Which expression is undefined?

Mathematics

2 answers:

algol [13]3 years ago

6 0

Answer:

C. $\frac{4}{0}$

Step-by-step explanation:

you cannot divide by zero, therefore option C is the correct choice because $\frac{4}{0}$ means 4 ÷ 0.

if 0 was the numerator, like in $\frac{0}{4}$ or 0 ÷ 4, the answer would be 0 because 0 divided by 4 is 0. this can be kind of confusing at times, but just remember that as long as 0 is the denominator in a fraction (meaning the 0 is under the fraction bar), the answer will always come out as undefined because you can't divide by 0.

i hope this helps! have a great day <3

kari74 [83]3 years ago

3 0

Answer:

C. 4/0

Step-by-step explanation:

You can't divide 4 by 0.

A. you would have gotten -0.5

B. you would have gotten 0

D. you would have gotten 0

Hope this help!! :)

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6 x 10^-2 is how many times a large as 2 x 10^-8?

Diano4ka-milaya [45]

Answer:

the number $6\,\,\,10^{-2}$ is three million times larger than $2\,\,\,10^{-8}$

Step-by-step explanation:

To answer this, just do the quotient of the first one over the second one, and use the rules for quotient of exponential expressions of the same base:

$\frac{6\,\,\,10^{-2}}{2\,\,\,10^{-8}} =\frac{6}{2} \,\frac{10^{-2}}{10^{-8}} =3\,\,\,10^{-2+8}=3\,\,\,10^6=3000000$

So the answer is: the number $6\,\,\,10^{-2}$ is three million times larger than $2\,\,\,10^{-8}$

3 0

3 years ago

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When flying at an altitude of 5 miles, the lines of sight to the horizon looking north and south make about a 173.7 degree angle

oksian1 [2.3K]

5 miles high is one of the sides of a triangle depending on accuracy level
h^2=x^2+y^2
we don't have 2 distances
Tan A=O/a
O=a tan A
We solve for O because the angle is at the top of the line going up and we want the opposite angle that is along the ground
O=5×tan(173.7/2)=90.854033512
The distance he can see is:
90.85*2~181.7 miles

Now we need to find the distance between lines:
The north south distance between each line is 69 miles
thus the number of degrees he will see will be:
181.7/69
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4 years ago

Why might algebra tiles not be a good tool to use to factor x2 + 18x + 80? Explain

ehidna [41]

Hello!

Explanation:

First, you had to add by the similar elements.

$2x+18x=20x$