Answer:
B
Step-by-step explanation:
![\frac{3}{8} \div \frac{2}{7 } \\ = \frac{3}{8} \times \frac{7}{2 } \\= \frac{21}{16} \\ = 1 \frac{5}{16}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B8%7D%20%20%5Cdiv%20%20%5Cfrac%7B2%7D%7B7%20%7D%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B3%7D%7B8%7D%20%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B2%20%7D%20%20%5C%5C%3D%20%20%20%5Cfrac%7B21%7D%7B16%7D%20%20%5C%5C%20%20%3D%201%20%5Cfrac%7B5%7D%7B16%7D%20)
Answer:
If both pens are the same color, it means that they are either black and black or red and red.If without replacement,pr. of first black and second black is
8/11 and 7/10.Also, the pr of the first red and sencond red pen= 3/11 and 2/10.
Therefore pr. of bb or rr
(8/11×7/10)+(3/11×2/10)
56/110+6/110 =31/50
Answer:
69 mins
Step-by-step explanation:
46/10=4.6 mins per wall
46/4=11.5 mins per wall
11.5 x 6=69
Answer:
m=2
Step-by-step explanation:
y=mx+b
5y=10x-15 dived all by 5
y=2x-3----------2 is the slope
y=mx+b