Answer:

Step-by-step explanation:
Bid of first company:
Bid is
more
of 
Bid of first 
Bid of second company:
Bid of second is
greater than that of first
of first bid 
Hence Bid of second company 
<span>the equation -2x² + 5x -3=0, we notice that the sum of the coefficient equals 0, -2+5-3=0, if such a case happens, the solution of the previous equation will be, x=1 (always) and x= c/a, a=-2, and c=-3, so x=-3/-2, finally, the answer is: the 2 in the denominator should be -2</span>
Answer:
The sides of ∆ABC are 30 units, 40 units, and 60 units long.
The perimeter will be =
units
Given is that ∆ABC and ∆XYZ are similar and the corresponding sides of ∆XYZ are 'r' times as long as the sides of ∆ABC.
So, perimeter of ∆XYZ will be :
units.
----------------------------------------------------------------------------------------
The area of ∆ABC is n square units, so area of ∆XYZ will be :

= 
=
square units.
Answer:
The correct option is B.
Step-by-step explanation:
The given equation are


On solving both the equation, we get




Put this value in the given equation.




The solution of the given system of equation is

The best approximation of the exact solution is (1.3,2.3). Therefore the correct option is B.
Answer:
They are perpendicular because they have slopes that are opposite reciprocals of −2 and one half.
Step-by-step explanation:
This is because x = -2 and half of -2 is 1
when we use CD line and x2 we find 8x+4y=16 when added to 2x -4y=8 would equal 10x+4y = 2 1/2 xy = 16
When we use for AB line we see they are perpendicular 2 1/2 x 2 = 5 -4y = 8 shows y to be -2 and the 1/2 line leaves -2 1/2 and x also is 2 1/2.