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Paraphin [41]
3 years ago
15

PLZ ANSWER ASAP PLZ Which is a solution to the equation 4b2 − 11b = 28 + 5b2? A) −5 B) −4 C) −3 D) 4

Mathematics
1 answer:
Dovator [93]3 years ago
7 0
D) 4
i think this is right
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Answer:

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Step-by-step explanation:

Given : A roller coaster train with 6 passenger cars and the front decoration has a mass of 3500 kg. when the train has the front decoration and only 4 passenger cars, it has a mass of 2400 kg.

To find : What is the mass of the decoration and of each passenger car?

Solution :

Let the mass of each passenger is x.

Let the mass of front decoration is y.

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Solving equation [1] and [2]

Subtract equation [2] from [1],

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x=550

Put value in [1],

6(550)+y=3500

3300+y=3500

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Therefore, The mass of each passenger is 550 kg.

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Step-by-step explanation:

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