#5 is
Let's solve your equation step-by-step.
2
5
x−1=9
Step 1: Add 1 to both sides.
2
5
x−1+1=9+1
2
5
x=10
Step 2: Multiply both sides by 5/2.
(
5
2
)*(
2
5
x)=(
5
2
)*(10)
x=25
Answer:
x=25
The equation for this line would be y=2x-4
Plug in your coefficients
The given angles are complementary, therefore:
(5r + 5) + (8r -6) = 90°
13r - 1 = 90
13r - 1 + 1 = 90 + 1
13r = 91
13r/13 = 91/13
r = 7
Answer:
C = ~50 deg
Step-by-step explanation:
Apply the cosine theorem:
cos(C) = (CA^2 + CB^2 - AB^2)/(2*CA*CB)
= (7.5^2 + 6.5^2 - 6^2)/(2*7.5*6.5)
= 0.6410
=> C = ~50 deg
Hope this helps!
