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Alina [70]
3 years ago
15

If 3x - 6 = 21, what is the value of x - 2 ?

Mathematics
1 answer:
lora16 [44]3 years ago
5 0
3x-6=21
Or,3x=27
Or,x=27/3
Or,x=9
So,Now,
X-2=9-2
=7
Hope it helps
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Graph h(x) = (x - 2)(x - 4)
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h gfdsedrgfh bjbgvfdxesdrftvgbhnbgvfdcsxazsxdcfvgbhfvdcsx

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2 years ago
{(-9,3) (5,-6) (3,-1), (-6,5), ?}Which ordered pair can replace the missing value and make the set if ordered pairs NOT a functi
Nookie1986 [14]
\text{Slope}=\frac{-1--6}{3-5}=\frac{5}{-2}\begin{gathered} y-y_1=\frac{5}{-2}(x-x_1) \\  \\ y--6=\frac{5}{-2}(x-5) \\  \\ -2(y+6)=5(x-5) \\ -2y-12=5x-25 \\ 5x+2y=25-12 \\ 5x+2y=13 \end{gathered}

The missing values are (-6, -9) ( The last option)

Explanation:

x= - 6 has already produced the value of y as 5, the only pair in the given option the make the given ordered pairs NOT to be a function is (-6, -9) since it will give the value of y to be - 9.

4 0
1 year ago
Probability & Sampling:
Brums [2.3K]

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4 0
3 years ago
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HELP!! 4 questions !!! easy points!! 25 points!! please answer quick!
Afina-wow [57]

Step-by-step explanation:

(i) From the graph value of x varies -3 to 3 i.e.

-3\leq x\leq 3

and domain in the input values which function can take

So, option (d) is correct.

(ii) option (d) is correct as it represent the function y=x. While all the other function does not satisfy the given conditions.

(iii) (-14,-15), (-9,-10) are the parts of solution pair.

(iv) Option (c) and (d) represents the function as each element of the first set has a unique image in the second set.

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2 years ago
The first three terms in the binomial expansion of (a+b)^n in ascending powers of b, are p,q and r respectively. show that q^2/p
katen-ka-za [31]

First 3 terms are a^2 + n a^(n-)1 b + n(n-1)/2 * a^(n-2) b^2


So q^2 / pr = (n^2 * a^(2n-2) * b^2 ) / (1/2 * a^n * (n(n-1) * a^(n-2) * b^2 )


= n^2 * a^2n-2 * b^2

-----------------------------------

1/2 n(n-1) * a^(2n-2) * b^2


= 2n / n - 1 as required


given p = 4, q=32 and r = 96:-


32^2 / 4*96 = 2n / n-1

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6n = 8n - 8

2n = 8


n = 4 answer

7 0
2 years ago
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