2 years ago

What is the vertex x^2+2x-3=0

Mathematics

1 answer:

kicyunya [14]2 years ago

3 0

Step-by-step explanation:

2 squared plus 2 =5

5+2x =7x

7x-3 = 4x

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Use logarithms to solve each equation 2x9/8=111

Illusion [34]

<span>We have this equation:
</span>
$2x^{\frac{9}{8}} = 111$

and we need to find the value of x.

First of all, we multiply the whole equation for 1/2, so our goal is to isolate x, therefore:

$x^{\frac{9}{8}}=\frac{111}{2}$

Next step we must do is to apply <span>logarithms:
</span>
$logx^{\frac{9}{8}} = log(\frac{111}{2})$

Next, we have to apply identities and then to solve the equation:

$\frac{9}{8}logx = log(\frac{111}{2})$
$logx = \frac{8}{9}log(\frac{111}{2})$
$logx = 1.5504$
$10^{logx} = 10^{1.5504}$

Finally, we have the value of x which was our goal. This is the answer for the question above:

$x= 35.5140$

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3 years ago

It takes a car 1.75 h to go from mike marker 10 to mile marker 115. what is the average speed of the car?

Black_prince [1.1K]

Answer:

60 mph

Step-by-step explanation:

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3 years ago

7/5 x -3/12 + 7/6 + 7/5 x 1/4

Studentka2010 [4]

Answer: