Answer:
B.
Step-by-step explanation:
f(x) has two complex roots and one real root.
Answer:
Actually that's incorrect
Step-by-step explanation:
The oldest son will get $370, the middle will get $220 and the youngest will get $185.
Step-by-step explanation:
Given,
Total amount to be split = $775
Let,
Oldest son's share = x
Middle son's share = y
Youngest son's share = z
According to given statement;
x+y+z=775 Eqn 1
the oldest gets twice as much as the youngest
x = 2z Eqn 2
the middle son gets $35 more than the youngest
y = z+35 Eqn 3
Putting value of x and y from Eqn 2 and 3 in Eqn 1
![2z+(z+35)+z=775\\2z+z+35+z=775\\4z=775-35\\4z=740\\](https://tex.z-dn.net/?f=2z%2B%28z%2B35%29%2Bz%3D775%5C%5C2z%2Bz%2B35%2Bz%3D775%5C%5C4z%3D775-35%5C%5C4z%3D740%5C%5C)
Dividing both sides by 4
![\frac{4z}{4}=\frac{740}{4}\\z=185](https://tex.z-dn.net/?f=%5Cfrac%7B4z%7D%7B4%7D%3D%5Cfrac%7B740%7D%7B4%7D%5C%5Cz%3D185)
Putting z=185 in Eqn 2
![x=2(185)\\x=370](https://tex.z-dn.net/?f=x%3D2%28185%29%5C%5Cx%3D370)
Putting z=185 in Eqn 3
![y=185+35\\y=220](https://tex.z-dn.net/?f=y%3D185%2B35%5C%5Cy%3D220)
The oldest son will get $370, the middle will get $220 and the youngest will get $185.
Keywords: linear equation, substitution method
Learn more about substitution method at:
#LearnwithBrainly
4)
area of figure = bh = 8x10 = 80
same as a trapezoid have base 6 and 14 and height 8
because A of trapezoid = 1/2(6+14)*8 = 80
so answer is C
a trapezoid with bases of 6 mm and 14 mm and a height of 8 mm
5)
area of original figure A = bh = 8 x 10 = 80
if double h = 16 and b = 20 then A = 16 x 20 = 320
the area is quadrupled.
answer is C.
The area is quadrupled