57-----------------------
Answer:
a 3.889
b 3.735
c 4.013
Step-by-step explanation:
a. 45p is 0 175/45=3.889
b 420/113= 3.735
c1.2kg= 1200g /299 =4.013
/ means divide
2(x+10)=3x-30
2x+20=3x-30
x=50
Therefore, x=50 is your answer.
Remember that vertical angles, angles opposite from each other, have the same degree. That is why you can set up 2(x+10)=3x-30.
We're given D = 83 and E = 11. Let's find the missing angle F
D+E+F = 180
83+11+F = 180
94+F = 180
F = 180-94
F = 86
Since the triangle has angles
D = 83
E = 11
F = 86
We can say the following:
- FD is the shortest side (since it is opposite the smallest angle E = 11)
- ED is the longest side (since it is opposite the largest angle F = 86)
- That puts side EF as the medium length side of the triangle.
- All three angles of this triangle are less than 90, so this triangle is acute.
- Also, all three angles are different which makes this triangle scalene as well.