How do u simplify this expression 6-7n-2n-8

Mathematics

1 answer:

maxonik [38]3 years ago

4 0

Combine like terms: (Pay attention to the integer sign before each term)
-7n+-2n=-9n
6+-8=-2
-9n-2

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How do you graph 3x-4y=-4 for the domain D:{8,4,0,-4,-8}

kotegsom [21]

3x - 4y = -4
3x - 3x - 4y = -4 - 3x
 -4y = -4 - 3x
 -4y = -3x - 4
 -4 -4
 y = 0.75x + 1
D:{8, 4, 0, -4, -8} 
D{8}
y = 0.75x + 1
y = 0.75(8) + 1
y = 6 + 1
y = 7
(x, y) = (8, 7)
D{8}, R{7}

D{4}
y = 0.75x + 1
y = 0.75(4) + 1
y = 3 + 1
y = 4
(x, y) = (4, 4)
D{4}, R{4}

D{0}
y = 0.75x + 1
y = 0.75(0) + 1
y= 0 + 1
y = 1
(x, y) = (0, 1)
D{0}, R{1}

D{-4}
y = 0.75x + 1
y = 0.75(-4) + 1
y = -3 + 1
y = -2
(x, y) = (-4, -2)
D{-4}, R{-2}

D{-8}
y = 0.75x + 1
y = 0.75(-8) + 1
y = -6 + 1
y = -5
(x, y) = (-8, -5)
D{-8}, R{-5}

D{8, 4, 0, -4, -8}
R{7, 4, 1, -2, -5}
{(8, 7), (4, 4), (0, 1), (-4, -2), (-8, -5)}

3 0

3 years ago

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Helen [10]

Answer:

7 seconds

Step-by-step explanation:

Hello There!

I had created a graph to make it easier to understand

So when y = 0 is when the ball is at the ground

when y = 0 x = 7 so it took about 7 seconds for the ball to hit the ground