4. The average distance from the center of the Earth to the center of the Moon is 384,400 km. Write this number in scientific notation.
O A 3.844 x 102
OB. 3.844 x 105
O c. 38.44 x 104
D 3.844 x 10-5

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

In the following diagram it is given that dec, ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f