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3 years ago

10

Determine the number of solutions to the following system of equations. y=-3x^2-4x+7 and 3x+2y=18

1 answer:

siniylev [52]3 years ago

5 0

Answer:

Step-by-step explanation:

y=-3x²-4x+7...(*)

3x+2y=18...(**)

use (*) put the value of y in (**) :

3x +2(-3x²-4x+7)=18

3x-6x²-8x +14 -18 = 0

-6x²-5x- 4 = 0

6x²+5x+4 = 0

delta = b² - 4ac a = 6 b=5 c =4

delta = 5² - 4(6)(4)= 25 -96= -71 negatif

so no reals solution

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Point G is between F and H on line FH. Use the given information solve for x and then find FG AND GH.

Viktor [21]

Answer:

X=6

FG=31

GH=22

Step-by-step explanation:

Equation: FG+GH=FH

rewrite with values

4x+7 + 5x-8 = 53

combine like terms

9x-1 = 53

add 1 to both sides

9x = 54

divide by 9

x = 6

use 6 end solve for FG and GH

FG = 4(6) + 7 = 31

GH = 5(6) - 8 = 22

Check your answers.. Do FG and GH add up to equal FH (53)?

31 + 22 = 53

I hope this made sense.

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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