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olchik [2.2K]
3 years ago
5

3x+9=1x what’s the slope and intercept form

Mathematics
1 answer:
tresset_1 [31]3 years ago
5 0

Answer:

  this equation cannot be written in slope-intercept form

Step-by-step explanation:

The given equation is equivalent to ...

  2x +9 = 0 . . . . . subtract 1x

  x + 4.5 = 0 . . . . divide by 2

  x = -4.5 . . . . . . . the equation of a vertical line.

It has no y-intercept and its slope is undefined.

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7 0
3 years ago
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

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4 0
3 years ago
24. Find the area of the shaded region:
Monica [59]

Answer:

A = 5x³ + 17x² - 35x - 30

Step-by-step explanation:

the shaded area (A) is calculated as

A = outer area - inner area

   = (5x + 3)(x² + 4x - 10) - 3x(2x - 1) ← distribute parenthesis

   = 5x³ + 20x² - 50x + 3x² + 12x - 30 - (6x² - 3x)

  = 5x³ + 23x² - 38x - 30 - 6x² + 3x ← collect like terms

  = 5x³ + 17x² - 35x - 30

7 0
2 years ago
Read 2 more answers
Johnny took the math test and got 20 out of 25 qustions correct; what grade did Johnny make on the test?
meriva

Answer:

B: 80%

Step-by-step explanation:

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3 years ago
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