Answer:
Hey there!
1 4/9x+y=2
13x+9y=18
Let me know if this helps :)
Explanation:
- 9 feet
- 10 feet (10 ft = 10·12 in = 120 in)
- 130 inches
- 12 feet (12 ft = 12·12 in = 144 in)
- 145 inches
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Obviously, 9 < 10 < 12, so ordering by feet is easy. Then we need to figure out where the inch measurements belong.
1 foot = 12 inches, so we can figure some references to use to compare to the inch measurements.
10 feet = 10·12 in = 120 in, so 130 in is longer, by less than 1 ft.
12 feet = 12·12 in = 144 in, so 145 in is longer.
Answer: No, it is not possible
A triangle can only have 1 obtuse interior angle, leaving the exterior angle next to it to be acute. For example, if you have an interior angle of 120 (obtuse) then the adjacent exterior angle is 60 (acute)
The other two interior angles must be acute if you go with 1 obtuse angle, which leaves the corresponding exterior angles to be obtuse. If you wanted the exterior angles to be all acute, then you would need 3 obtuse interior angles, but that is not possible.
Why isn't it possible to have 3 obtuse angles? Consider a triangle with interior angles A, B, C. The three angles must add to 180
A+B+C = 180
If A,B,C were all larger than 90, then
A > 90
B > 90
C > 90
A+B+C > 90+90+90
A+B+C > 270
but that contradicts A+B+C being equal to 180
Answer:
5 tens and 3 hundreds = 50 + 300 = 350. That is basically asking what number goes 5-3-2. This is because 5 hundreds means 5 in the hundreds place, or 500. 3 tens is just saying 3 in the tens place, or 30.
Step-by-step explanation:
