1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Iteru [2.4K]
3 years ago
14

For what values of x is rational expression below undefined x-7/x^2-7x-8

Mathematics
1 answer:
Novay_Z [31]3 years ago
8 0
The values are x = 8 and x = -1.

To find the undefined values, we need to know when the denominator is zero.
To do this, we need to factor it and find the value that would make either factor equal to zero.

If factors to: (x - 8)(x + 1)

Therefore, the undefined values would be at 8 and -1.
You might be interested in
Is 4/6 greater than 4/7?
dexar [7]
Yes, to make it simpler and easier to tell, you could put both these fractions into decimals or percentages.

4/6 as a decimal would be .66 or 66%
4/7 as a decimal would be .57 or 57%

Hope this helps! :}
6 0
3 years ago
Read 2 more answers
If sin θ = cos 40°, 0<θ<90°, what is θ?
Bezzdna [24]

Answer:

θ =  50 degrees

Step-by-step explanation:

we have  sin θ = cos 40°

 θ = arcsin ( cos 40°)

and make sure θ is less than 90  and greater than 0

 θ = arcsin (0.766044443)

θ =  50 degrees

3 0
3 years ago
The sum of 3 odd consecutive integers are 93. find the 3 integers
Solnce55 [7]
Let, Your Integers = x, x+2, x+4
Now, x + x+2 + x+4 = 93
3x + 6 = 93
3x = 93 - 6
x = 87/3
x = 29
Then, x+2 = 31, & x+4 = 33

In short, Your Integers would be 29, 31, 33

Hope this helps!
4 0
3 years ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
likoan [24]

Answer:

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, x^2+4=6x

This can be written as ,  x^2-6x+4=0

We have to solve using quadratic formula,

For a given quadratic equation ax^2+bx+c=0 we can find roots using,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}  ...........(1)

Where,  \sqrt{b^2-4ac} is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}

\Rightarrow x=\frac{6\pm\sqrt{20}}{2}

\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}

\Rightarrow x={3\pm \sqrt{5}}

\Rightarrow x_1={3+\sqrt{5}} and \Rightarrow x_2={3-\sqrt{5}}

We know \sqrt{5}=2.23607(approx)

Substitute, we get,

\Rightarrow x_1={3+2.23607}(approx) and \Rightarrow x_2={3-2.23607}(approx)

\Rightarrow x_1={5.23607}(approx) and \Rightarrow x_2=0.76393}(approx)

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

7 0
3 years ago
Read 2 more answers
Suppouse you bought something that was priced at $6.95, and after sales tax the total bill was $7.61. What is the sale tax rate
leva [86]

Answer: sales tax of approximately .095 or 9.5%

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • If you got $40 a month all year how much does that equal
    10·1 answer
  • An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a
    15·1 answer
  • Please please help me out!!
    12·1 answer
  • Ann is buying a house that costs $250,000. She is making a down payment of 15 percent, and her closing costs will amount to 3 pe
    6·1 answer
  • There were 250 students attending a socon basketball game each row have 15 students how many rows are completely full how many s
    15·1 answer
  • Can you help me please?
    13·1 answer
  • Simplify the expression: show all ur steps/ wrk PLEASE,1+2x3-18/3+(5(2+2)]
    10·2 answers
  • Liz has two gardens and wants to build a fence around each. She wants to buy all the fencing at one time. The diagram below show
    12·1 answer
  • What does y equal y=-1+6
    15·1 answer
  • 6(a + 12) equivalent expressions
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!