In football, the team that has the ball has four chances to gain at least ten yards, if they don't gain at least ten yards, the other team gets the ball, Positive numbers
represent a gain and negative numbers represent a loss, Select all of the sequences
of four plays that result in the team getting to keep the ball,
A. 8, -3, 4, 21
B. 30, -7,-8, -12
C. 2, 16, -5, -3
D, 5, 2, 20, -1
E. 20, -3, -13,2

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap