Answer:
-41
Step-by-step explanation:
13 - (54) simplifies to 13 - 54, which in turn is -41.
Answer: 62degree
Step-by-step explanation: The decision on a photo
1. Let the sides of a triangle be a, b and c.
Assume c is the largest side.
The maximum angle measure in an acute triangle can be 90°. In such a case we would have
Now forget about side c, and open the angle between a and b just a little bit. Now clearly
is larger that
because the "new c" is larger than the old one.
2. So for 3 numbers to be the lengths of the sides of an acute triangle, the sum of the squares of the 2 smaller numbers must be at most equal to the square of the largest number but not more.
Check:
A. 4^2+5^2=16+25=41<49
B. 5^2+7^2=25+49=74>64
C. 6^2+7^2=36+49=85<100
D. 7^2+9^2=49+81=130<144
3. Correct answer: only B
Answer:
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Step-by-step explanation:
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Answer:
Only A
Step-by-step explanation:
A. This is the arithmetic sequence, because
The first term of this sequence is and the difference is 0.3.
B. Since this is not arithmetic sequence.
C. Since this is not arithmetic sequence.
D. Since this is not arithmetic sequence.