Answer:
7.5 hours
Step-by-step explanation:
The key here is to find out how much can be done in the same amount ot time
the least common multiple of 5 hrs and 3 hrs is 15hrs
In 15 hours:
- At 5 hours per lawn Norton could mow 15/5 = 3 lawns
- At 3 hours per lawn together thay could mow 15/3 = 5 lawns
In 15 hours Jesse would mow 5 - 3 = 2 lawns
15 hours/ 2 lawns = 7.5 hours per lawn
7.5 hours
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Here's the math
1 lawn/5hrs + x = 1 lawn / 3hrs
1/5 + x = 1/3
Subtract 1/5 from both sides
x = 1/3 - 1/5
x = 5/15 - 3/15
x = 2/15
x = 2lawns/15 hrs
15hrs/2lawns = 7.5 hrs per lawn
7.5 hours
Answer:
30
Step-by-step explanation:
since 12 - 7 is in the- um- whatever these- ( )- things are called (I forgot), you do it first. 12 - 7 is 5.
Next you do 6 x 5 which gives you your final answer of 30.
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Answer: 14 meters
Step-by-step explanation:
Use the pythagorean theorem to solve.
12 ² + 8 ²= c ²
208= c ²
√ 208 = √ c ²
14.42= c
14 meters
Answer:B-70
Step-by-step explanation:
from the figure, In 
Thus we can write
Answer:
11/18:11=1/3:6
Step-by-step explanation:
x:11=x/11 so
x/11=1/3/6
x /11=1/3*6
x=11/18
