Answer:
Domain: all real numbers
The interval on which the function is increasing is : (0 , infinity)
The interval on which the function is decreasing is : (-infinity , 0)
The interval on which the function is constant is : ( 0,0 )
Step-by-step explanation:
f(r)=5r^2−4
This is a quadratic function.
vertex at (0, -4) and with positive coefficient for r^2
The interval on which the function is increasing is : (0 , infinity)
The interval on which the function is decreasing is : (-infinity , 0)
The interval on which the function is constant is : ( 0,0 )
Answer:
yes , because X=1 is the only real solutions
-31F because of the formula.
-35°C multiplied by 9/5 +32 = -31°F
~JZ
Hope it helps
Answer:
1. -6y^4 +4y^2 -12
2. x - 19
Step-by-step explanation:
1.
(6y^4+3y^2-7) - (12y^4-y^2+5)
= -6y^4+ 4y^2- 12
2. 3(x-5) - (3x+4)
= (3x-15) - (3x+4)
= x-19
Step-by-step explanation:
1/sin10-√3/cos10
= (cos10 - √3sin10)/cos10sin10
multiplying 1/2 in denominator and numerator
= {(cos10/2) - (√3sin10/2)}/(cos10sin10/2)
= (cos60cos10 - sin60sin10)/(cos10sin10/2)
= cos(60 + 10)/(cos10sin10/2)
= cos70/(cos10sin10/2)
= 2cos70/cos10sin10
multiplying 2 on numerator and denominator
= 4cos70/2sin10cos10
=4cos70/sin20
=4cos70/cos70
= 4 proved
