Mathematics, 23.07.2019 17:00 Requiem3327

What is the result of adding -2.9a + 6.8 and 4.4a - 7.37?

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Answer from: kimmosley80

(-2.9a + 6.8 ) + (4.4a - 7.37)

= -2.9a + 6.8 + 4.4a - 7.37

= - 2.9a + 4.4a + 6.8 - 7.37

= 1.5a -0.57

1.5a - 0.57

Answer from: priscillavaladez1112

Hey there :)

Adding - 2.9a + 6.8 and 4.4a - 7.37

- 2.9a + 6.8 + ( 4.4a - 7.37 )

Combine the like terms
- 2.9 + 4.4a + 6.8 - 7.37

1.5a - 0.57 → Your answer

Answer from: Quest

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step-by-step explanation:

Answer from: Quest

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

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