the coordinates where the bridges must be built is
and
.
<u>Step-by-step explanation:</u>
Here we have , a road follows the shape of a parabola f(x)=3x2– 24x + 39. A road that follows the function g(x) = 3x – 15 must cross the stream at point A and then again at point B. Bridges must be built at those points.We need to find Identify the coordinates where the bridges must be built. Let's find out:
Basically we need to find values of x for which f(x) = g(x) :
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
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⇒ 
Value of g(x) at x = 3 : y=3x -15 = 3(3)-15 = -6
Value of g(x) at x = 6 : y=3x -15 = 3(6)-15 = 3
Therefore , the coordinates where the bridges must be built is
and
.
(1)
given
=
( cross- multiply )
10j = 54 ( divide both sides by 10 )
j =
=
← in simplest form
(9)
let h be the hours worked daily , then
3h = 20
=
( divide both sides by 3 )
h =
÷ 3
=
×
=
= 6 
She worked 6
hours each day
Answer:
The additive inverse of 0 is 0.
Answer:
It's the second one.
Step-by-step explanation:
Answer:
6 and 7, √
43 is approximate 6.56
Step-by-step explanation: