How do you solve 4b^2+8b+-12=0. Also find the parabole.?

1 answer:

4 0

First you divide everything by 4 which will become b^2+2b-3=0
Then you can factor this which is
(b-1)(b+3)=0
B=1
B=-3 ... I think that's how you do it

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The circle above has a radius of 10 cm. What is the area of the circle? Use = 3.14.

nataly862011 [7]

For this you need the formula for a circle:

A=πr2 (pi r squared)

A=π(10) squared
A=(3.14)(10) squared
(remember to square before you multiply - order of operations)
A=(3.14)(10*10)
A=(3.14)(100)
A=314

Hope this helps! :)

4 0

3 years ago

An airplane is flying 600 mph on a horizontal path that will take it directly over an observer. The airplane remains a constant

dezoksy [38]

<h2>Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph</h2>

Step-by-step explanation:

We have by Pythagoras theorem

Distance between the observer and the airplane² = Horizontal distance² + Altitude²

d² = h² + a²

Here we have

h = X = 5 miles

a = 7 miles