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wariber [46]
3 years ago
13

-2a-9=6a+15 Idk how to this equation could someone plzz consider helping me?

Mathematics
1 answer:
ollegr [7]3 years ago
8 0

-2a-9=6a+15

Move 6a to the other side. Sign changs from +6a to -6a.

-2a-6a-9=6a-6a+15

-2a-6a-9=15

-8a-9=15

Move -9 to the other side. Sign changes from -9 to +9.

-8a-9+9=15+9

-8a=15+9

-8a=24

Divide both sides by -8

-8a/-8=24/-8

a=-3

Answer: a=-3

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Gina wilson unit 6 homework 4 <br> help with 6,8,and9
Bumek [7]

Answer:

  • Q6. x = 17
  • Q8. Yes, parallel
  • Q9. No, not parallel

Step-by-step explanation:

Q6. Solve for x

<u>Use ratios of similar sides</u>

  • 28/(82 - 28) = (2x + 8)/(5x - 4)
  • 28/54 = (2x + 8)/(5x - 4)
  • 14/27 = (2x + 8)/(5x - 4)
  • 14(5x - 4) = 27(2x + 8)
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  • 70x - 54x = 56 + 216
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  • x = 272/16
  • x = 17

Q8

If ratios are same, the lines are parallel

  • 41.8/33 = (102 - 45)/45
  • 41.8/33 = 57/45
  • 41.8*45 = 33*57
  • 1881 = 1881

Yes, lines are parallel

Q9

  • 38/19 = 52/24
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4 0
2 years ago
Over the first 20 games of the season, the distribution of a basketball team's scores is bell shaped with
weqwewe [10]

Answer:

j

Step-by-step explanation:

8 0
3 years ago
Help please it’s due hella soon also please leave a small explanation
murzikaleks [220]
1) y=3x-4
When x increases by 1, y increases by 3 so the slope is rise/run → 3
y-int is -4 bc y-value is -4 when x=0

2)y=-3x+4
When x increase by 2, y decreases by 6 so the slope is rise/run → -3
y-int is 4 bc y-value is 4 when x=0

3)y=-1/3x+4
When x increase by 3, y decreases by 1 so the slope is rise/run → -1/3
y-int is 4 bc you now have the equation y=-1/3x+b and u just have to plug in random point from the graph, so ex, 6 into x and 2 into y. You can get 4 as b in the equation.

4)y=1/3x-4
When x increases by 6, y decreases by 2 so the slope is rise/run → 1/3
y-int is -4 bc u do the same thing as 3)
For ex, plug in 6 for x and -2 for y and you can get -4 as the b in the equation.
6 0
3 years ago
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