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OLga [1]
3 years ago
15

A car leaves town, A at the speed of 90 km/h. Three hours later leaves the same city another car in pursuit of the first with a

speed of 120 km / h. How much time will take to reach it?
Select the appropriate response:
A) t = 6hrs
B) t = 12 hrs
C) t = 30 min
D) None of the answers are correct
Mathematics
2 answers:
Mumz [18]3 years ago
6 0

Answer:

d

Step-by-step explanation:

never [62]3 years ago
5 0

Answer:

D) None of the answers are correct

Step-by-step explanation:

Let t be the time since the first car leaves

Distance of first car:

90t

Distance of second car:

120(t - 3)

90t = 120(t - 3)

90t = 120t - 360

360 = 30t

t = 12

The second car takes 12-3 = 9 hours to reach it

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At 12:45 Jimmy left his home in Pinetrees and cycled to visit his grandmother in Oakville. On his
olchik [2.2K]

t=45min
d=4km

45min/60min = 0.75 hours

v=d/t
v=4km/0.75hours
v=5.33km/hour. So the answer is B. 45 minutes.
8 0
3 years ago
Data were collected on the number of days per week that members visit a certain fitness center. The values varied from 0 to 7, a
pshichka [43]

Answer:

D

Step-by-step explanation:

choice A is not guaranteed since the values varied from 0 to 7.

choice B seems alright, but doesn't include about or anything about the long run.

choice C is incorrect because 50% are less than 3.12 and 50% are greater than 3.12.

choice D seems pretty good, since it says average, long run, approach, etc.

choice E is incorrect because it says "will be". It is not definite.

8 0
3 years ago
6. Find the volume of the composite figure. ​
Elenna [48]

Answer:

4×6=24

24×15=360

360×2=720

15-12=3

3×6=18

18×18=324

324+720=1044inches

4 0
3 years ago
Each square on Olivia's chessboard is 11 square centimeters.A chessboard has 8 squares on each sid.To the nearest tenth,what is
stellarik [79]
First, find the length of one side of a square:
Area = side²
11 = s²
s = √(11) cm

Since there are 8 squares on each side, multiply the length of one square by 8 to get the length of 8 squares.
√(11) * 8 = 8√(11) ≈16.5 cm

Hope this helps!
5 0
3 years ago
Solve the quadratic equation 6x2 + 1 = 5x. Show your work.
Artyom0805 [142]

Answer:

<h2>Factors = (3x - 1) (2x - 1)</h2><h2>values :- x = 1/3 , 1/2</h2>

Step-by-step explanation:

= > 6x^2 + 1 = 5x

• Bring it in the standard form,

= > 6x^2 - 5x + 1 = 0

= > 6x^2 - (3 + 2)x + 1 = 0

= > 6x^2 - 3x - 2x + 1 = 0

• Take out common

= > 3x (2x - 1) - 1 (2x - 1) = 0

= > (3x - 1) (2x - 1) = 0...factors

= > x = 1/3 and 1/2... values of x

<h2>Hope it helps you!! </h2>

7 0
3 years ago
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