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3 years ago

Help with solving simulatenous equations with 1 quadratic . question attached

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

x = 1/2, y = 17/2

x = -3, y = 12

Tems11 [23]3 years ago

4 0

Answer:

x= -3, y=12

x=1/2, y=8 1/2

Step-by-step explanation:

y = 9-x

y= 2x²+4x+6

9-x= 2x²+4x+6
2x²+5x-3=0

solving, we get

x= -3 and x= 1/2

then

for x= -3, y= 9+3= 12

for x=1/2, y= 9-1/2= 8 1/2

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Answer:

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Step-by-step explanation:

To solve this, we are using the average rate of change formula:

$m=\frac{f(b)-f(a)}{b-a}$

where

$m$ is the average rate of change

$a$ is the first point

$b$ is the second point

$f(a)$ is the function evaluated at the first point

$f(b)$ is the function evaluated at the second point

We want to know the average rate of change of the function $f(x)=0.5^x-6$ form x = -3 to x = 0, so our first point is -3 and our second point is 0. In other words, $a=-3$ and $b=0$ .

Replacing values

$m=\frac{f(b)-f(a)}{b-a}$

$m=\frac{0.5^0-6-(0.5^{-3}-6)}{0-(-3)}$

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$m=\frac{-5-2}{3}$

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