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kap26 [50]
3 years ago
6

Please help with the problem above

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
6 0

Answer:

The answer would be -9x^2+x-8

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A car and a motorcycle leave the city at the same time and drive to a lake that is 120 km away. The speed of the motorcycle is 2
iris [78.8K]

Answer:

  • 40 km/h and 60 km/h

Step-by-step explanation:

Let the speed of the car is x, then the speed of motorcycle is x + 20

The distance = 120 km

<u>Time:</u>

  • 120/x = 120/(x + 20) + 1
  • 120(x + 20) = 120x + x(x +20)
  • 120x + 2400 = 120x + x² + 20x
  • x² + 20x = 2400
  • x² + 2*10x + 10² = 2500
  • (x + 10)² = 50²
  • x  + 10 = 50
  • x = 40

Speed of the car is 40 km/h

Speed of the motorcycle is 60 km/h

3 0
2 years ago
Read 2 more answers
Can someone show me what is 5% of 34 and show me how to breakdown the equation?
vesna_86 [32]
The answer for this problem is 1.7 I think I’m not sure
4 0
3 years ago
If you have 30$ and you need to find 8%, and add to 30$ then find 15% of that, and what’s your total?
stira [4]

Answer:

Our total amount value is $4.86.

Step-by-step explanation:

The total amount given is $30.

Now  8 % of $30 = \frac{8}{100}  \times 30 = 2.4

or, 8% of $30  = $2.4

Now adding $30 and $2.4,

$ 30 + $2.4  = $32.4

Finding 15% of the total $32.4,

we get  \frac{15}{100} \times 32.4 = 4.86

or, 15% of $32.4   = $4.86

hence, our total amount value is $4.86.

5 0
3 years ago
Please help
Sladkaya [172]

Answer:

Step-by-step explanation:

The answer is d.

6 0
3 years ago
Read 2 more answers
Solve for the variable in the following inequality<br><br> 18 ≥ 6x
baherus [9]

Answer:

3 <u>> </u>x

Step-by-step explanation:

(Sorry if im wrong)

Divide both sides by 6

18/6 <u>></u> 6x/6

3 <u>></u> x

6 0
3 years ago
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