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3 years ago

12

Find the difference. Express your answer in simplest form. z-7/z+8-(-2z-7)/z+8

1 answer:

Levart [38]3 years ago

3 0

Answer:

z^2x+10zx+8z^2+73z+7z/(z+8)(z+8)

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Step-by-step explanation: Simplify the expression.

Hope this helps you out! ☺

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<span>3.01 x 10^23 Calcium ions.</span>

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2 _<br> 3 --- + 2.3=<br> 3<br><br><br> giving 25 points for the right answer asap

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$3 \frac{2}{3} + 2.3 \\\implies 3 \frac{2}{3} + \frac{23}{10} \\\implies \frac{11}{3} + \frac{23}{10} \\\implies \frac{110+69}{30} \implies \frac{179}{30}$

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A sea turtle swims at a speed of 27 kilometers per hour. A girl swims 14 decimeters per second. 1 m = 10 dm 1000 m = 1 km How mu

insens350 [35]

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The graph of the function f(x)=ax^2+bx+c has its vertex at (0,1) and passes through the point (1,9) find a b and c

Evgen [1.6K]

Answer:

$a=8$

$b=0$

$c=1$

Step-by-step explanation:

The vertex form of a quadratic is $y=a(x-h)^2+k$ where the vertex is $(h,k)$ .

We are given $h=0,k=1$ .

Plugging this in gives us:

$y=a(x-0)^2+1$

Simplifying:

$y=ax^2+1$

Since it passes through $(x,y)=(1,9)$ , we can use this information to find $a$ .

$9=a(1)^2+1$

$9=a+1$

$8=a$

So the quadratic in vertex form is $y=8x^2+1$ .

That happens to be in standard form as well.

$a=8$

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$c=1$

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3 years ago