1) "30 minutes is equivalent to 0.30 hours". this sentence is wrong. why?
2) the mass of the sun is 1,98x10^30 kg. what is the order of magnitude of this mass?
a) 1,98 kg
b) 30
c) 10^31 kg
d) 10^30 kg
3) the masses of the earth and moon are respectively 5,98x10^24 kg and 7,34x10^22 kg. what is the order of magnitude of their relationship?
4) on the side of a bus stands a large billboard 2,50 m and high 130 cm. calculate the area of the panel. what extent the side of a second panel, square shape, with the same area of the first?

What is the arc length when θ =pi over 3 and the radius is 5 cm? (5 points) 5 pi over 3 cm 10 pi over 3 cm 16 pi over 3 cm pi over 3 cm

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?