Answer:
3/4 hour
Step-by-step explanation:
1/3 + 1/6 + 1/4 = 4/12 + 2/12 + 3/12 = 9/12
12*5 = 60
9*5 = 45
45/60 = 3/4
Divide miles driven by time and compare them.
Deena: 585 /9 = 65 miles per hour
Kristen: 605 /11 = 55 miles per hour
Deena drove at a faster rate because 65 is greater than 55.
The number of real solution of the system y =
and y = 3x - 2 is zero
The system of equations are
y = 
y = 3x - 2
Then the equation will be
= 3x - 2
Move 3x - 2 to the left hand side of the equation
- 3x + 2 = 0
Find the value of
- 4ac
Here value of a = 3
The value of b = -3
The value of c = 2
Substitute the values in the expression
=
- 4×3×2
= 9 - 24
= -15
Here the value of
- 4ac is -15
Therefore there is no real valued solution
Hence, the number of real solution of the system y =
and y = 3x - 2 is zero
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Answer:
25.02 s
Step-by-step explanation:
velocity = distance/time
rearrange for time:
time = distance/velocity
time = -58.3m/-2.33 m/s
time = 25.02s
Answer:
70
Step-by-step explanation:
200 - 130