Write the equation of a line that has a slope of 7 and a y-intercept of -3.

1 answer:

5 0

The answer would be A) y=7x-3. this would be the answer because slope intercept is y=mx+b. m is the slope and b is the y intercept. The slope is positive 7 which means it could be a or c, but the y intercept is negative 3 which means the answer has to be a

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Answer:

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Use the grouping method to factor the polynomial below completely 3x^3+9x^2+5x+15

Tomtit [17]

Answer:

(x+3)( 3x^2 +5)

Step-by-step explanation:

3x^3+9x^2+5x+15

Split into two groups

3x^3+9x^2 +5x+15

Factor 3x^2 out of the first group and 5 out of the second group

3x^2 ( x+3) + 5(x+3)

Factor out x+3

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3 years ago

At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was

lina2011 [118]

By definition we have the following equation:
t = d / v
Where,
t: time
d: distance
v: speed
For this case we have:
d / 30 + d / 4 = 17
Rewriting we have:
2d + 15d = 17 (60)
17d = 17 (60)
d = 60 mi
Then, the walking time is
t = d / v
t = 60/4
t = 15 hours
Answer:
She walked
t = 15 hours

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