First you should try and convert the mix numbers into improper fractions..
The gfc of 42 and 90 is 6
70 mi / 3 h = 23.33 miles / hour
Answer:
https://vietjack.com/giai-toan-lop-9/images/bai-38-trang-62-sgk-toan-9-tap-1-
Step-by-step explanation:
Vẽ đồ thị y = 2x (1):
Cho x= 0 ⇒ y= 0 ta được O (0, 0)
Cho x= 2 ⇒ y = 4 ta được điểm (2; 4)
- Vẽ đồ thị y = 0,5x (2):
Cho x= 0 ⇒ y = 0 ta được O (0; 0)
Cho x = 4 ⇒ y = 2 ta được điểm (4; 2)
- Vẽ đồ thị y = -x + 6 (3):
Cho x = 0 ⇒ y = 6 được điểm (0; 6)
Cho y = 0 ⇒ x = 6 được điểm (6; 0)
Để học tốt Toán 9 | Giải bài tập Toán 9
Answer:
4 Blocks.
Step-by-step explanation:
You start out going 8 east so that's 4.
Then you got 4 north as well so that's 12 because 8 + 4 = 12
then they walk 12 blocks west. Now they are in the position of 4 North and 4 West.
Next they go 4 blocks south. Since they went for blocks North first and now they go 4 blocks south and they are already on the fourth block to the west.
When they are at 4 North and 4 South the just travel to the original position but 4 blocks to the west.
Sorry if you don't understand the explanation. It's kinda difficult to explain.
