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gizmo_the_mogwai [7]
3 years ago
11

Write the quadratic equation in standard form: 2x – 1=-x^2

Mathematics
1 answer:
klasskru [66]3 years ago
3 0

Answer: -x^2-2x-1

Step-by-step explanation:

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Which value must be added to the expression x^2+12x to make it a perfect square trinomial a:6 b:36 c:72 d:144
Ksivusya [100]

The answer would be 36. Why?


Because in the equation we would need to do (x + 6)(x + 6) to get a perfect square trinomial.


And 6 * 6 is 36.


So the whole equation would be: x^2 + 12 + 36.


Hope this helped! c:

7 0
3 years ago
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Draw and identify the coordinates of the image of the figure after a 180° rotation
sladkih [1.3K]

Answer:

Step-by-step explanation:

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A motor boat travels 60 miles down a river in three hours but takes five hours to return upstream. Find the rate of the boat in
Kryger [21]

Answer:

  • boat: 16 mph
  • current: 4 mph

Step-by-step explanation:

  speed = distance / time

The rate downriver is (60 mi)/(3 h) = 20 mi/h.

The rate upriver is (60 mi)/(5 h) = 12 mi/h.

The rate of the boat in still water is the average of these:

  (20 +12)/2 mi/h = 16 mi/h

The rate of the current is the difference between the boat speed and actual speed:

  16 mi/h - 12 mi/h = 4 mi/h

3 0
3 years ago
Solve for y:<br>5(x + y) = 20 + 3x​
son4ous [18]
5(x+y)= 20+ 3x
5x+5y=20+3x
5x+5y-3x=20+3x-3x
2x+5y=20
2x+5y-2x=20-2x
5y=-2x+20
5y/5=-2x/5+20/5
y=-2/5x+4

ANSWER: y=-2/5x+4
5 0
3 years ago
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21. Andre grew a plant for a science experiment. At the end of his
kotegsom [21]

Answer:

he answer is 140 minutes to plant 14 saplings.

Step-by-step explanation:

30 divided by 3=10

so it takes 10 minutes to plant one sapling.

10x14=140 so this is how you get your answer. im 99% sure

4 0
3 years ago
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