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Lelechka [254]
3 years ago
12

Two cars started from the same place at the same time but travelled in opposite directions. After 9 hours they were 910 kilomete

rs apart. If the speed of one car is 10 kilometers per hour slower than the other what were their speeds per hour
Mathematics
1 answer:
Bond [772]3 years ago
7 0

Answer:

55.55 and 45.55

Step-by-step explanation:

Let the car 1 speed be x km/hr and car 2 speed be x-10 km/hr.

Their relative velocity is 2x-10.

Distance covered in 9 hrs=9(2x-10).

18x-90=910, x=55.55 km/hr, x-10=45.55km/hr

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Solve for x. Answer must be greater than 76<br> 34+12x&lt;76
Valentin [98]

Answer:

x < 3.5

Step-by-step explanation:

34 + 12x < 76

12x < 76 - 34

12x < 42

x < 42 ÷ 12

x < 3.5

6 0
3 years ago
Which equation can be used to solve for b?
jenyasd209 [6]
It is the last answer choice
6 0
3 years ago
3.
kherson [118]

Answer:

The answer would be A/B=H

Step-by-step explanation:

To get rid of the B that is connected to the H, you would do the opposite of what they used. Meaning since the two were multiplied you would divide them. So, you would take your b and divide it on both sides of the equal sign. B and B cancels each other out so you are left with A/B which equals H.

7 0
3 years ago
Please help me. I'll give you guys a brainliest. Which proportional relationship has the greatest unit rate: the table or the eq
Trava [24]

Answer:

is there a picture?

Step-by-step explanation:

3 0
3 years ago
Janine worked 15 hours last week. One job as a clerk in a sporting goods store paid her ​$8.47 per​ hour, while her job giving p
lorasvet [3.4K]

Answer:

she worked 9 hours at sporting goods store and 6 hours on piano lessons.

Step-by-step explanation:

total hours=15

8.47x + 17(15-x) = 178.23

8.47x + 225 - 17x = 178.23

225 - 178.23 = 17x - 8.47x

76.77 = 8.53x

x = 76.77 / 8.53

x = 9

therefore she worked 9 hours at sporting goods centre and the remaining hours (15-9) giving piano lessons.

4 0
3 years ago
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