gjimesofia gjimesofia

20-08-2020
Mathematics

contestada

Simplify the expression 3a + b, when a=1.4 -2x and b=-0.2x + 1.7*

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eunice1234 eunice1234

20-08-2020

Answer:5.9-6.2x

Step-by-step explanation:

a=1.4-2x

b=-0.2x+1.7

3a+b

=3(1.4-2x)+(-0.2x+1.7)

=4.2-6x-0.2x+1.7

=4.2+1.7-6x-0.2x

=5.9-6.2x

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saraharif006 saraharif006

20-08-2020

Answer:

Step-by-step explanation:

3a + b

a = 1.4 - 2x

b = -0.2x + 1.7

3 ( 1.4 - 2x ) + -0.2x + 1.7

= 4.2 - 6x - 0.2x + 1.7

= 4.2 + 1.7 - 6x - 0.2x ( by rearranging the like terms )

= 5.9 - 6.2 x

hope this helps

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