Answer:
All of them except for the 3rd one
Step-by-step explanation:
2) 15 - 3x = 5(x + 4) - 8x
15 - 3x = 5x + 20 - 8x
15 - 3x ≠ -3x + 20
4) 2(x - 7) = 2x - 10
2x - 14 ≠ 2x - 10
1) 24x - 22 = -4(1 - 6x)
24x - 22 ≠ -4 + 24x
3) 12 - 2x = 6(2x + 2)
12 - 2x = 12x + 12
0 = 14x
0 = x, only one that has a solution
I think the ratio would be 5 : 2 : 2 : 3
Hello,
So they don't intersect !!!!!!!!!!!!!!!!!!!!!!!
Answer:
2.5 hours/3 hours
Step-by-step explanation:
If it takes the beginner 6 hours and experienced tinter 3 hours working together it should take roughly 2.5 hours to 3 hours because the time would be cut in half.
Answer:
angle LKJ = 49 degrees
Explanation:
Triangle JKL is a right-angled triangle. This means taht the special trigonometric functions can be applied.
These trig functions are:
sine θ = opposite side / hypotenuse
cos θ = adjacent side / hypotenuse
tan θ = opposite side / adjacent side
In the given:
θ is angle LKJ
the opposite side is LJ = 8.9 cm
the adjacent side is LK = 7.7 cm
using the tan of the angle:
tan (LKJ) = 8.9 / 7.7
angle LKJ = tan^-1 (8.9 / 7.7)
angle LKJ = 49.134 which is approximately 49 degrees
Hope this helps :)