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3 years ago

What is the answer to 1.1x + 1.2x - 5.4 = -10

2 answers:

8 0

1.1x+1.2x-5.4=-10

11/10x+12/10x-54/10=10

11x/2.5+2^2-1*3/5x-3^3/5=-10

(11x)+2(2*3x)+2(-3^3)/2*5=-10

11x+2(6x)+2(-27)/2*5=-10

11x+2*6x-2*27/2*5=-10

11x+12x-54/2*5=-10

23x-54/2*5=-10

23x-54=-100

23x=-46

23x/23=-46/23

x=-2*23/23

x=-2

Luden [163]3 years ago

5 0

PEMDAS 1.1x + 1.2x = 2.3x -10 + 5.4 = -4.6 -4.6/2.3 = -2 Answer = -2

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Let

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y------> the number of teenagers

z------> the number of adults

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$2x+3y+5z=1,950$ ------> equation A

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<u>the answer is the option</u>

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