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
valentinak56 [21]
3 years ago
10

How many terms does the polynomial x^2+xy-y^2 have

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

3 TERMS

Step-by-step explanation:

You might be interested in
When you multiply or divide an inequality by a negative number, keep the inequality symbol the same. TrueFalse
sweet [91]
Answer is to the question is false
8 0
3 years ago
Cayenne bought 20 pencils for 1.60 dollars at that rate how much would 35 pencils cost ​
yanalaym [24]
35 pencils would cost $2.80,


$1.60 / 20 = $.08
Each pencil costs $0.08 each

.08 * 35 = 2.80
4 0
3 years ago
A candidate for a US Representative seat from Indiana hires a polling firm to gauge her percentage of support among voters in he
UkoKoshka [18]

Answer:

a) The minimum sample size is 601.

b) The minimum sample size is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

For this problem, we have that:

We dont know the true proportion, so we use \pi = 0.5, which is when we are are going to need the largest sample size.

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

a. If a 95% confidence interval with a margin of error of no more than 0.04 is desired, give a close estimate of the minimum sample size that will guarantee that the desired margin of error is achieved. (Remember to round up any result, if necessary.)

This is n for which M = 0.04. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.04 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.04\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.04}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.04})^2

n = 600.25

Rounding up

The minimum sample size is 601.

b. If a 95% confidence interval with a margin of error of no more than 0.02 is desired, give a close estimate of the minimum sample size necessary to achieve the desired margin of error.

Now we want n for which M = 0.02. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.02\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.02}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.02})^2

n = 2401

The minimum sample size is 2401.

4 0
3 years ago
Find the distance between Points C(4, 6) and D(−5, 6) without using a coordinate plane.
balu736 [363]

Answer:

-1, 0

Step-by-step explanation:

i think <33

3 0
2 years ago
The following conditional statement true. what is the statements converse and is the converse true?
Lera25 [3.4K]
A converse is when we switch the hypothesis and conclusion, so "if a figure is a square then it has four right angles" the converse would be "If a figure has four right angles then it is a square" Which is false because of rectangles, your answer is D.
4 0
3 years ago
Other questions:
  • Zach uses his car for business and must keep accurate driving records so that his company will reimburse him for car expenses. W
    11·1 answer
  • The equation y=1/3xis the boundary line for the inequality y&gt;1/3x. Which sentence describes the graph of the inequality
    12·1 answer
  • A rectangle has an area of x square units. The rectangle is dilated to create a new rectangle with an area of 9x square units. D
    12·1 answer
  • Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of stud
    13·1 answer
  • From 1,126 meters above sea level, Dedra took off in her helicopter and ascended 228 meters. What is Dedra's elevation now?
    15·1 answer
  • Which of the following is an example of simple harmonic motion?
    12·1 answer
  • Can somebody please help me here is the question
    13·1 answer
  • JKLM is a rhombus. KM is 20 and JL is 48. Find the perimeter of the<br><br> rhombus.
    13·1 answer
  • Ruth packs 2 muffins into a gift box. She has 3 flavors of muffins to choose from: lemon,
    9·2 answers
  • An adult African elephant weighs approximately 8 tons. Which comparison is true
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!