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2 years ago

Solve 3x+9 so it has one solution

Mathematics

1 answer:

svet-max [94.6K]2 years ago

7 0

Answer:

3x+9=0

3x=-9

x=-9/3=-3 is your answer

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Which of the following scatterplots do not show a clear relationship and would not have a trend line?

UNO [17]

The second one because the points are all over, whereas the first one seems to have a positive trend - as x increases y increases.

Hope this helps!

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2 years ago

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2 years ago

ABCD is rectangle on a coordinate grid with side AB parallel to side CD. Side BC is perpendicular to AB. The slip of AB is 3/4.

dybincka [34]

The slope of BC is $\frac{-4}{3}$

Step-by-step explanation:

Let us revise some notes about slopes of lines

If two lines are parallel, then their slopes are equal
If to lines are perpendicular, then the product of their slopes is -1, that means if the slope of one is m, then the slope of the other is $\frac{-1}{m}$

∵ ABCD is a rectangle

∵ AB // CD

∴ The slope of AB = the slope of CD

∵ BC ⊥ AB

∴ The slope of BC × the slope of AB = -1

∵ The slope of AB = $\frac{3}{4}$

- To find the slope of BC reciprocal the slope of AB and reverse its sign

∴ The slope of BC = $\frac{-4}{3}$

The slope of BC is $\frac{-4}{3}$

Learn more:

You can learn more about the slope in brainly.com/question/9801816

#LearnwithBrainly

6 0

3 years ago

Divide fractions: 5/6 divided by 6/10 (leave as improper fraction if necessary)

tankabanditka [31]

Answer:

25/18

Step-by-step explanation:

5/6 / 6/10

K C F

5/6 * 10/6

50/36 = 25/18

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2 years ago

If Chris has 2 times as many nickels as quarters and they have a combined value of 210 cents, how many of each coin does he have

BlackZzzverrR [31]

Im pretty sure she has 6 quarters and 12 nickels since it it twice as much.

$0.25 x 6 =150

$0.5 x 12 =60

total = 210

8 0

2 years ago