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3 years ago

What are some examples of Rational Numbers and Integers?

1 answer:

8 0

First, a integer is a whole number positive or negative.

For example: 2,5,7,2000000,10,400,-10,-400,2848993

These are all integers.

A rational number is a real number that can be described by a integer:

2, 57 6747374

These are all rational numbers.

Extra:

A irrational number is a real number that can’t be described with a integer.

For example,

Square root of 3. Square root of 5 etc

Hope this helped

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shtirl [24]

Answer:

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Mary's dog should be given 208 mg of medicine.

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3 years ago

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9/10....................................

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Answer:

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Step-by-step explanation:

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3 years ago

An isosceles trapezoid ABCD with height 2 units has all its vertices on the parabola y=a(x+1)(x−5). What is the value of a, if p

horrorfan [7]

Answer:

a = -0.3575

Step-by-step explanation:

The points A and D lie on the x-axis, this means that they are the x-intercepts of the parabola, and therefore we can find their location.

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This gives

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Now given the coordinates of A, we are in position to find the coordinates of the point B. Point B must have y coordinate of y=2 (because the base of the trapezoid is at y=0), and the x coordinate of B, looking at the figure, must be x coordinate of A plus horizontal distance between A and B, i.e

$B_x=A_x+\frac{2}{tan(60)} =-1+\frac{2\sqrt{3} }{3}$

Thus the coordinates of B are:

$B=(-1+\frac{2\sqrt{3} }{3},2)$

Now this point B lies on the parabola, and therefore it must satisfy the equation $y=a(x+1)(x-5).$

Thus

$2=a((-1+\frac{2\sqrt{3} }{3})+1)((-1+\frac{2\sqrt{3} }{3})-5)$

Therefore

$a=\frac{2}{((-1+\frac{2\sqrt{3} }{3})+1)((-1+\frac{2\sqrt{3} }{3})-5)}$

$\boxed{a=-0.3575}$

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3 years ago

Use a table to write a proportion<br><br> Am I correct, or do I need to switch 6 and 8?

olga2289 [7]

Answer:

Yes I believe that is correct.

Step-by-step explanation:

Im not sure why the m is first because it would be 180 miles first but I think you are correct, I think you should wait for another answer tho because I am not 100 percent sure. :)

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3 years ago