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Step2247 [10]
3 years ago
13

How would I solve this and what is the answer.

Mathematics
1 answer:
SOVA2 [1]3 years ago
5 0

Answer:

b is -6 or -10

Step-by-step explanation:

\frac{1}{b}  =  \frac{1}{b  - 12}  +  \frac{ {b}^{2}  + 16b + 48}{ {b}^{2}  - 12b}  \\  \\  \frac{1}{b}  =  \frac{b + ( {b}^{2}  + 16b + 48)}{b(b - 12)}  \\  \\ b   - 12= b  + ( {b}^{2}  + 16b + 48) \\  {b}^{2}  + 16b + 60= 0 \\ (b + 6)(b + 10) = 0 \\ b =  - 6 \\ and \\ b =  - 10

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In the typing World 120 words in 3 minutes is average how many words could they type in 2 hours
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PLEASE TRY TO HELP I'M STRUGGLING
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Answer:

Step-by-step explanation:

The equation of a straight line can be represented in the slope intercept form as

y = mx + c

Where

m = slope = (change in the value of y in the y axis) / (change in the value of x in the x axis)

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7x+4y=3

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y = -7x/4 + 3/4

Comparing with the slope intercept form, slope = -7/4

If the line passing through the given point is perpendicular to the given line, it means that its slope is the negative reciprocal of the slope of the given line.

Therefore, the slope of the line passing through (6,-9) is 4/7

To determine the intercept, we would substitute m = 4/7, x = 6 and y = -9 into y = mx + c. It becomes

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The equation becomes

y = 4x/7 - 87/7

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3 years ago
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If a sprinkler waters 1/15 of a lawn in 1/5 of an hour, how much time will it take to water the entire lawn?
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Step-by-step explanation:

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3 years ago
Multiple please help me out. (picture is for question 4)
Cloud [144]

Answer:

1. 9/10

2. 1/5

3. 4/9

4. 1

Step-by-step explanation:

The general equation of the line is:

(y - y0) = m ( x - x0), where "m" represents the slope is: (y1 - y0) / (x1 - x0).

1. From the statement we know that (x1, y1) = (18, 17) and (x0, y0) = (8,8)

Then the slope is:

m= (y1 - y0) / (x1 - x0) = (17 - 8)/(18 - 8) = 9/10.

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2. From the statement we know that (x1, y1) = (8, 9) and (x0, y0) = (3,8)

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3. From the statement we know that (x1, y1) = (15, 15) and (x0, y0) = (6,11)

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m= (y1 - y0) / (x1 - x0) = (-4 - (-6))/(-5 - (-7)) = 2/2 = 1.

The slope is 1.

4 0
3 years ago
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