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3 years ago

For brainiest:):):):):):):)

Mathematics

2 answers:

Kay [80]3 years ago

8 0

Answer:

#5 decimal: 0.625 percent 62.5%

#6 decimal: 0.16 percent 16.666%

#7 decimal:3.6667 percent 366.67%

#8 decimal:0.003 percent 0.3%

Step-by-step explanation:

Hopes this helps

lora16 [44]3 years ago

3 0

Answer:

0.625 and 62.5%
0.17 and 17%
3.7 and 367%
0.003 and 0.3%

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Answer:

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Step-by-step explanation:

y = 9x^2 + 9x – 1

first isolate the x terms

y = 9(x^2 +x) -1

then add 1/4 inside the brackets to make it a perfect square trinomial (half of the coefficient of the x term squared is how we get 1/4)

since we just added 1/4 we need to subtract what we just added to balance the equation. so 1/4 times 9 is 9/4 ( the number we just added to the equation). then you subtract 9/4 outside of the brackets.

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3 years ago

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almond37 [142]

Answers:

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Vertical Line: x = 8

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Explanation:

All horizontal lines are of the form y = k, for some constant k. We want the horizontal line to pass through (8,5), meaning every point on this horizontal line must have y coordinate 5. Therefore, y = 5 is the equation of the horizontal line. Two such points on this line are (1, 5) and (8, 5). All that matters is the y coordinate is 5. The x coordinate can be anything you want. The slope of any horizontal line is 0.

Flipping things around, all vertical lines will have the x coordinate of each point be the same value. Draw a vertical line through (8,5) and note how each point has x coordinate of 8. Two such points are (8,1) and (8,5). Therefore, the equation of the vertical line is x = 8. The y coordinate can be any value you want. The slope of any vertical line is undefined. Unlike the horizontal line, we cannot write this equation in slope intercept form (namely because the slope isn't defined).

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