Answer:
330.88 m/min
Step-by-step explanation:
rate = distance/time
= 4000 /12.089
= 330.88 m/min
X + y = 12
x - y = 4
-----------------add
2x = 16
x = 8
x - y = 4
8 - y = 4
y = 4
answer
two numbers: 8 and 4
doule check
sum = 8 + 4 = 12
difference = 8 - 4 = 4
K-2 I think I'm not sure though
Answer:
13
Step-by-step explanation:
12 * 12 = 144
5 * 5 = 25
144 + 25 = 169
√169 = 13
If you have |a|=b, solve a=b and a=-b
so
|-4+5x|=16
so solve
-4+5x=16 and -4+5x=-16
add 4 to both sides
5x=20 and 5x=-12
divide both sides by 5
x=4 and x=-12/5
the 2 solutions are x=-12/5 and x=4
