12 plus 12 (walk to and from her grandparents) times 2 (two times a week she goes) equals 48. So, she spends 48 minutes walking between the two houses.
<span>2y = 4x + 8 ------> y = 2x + 4
4y = 4x + 20 ------> y = x+5
2x+4 =x+5
x = 1
y=x+5=1+5=6
Check:
</span>2*6 = 4*1 + 8 , 12 =12
4*6 = 4*1 + 20, 24 =24<span>
x=1,y=6
(1,6)
</span>
Answer: 45,280
Step-by-step explanation:
566 * 80 = 45,280
1) sample
2. random sample
3. biased sample
4. estimating from a sample
hope it helps
