Answer:27
Step27-by-step explanation:
Answer:
8 pounds
Step-by-step explanation:
use a proportion of 2/5 = x/20.
x will equal 8
X + 3y = 7
x = -3y + 7
2x + 4y = 8
2(-3y + 7) + 4y = 8
-6y + 14 + 4y = 8
-6y + 4y = 8 - 14
-2y = - 6
y = -6/-2
y = 3
x + 3y = 7
x + 3(3) = 7
x + 9 = 7
x = 7 - 9
x = -2
solution is (-2,3)
First blank is 90 degrees and second blank is 2 cause it goes ab then your at c that's 2
Runner = 5 mph
bicyclist...4 times the runner....4(5) = 20 mph
20 - 5 = 15 mph <== the difference
