Answer:
4948
Step-by-step explanation:
volme of a cylinder= π×h
Evaluate the expression below when X = 4 and y = (-3) 4x + 2xy
1 answer:
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about the second one... well, is a "fait accompli" that using the pythagorean theorem, if x = 8 and y = 5, the hypotenuse must be √(8² + 5²) = √(89), which is neither of those choices.
5, 8, 13 are no dice, namely 5² + 8² ≠ 13
25, 64, 17 is are no dice too, because 25² + 17² ≠ 64²
however, 5,12 and 13 are indeed a pythagorean triple
also is 39, 80, 89.
when looking for a pythagorean triple, recall that c² = a² + b².
so the longest leg is the sum of the square of the small ones.
so what you'd do is, check the small legs, square them, add them up, if they're indeed a pythagorean triple, they "must" add up to the longest leg.
Answer:
Yes they are
Step-by-step explanation:
In the triangle JKL, the sides can be calculated as following:
- J(2;5); K(1;1)
=> JK =
- J(2;5); L(5;2)
=> JL =
- K(1;1); L(5;2)
=> KL =
In the triangle QNP, the sides can be calculate as following:
- Q(-4;4); N(-3;0)
=> QN =
- Q (-4;4); P(-7;1)
=> QP =
- N(-3;0); P(-7;1)
=> NP =
It can be seen that QPN and JKL have: JK = QN; JL = QP; KL = NP
=> They are congruent triangles