Answer:
(c)
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos42° = 
= 
Multiply both sides by 12
12 × cos42° = x, hence
x ≈ 8.9 → (c)
Answer:
i dont know if u know the equation for volume but it is length times width times height SO you would multiply 8.25 times 3 times 5
5 times 3 is 15 so u then multiply 8.25 times 15
sorry if u wanted the full answer
3.
3x15=45
3x8=24.
Hope I helped!
X intercept 1.375
Y intercept -2.2
Supplementary means the 2 angles add up to 180 so...
124+(2x+4)=180
124+2x+4=180
124+2x+4-4=180-4
124+2x=176
124-124+2x=176-124
2x=52
2x/2=52/2
x=26
plug in and check
124+2x+4=180
124+2 (26)+4=180
124+52+4=180
176+4=180
180=180
