Answer:
-1
Step-by-step explanation:
4u-5v=23
-2(2u+4v=16) We multiply by -2 here to destroy u's.
4u-5v=23
-4u-8v=16 we addition both processes
-13v=39 so, v=-3
4u-5(-3)=23, 4u=8 so, u=2
u+v= -3+2= -1
Sin(180°) = 0
sec(0°)=1
4(0)+2(1)=2
936 <span>39 </span>= 24
24 = 240 to the nearest tenth
24 = 24 to the nearest hundredth
24 = 24 to the nearest thousandth
= 0 to the nearest tenth
= 0 to the nearest hundredth
= 0 to the nearest thousandth
Answer:
8
Step-by-step explanation:
Step 1: Set up equation
-1 = 7 - x
Step 2: Subtract 7 on both sides
-8 = -x
Step 3: Divide both sides by -1
x = 8
So 7 subtracted by 8 equals -1.
Answer:
x ≈ 18.9
Step-by-step explanation:
using the cosine ratio in the right triangle
cos19° =
=
( multiply both sides by 20 )
20 × cos19° = x , then
x ≈ 18.9 ( to the nearest tenth )