3 years ago

Rewrite the function by completing the square. f(x) = x² +6x+87

Mathematics

1 answer:

o-na [289]3 years ago

8 0

F(x) = ( x + 3 ) ^2 + 78 is your answer.

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A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles

dybincka [34]

Answer:

Step-by-step explanation:

A bag contains 8 red marbles, 3 blue marbles and 7 green marbles.

Total = 18 marbles.

Probability of drawing three red marbles = probability of drawing one red without replacement + probab of drawing another without reeplacement + probab of drawing a third without replacement.

Probability of drawing three red marbles = 8/18 + 7/17 + 6/16 = 0.4444 + 0.4118 + 0.3750 = 1.2312.

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3 years ago

Find y, if x = 60. A) 30° B) 35° 90 D) 45°

MaRussiya [10]

Answer:

A) 30°

Step-by-step explanation:

This is incomplete, but if you are looking for its complement, then set both angles equal to 90°:

$90° = 60° + y \\ \\ 30° = y$

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4 years ago

What is the slope of the line below ?

Sveta_85 [38]

Answer:

a. -2

Step-by-step explanation:

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3 years ago

If the top of a 4.50 m ladder reaches twice as far up a vertical wall as the foot of the

Free_Kalibri [48]

Answer:

4.02 meters.

Step-by-step explanation:

In the diagram, the length of the ladder is |AC|.

If the foot of the ladder is x meters from the base of the ladder

Then the distance of the ladder up the wall, AB=2x meters.

Using Pythagoras Theorem

$|AC|^2=|AB|^2+|BC|^2\\4.5^2=(2x)^2+x^2\\4.5^2=4x^2+x^2\\20.25=5x^2\\$Divide both sides by 5\\x^2=20.25\div 5\\x^2=4.05\\x=\sqrt{4.05}=2.01 feet$

Therefore, the distance of the ladder up the wall,

AB=2 X 2.01 =4.02 meters.

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3 years ago

Read 2 more answers

Hiya guys I really need help with this, any is appreciated

Ann [662]

Step-by-step explanation:

sorry we're is the question

7 0

3 years ago