Answer:
The correct answer is A on edg.
Step-by-step explanation:
Just took the test, and got it right.
Answer: 2
Step-by-step explanation:
try each value in the equation
2(0) + 1 = 3
0 + 1 = 3
1 ≠ 3
so 0 doesn’t work
2(1) + 1 = 3
2 + 1 = 3
3 = 3
this works, so the answer is 1
Answer:
B & D
Step-by-step explanation:
Volume is calculated as:
For (a):
For (b):
For (c):
For (d):
<em>There's no need to check for (e)</em>
<em>Option b and d answers the question</em>
4y = 5x + 25
———————
4
Y = 5/4x + 6.25
Same slope
Slope = 5/4x
Cos²x+2cos x+1=0
We have to do a change of variable.
cos x=t
Then, we have the next square equation.
t²+2t+1=0
We solve this square equation:
t=[-2⁺₋√(4-4)]/2=-1
if cos x=t then we have that:
cos x=-1
x=cos⁻¹ -1= π radians or 180º.
Answer: x=π (in radians) or x=180º (in degrees).