Answer:
38cm taller
Step-by-step explanation:
jack is 178cm tall
the ladder is 280cm tall
jack standing on the ladder is 280cm taller
so 178+280=458
the tree is 420cm tall
458>420
which means that jack is now taller than the tree standing in the ladder
458-420=38
so jack is 38cm taller than the tree standing on the top of the ladder
180/8 =22.5 22.5•20=450 miles
She has 4 groups all together. 3 groups with ten rocks each and 1 group with 8 rocks(8/10).
Answer:
![m = -\frac{4}{3}](https://tex.z-dn.net/?f=m%20%3D%20-%5Cfrac%7B4%7D%7B3%7D)
Step-by-step explanation:
![2m = -\frac{2}{3}](https://tex.z-dn.net/?f=2m%20%3D%20-%5Cfrac%7B2%7D%7B3%7D)
Divide both sides by 2 to get just m
![\frac{2m}{2} = \frac{-\frac{2}{3}}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2m%7D%7B2%7D%20%3D%20%5Cfrac%7B-%5Cfrac%7B2%7D%7B3%7D%7D%7B2%7D)
You can't divide a fraction by a number so you do kcf (keep it, change it, flip it)
![m = -\frac{2}{3} x \frac{2}{1}](https://tex.z-dn.net/?f=m%20%3D%20-%5Cfrac%7B2%7D%7B3%7D%20x%20%5Cfrac%7B2%7D%7B1%7D)
![m = -\frac{4}{3}](https://tex.z-dn.net/?f=m%20%3D%20-%5Cfrac%7B4%7D%7B3%7D)