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
jekas [21]
4 years ago
15

Divide and simplify completely. Assume that no denominator equals zero. d^2-1/d^2-d divided by d - 1/d

Mathematics
1 answer:
kenny6666 [7]4 years ago
5 0
First, you should factor both the numerator and the denominator. Since the numerator is the difference of two squares, that can be factored into (d-1)(d+1); for the denominator, you can factor out d to get d(d-1). From there, you can reduce both the numerator and denominator by (d-1) to get (d+1)/d. If you need to simplify it further, I believe you can simplify it to 1+(1/d). 
You might be interested in
In a study to establish the absolute threshold of hearing, 80 male college freshmen were each seated in a soundproof room and a
Norma-Jean [14]

Answer:

Step-by-step explanation:

Hello!

To study the threshold of hering the researcher took a random sample of 80 male college freshmen.

The students underwent an audiometry test where a tome was played and they had to press a button when they detected it.  The researcher recorded the lowest stimulus level at which the tone was detected obtaining a sample mean of X[bar]= 22.2 dB and a standard deviation of S= 2.1 dB

To estimate the population mean, since we don't have information about the variable distribution but the sample size is greater than 30, you can use the approximation of the standard normal distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{S}{\sqrt{n} }

Where the semiamplitude or margin of error of the interval is:

d= Z_{1-\alpha /2} * \frac{S}{\sqrt{n} }

Using a 95% level Z_{0.975}= 1.965

d= 1.965 * \frac{2.1}{\sqrt{80} }

d= 0.46

The point estimate of the population mean of the threshold of hearing for male college freshmen is X[bar]= 22.2 db

And the estimation using a 95%CI is [21.74;22.66]

I hope this helps!

8 0
3 years ago
Help?? I could really use it
Lynna [10]

Answer:

16.5 m

Step-by-step explanation:

The triangle shown in the figure is a right triangle, so we can use the Pythagoreas Theorem.

a² + b² = c²

a² + 32² = 36²

a² + 1024 = 1296

a² = 272

a = √272

a = 16.5

Answer: 16.5 m

4 0
2 years ago
Given A = {(1, 3)(-1, 5)(6, 4)}, B = {(2, 0)(4, 6)(-4, 5)(0, 0)} and C = {(1, 1)(0, 2)(0, 3)(0, 4)(-3, 5)}, answer the following
Nuetrik [128]

Answer:

  Domain of set B: {2, 4, -4, 0}

Step-by-step explanation:

The domain of the function whose ordered pairs are listed in set B is the set of first numbers of those pairs: {2, 4, -4, 0}.

_____

<em>Comment on the question</em>

A "set" does not have a domain. A "function" has a domain. To make any sense of this question, we have to interpret the question to mean the function described by the ordered pairs in the set.

8 0
3 years ago
Round 17.4 to the nearest tenth.
djyliett [7]
17.4, since there are no other decimal number values.
5 0
3 years ago
Read 2 more answers
What has 2 fewer sides than a heptagon
AVprozaik [17]
A pentago Which Is A Five Side Figure and a heptagon is a seven sided figure
4 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify.<br> A12 over a7
    6·1 answer
  • I need help with 7 please
    15·1 answer
  • How do you know if a coordinate on a graph is positive or negative?
    8·2 answers
  • It is Marcie's first turn to roll. Which ratio shows the
    5·2 answers
  • The test scores of 32 students are listed below. Construct a boxplot for the data set and include the values of the 5-number sum
    9·1 answer
  • Hit or miss? I need the answer u chicken feet
    15·2 answers
  • the instantaneous growth rate r of a colony of bacteria t hours after the start of an experiment is given by the function r=0.01
    6·1 answer
  • What is the greatest negative integer?
    13·2 answers
  • The cost of a shirt was originally $ 40 but the price dropped to $32 because it was on sale. What was the percent change in the
    14·2 answers
  • What are the y-intercepts of this conic section?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!