Answer:
Where are the answer choices
Step-by-step explanation:
Answer:
She jogs at a speed of 7mph
Step-by-step explanation:
Distance to the Park=21 miles
Let her Speed be r( miles/hour)
Time taken= t hour
Therefore her Speed, r= 21/t .....(I)
Distance on her Return Trip= 28 miles
On her return trip, the time is 1 hour longer, therefore time taken=(t+1) hour
Speed , r =28/(t+1) ........(ii)
Since her speed is the same
21/t=28/(t+1)
Cross Multiplying
21(t+1)=28t
21+21t=28t
21=28t-21t
21=7t
Therefore her time, t=3
From (I),
Speed r= 21/t= 21/3 =7 miles per hour
What is the missing sign between 3 and 2? I assume that it's multiplication sign, or *
3*2=6 (twice three is 6, because 3+3=6)
so the result of 3*2x is 6x, because 2x is actually 2*x, so we have 3*2*x - we are allowed to simplify this!
and 6 is the coefficient: the number by which a variable is multiplied.
Answer:
18 boys
Step-by-step explanation:
18=6x3
6x4=24
24+18=42
The sales tax is $1.40 and the cost is $21.50. I think!
