Let a be a nonzero rational number. Is rational or irrational? Prove your answer by picking a value for a and simplifying

Mathematics

1 answer:

Kobotan [32]3 years ago

3 0

Answer:

there is no expression to answer this based off of

Step-by-step explanation:

we can't answer an incomplete question sorry try again and maybe then

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Give two ways to write the expression as a phrase.<br><br> $4w$

Assoli18 [71]

Answer: 4^1 or 4^1w

Step-by-step explanation:

There is 4 and one w therefore, you have 4^1 or, 4^1w

7 0

3 years ago

. A tree casts a shadow that is 10 metres long. If the angle of elevation to the top of the tree from the ground at the end of t

Ghella [55]

Answer:

Tree = 17.32 m

Step-by-step explanation:

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3 years ago

What is the area of the triangle in the diagram?

Schach [20]

Answer:

$\frac{(a-b)^2+b^2}{a^2}$

which agrees with the first choice (A) in your list of possible answers

Step-by-step explanation:

Notice that the area of the outer square is given by the square of it side $(a)$ .Then the outer area is given by: $a^2$

Now, the inner square's area we calculate by subtracting from the outer area four equal right angle triangles (those shaded in grey in the figure provided). Each of such right angle triangles have an area given by the general formula of a triangle's area:

$Area_{triangle}= \frac{base\,*\,height}{2} =\frac{(a-b)\,b}{2} =\frac{ab-b^2}{2}$