Answer:
Zhang: 17, Robert: 22
Step-by-step explanation:
Robert's age would be z+5, 2×z+5=39, z=17 So Zhang's age would be 17, and Robert's would be 22
Answer: (0,1), (1,0)
Step-by-step explanation:
plug in a number for y.
ex) x=0 y=1
y=-x + 1
1= -0 + 1
1=0 + 1
I'm not sure what you mean, but I think the answer is 3/6
Answer:
b
Step-by-step explanation:
Answer:
2500 = 2.5×![10^{3}](https://tex.z-dn.net/?f=10%5E%7B3%7D)
47,300 = 4.73×![10^{4}](https://tex.z-dn.net/?f=10%5E%7B4%7D)
14,565 = 1.4565×![10^{4}](https://tex.z-dn.net/?f=10%5E%7B4%7D)
19,050,000 = 1.905×![10^{7}](https://tex.z-dn.net/?f=10%5E%7B7%7D)
Step-by-step explanation: