]

Answer:

n=6,

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63

Step-by-step explanation:

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3n=25-7

3n=18

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3 0
3 years ago
Suppose that for a particular family of T-distributions that t2 has 2 degrees of freedom (df) and t9 has 9 degrees of freedom. W
aksik [14]

tdf will approach z.

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7 0
2 years ago
I need to find the area of a rhombus that has the hight of 20.25 and the length of 40.75<br>​
AleksAgata [21]

Answer:

825.1875

Step-by-step explanation:

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4 0
4 years ago
The total cost 95 pens and 89 notebooks is RS 7434.The total cost of 1 pen and 1 notebook is 81.What the cost of 1 notebook?
Alex

Answer:

The cost of 1 note book = Rs 43.5

Step-by-step explanation:

Given in question as :

95 pens (P) + 89 notebook (N) total cost = Rs 7434

1 pen (P)     +  1 (N)                      total cost = Rs 81

So, from above equation

95 pens (P) + 89 notebook (N) total cost = Rs 7434

1 × 95 pen (P)  +  1× 95 notebook (N)  total cost = Rs 81 × 95

Or, (95 pens (P) + 95 notebook (N) ) - (95 pens (P) + 89 notebook (N) ) = (7695 - 7434)

Or , 6 N = Rs 261

Or,    N =\frac{261}{6} = Rs 43.5

Hence the cost of 1 notebook is Rs 43.5  Answer  

4 0
3 years ago
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