3a + 6 -4a + 4b
-1a + 6 + 4b
( not sure if this is a correct answer)
Answer:
s = 5(30 -s)
Step-by-step explanation:
The given relations support a system of equations:
s = 5h . . . . . . . . . . 5 times as many shirts as hats
s + h = 30 . . . . . . . 30 shirts and hats together
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If you want to write a single equation, you could write ...
s = 5(30 -s) . . . . . the number of shirts is 5 times the number of hats, and the number of hats is the difference between 30 items and the number of shirts.
Answer:
it's D
Step-by-step explanation:
Please, see the offered decision:
1) common equation for lines is y=kx+b. If k₁=k₂ (for line 1 and line 2) ⇒ 'line 1' || 'line 2'.
2) for line 3x+5y=6 k= -3/5. It means (according to item 1) for unknown line k is the same (-3/5).
3) using points (0;3) it is easy to find parameter b (x=0, y=3) via y=kx+b:
3=0*(-3/5)+b ⇔ b=3.
4) finaly (k=-3/5; b=3):
Answer:
x=3
Step-by-step explanation:
The triangle has angles 30,60,90
In this type of right triangle, the ratio of the sides is 1:square root of 3:2
In this type of triangle, the square root of 3 is equal to the 1 in the ratio above because it is across from the angle 30
With this, we multiply the ratio at the top by the square root of 3
since x is across the angle 60, we multiply square root of 3 by the square root of 3 which equals 3.
I hope this makes sense