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Dima020 [189]
1 year ago
8

Solve the following systems of equations

Mathematics
1 answer:
Varvara68 [4.7K]1 year ago
6 0

Answer:

(-1;1) and (0;4)

Step-by-step explanation:

First of all, even if the system is of 4th degree, by looking at the shape of the equations I am expecting up to 2 solutions.

The easiest way to solve it, since both equation are in the form y= something, is to equate both RHSs.

3x^2+6x+4=-3x^2+4\\6x^2+6x=0 \rightarrow 6x(x+1)=0

which tells us that either x=0 or x=-1

Now we can replace these value of x in one of the two to finish our work: x=0\rightarrow y= 4

x=-1 \rightarrow y= -3+4=1

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33.9 million miles.

Step-by-step explanation:

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If a sprinkler waters 1 over 8 of a lawn in 1 over 4 hour, how much time will it take to water the entire lawn? (1 point)
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7 0
3 years ago
Read 2 more answers
A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is
Julli [10]

Answer:

The maximum safe rescue height is   104.6 feet above the height of  the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and  AB be the building  and Ladder making an angle of 72° as shown.

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Using Trigonometric ratio,

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So, the maximum safe rescue height is   104.6 feet above the height of

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3 years ago
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xxMikexx [17]

Answer:

D

Step-by-step explanation:

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