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3 years ago

9

Y=2x

mula">-6x+4

1 answer:

IgorC [24]3 years ago

3 0

Answer:

y = 2(x-1) (x-2)

x = 1 , x = 2

Step-by-step explanation:

Factorization :

$2x^2 - 6x + 4 = 2x^2 -4x -2x + 4$

$=2x(x-2)-2(x-2)\\=(2x-2)(x-2)\\=2(x-1)(x-2)$

Zeroes of y :

$x - 1 =0 => x = 1\\x -2 = 0 => x = 2$

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Billy has 95 stickers. He shares 4 with<br> Harry. How many stickers will Billy have?

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Step-by-step explanation:

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2 years ago

50 POINTS SHOW YOUR WORK

aliya0001 [1]

Answer:

The % growth rate is 15.8%.

Step-by-step explanation:

Let the function is given by $f(w) = a(b)^{w}$ , where f(w) is the number of a specific product produced after w weeks.

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2 years ago

If (ax+2)(bx+7)=15x2+cx+14 for all values of x, and a+b=8, what are the 2 possible values fo c

dolphi86 [110]

Given:

$(ax+2)(bx+7)=15x^2+cx+14$

And

$a+b=8$

Required:

To find the two possible values of c.

Explanation:

Consider

$\begin{gathered} (ax+2)(bx+7)=15x^2+cx+14 \\ abx^2+7ax+2bx+14=15x^2+cx+14 \end{gathered}$

So

$\begin{gathered} ab=15-----(1) \\ 7a+2b=c \end{gathered}$

And also given

$a+b=8---(2)$

Now from (1) and (2), we get

$\begin{gathered} a+\frac{15}{a}=8 \\ \\ a^2+15=8a \\ \\ a^2-8a+15=0 \end{gathered}$ $a=3,5$

Now put a in (1) we get

$\begin{gathered} (3)b=15 \\ b=\frac{15}{3} \\ b=5 \\ OR \\ b=\frac{15}{5} \\ b=3 \end{gathered}$

We can interpret that either of a or b are equal to 3 or 5.

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$\begin{gathered} c=7(3)+2(5) \\ =21+10 \\ =31 \end{gathered}$

When a=5 and b=3, we have

$\begin{gathered} c=7(5)+2(3) \\ =35+6 \\ =41 \end{gathered}$

Final Answer:

The option D is correct.

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