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ANEK [815]
3 years ago
15

For what values (cases) of the variables the expression does not exist: a / a−b

Mathematics
1 answer:
Sliva [168]3 years ago
4 0

Answer:

a=b

Step-by-step explanation:

When the denominator is zero, the expression is undefined

a-b=0

a=b

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HELP. How long is the minor axis for the ellipse shown below?
kifflom [539]

Given:

The equation of ellipse is

\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1

To find:

The length of the minor axis.

Solution:

The standard form of an ellipse is

\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1      ...(i)

where, (h,k) is center, if a>b, then 2a is length of major axis and 2b is length of minor axis.

We have,

\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1      ...(ii)

On comparing (i) and (ii), we get

b^2=16

Taking square root on both sides.

b=\pm 4

Consider only positive value of b because length cannot be negative.

b=4

Now,

Length of minor axis = 2b

                                  = 2(4)

                                  = 8

So, the length of minor axis is 8 units.

Therefore, the correct option is B.

8 0
2 years ago
Ok so the equation is 45+x=2x+15
sleet_krkn [62]

Answer:

y=45+x

y=2x+15

x=30

Step-by-step explanation:

3 0
2 years ago
Answer the question on the image <br><br><br><br> ty :P
sattari [20]
Answer : 7 or 7/1

step by step explanation:
6 0
3 years ago
What is the slope of a line that is perpendicular to the line whose equation is 7x−3y=10?
Sonja [21]

Since this equation is already in standard form, there is no need to convert it. Standard form is Ax + By = C. In this equation, 7 = A, 3 = B, and 10 = C. From standard form, Ax + By = C equals negative A over B.

7x + 3y = 10

↓

\displaystyle\ m= \frac{-7}{-3}

Then you'd simplify.

\displaystyle\ m=\frac{7}{3}

The slope cannot be simplified any more, so this would be the final answer.

|

|

<em>- Marlon Nunez</em>

7 0
2 years ago
Can someone please help me?
Alisiya [41]

Answer:

Step-by-step explanation:

That'd be the Substitution Property.  Substitute -2 for x in x + 8 = 6 and arrive at the true statement 6 = 6.

4 0
3 years ago
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