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
Valentin [98]
3 years ago
15

A student claims that 1,2,3 and 4 are the zeros of a cubic polynomial function. Explain why the student is mistaken. Give an exa

mple to support your answer.
Mathematics
1 answer:
postnew [5]3 years ago
8 0
A cubic function only has 3 solutions at which x = 0, never 4. For example the function y = y = x^{3} + 3x^{2} + 2x gives the solutions:
x = 0, x = -1 and x = -2
You might be interested in
Find the simply interest earned on an investment of $15,000 at a rate of 5.25% for two years.
uysha [10]
Ill show you step by step.

This is what the equation should look like 

Y=Initial value(1+/- Increasing or Decreasing value)^2 Which stands for time

So Y=15,000(1+.0525)^2

So you need to do 1.0525 to the 2nd power Which equals 1.10775625

So now you need to do 15,000(1.10775625)
------------------------------------------------------------------------------------
Which equals <span>16616 rounding to the nearest Ones

16616.3 rounding to the nearest tenth</span>
3 0
3 years ago
Read 2 more answers
Which equation is not a polynomial.
babymother [125]
A. -sqrt(2)

Explanation:
there are no degrees, etc
7 0
3 years ago
Dani experimented with a dollar bill and the copy machine a dollar bills length is 6.1 inches and width is 2.6 inches, she reduc
scoray [572]
6.1inches * 80% = 4.88inches
100% - 15% = 85%
4.88 inches * 85% = 4.148inches
7 0
3 years ago
There are three urns that each contain 10 balls. The first contains 3 white and 7 red balls, the second 8 white and 2 red, and t
malfutka [58]

Answer:

(a) 0.0520

(b) 0.3699

Step-by-step explanation:

Let E_{1},E_{2},E_{3} be the events of selecting urn 1, urn 2 and urn 3 respectively.

So, P(E_{1})=P(E_{2})=P(E_{3})=\frac{1}{3}

Let W be the event of drawing a white ball.

Now, probability of drawing 2 white balls from urn 1 is given as:

P(W\cap W \cap E_{1})=P(E_{1})\times P((W\cap W)/E_{1})\\P(W\cap W \cap E_{1})=\frac{1}{3}\times (\frac{3}{10})^{2}=\frac{9}{300}

Probability of drawing 2 white balls from urn 2 is given as:

P(W\cap W \cap E_{2})=P(E_{2})\times P((W\cap W)/E_{2})\\P(W\cap W \cap E_{2})=\frac{1}{3}\times (\frac{8}{10})^{2}=\frac{64}{300}

Probability of drawing 2 white balls from urn 3 is given as:

P(W\cap W \cap E_{3})=P(E_{2})\times P((W\cap W)/E_{2})=\frac{1}{3}\times 1=\frac{1}{3}............. (as all balls are white only)

Now, probability of drawing 2 white balls is the sum of all the above probabilities and is given as:

P(2W)=P(W\cap W \cap E_{1})+P(W\cap W \cap E_{2})+P(W\cap W \cap E_{3})\\P(2W)=\frac{9}{300}+\frac{64}{300}+\frac{1}{3}\\P(2W)=\frac{9}{300}+\frac{64}{300}+\frac{100}{300}=\frac{9+64+100}{300}=\frac{173}{300}

(a)

Probability of selecting urn 1 given that 2 white balls are drawn is:

P(E_{1}/2W)=\frac{P(E_{1})\times P(2W/E_{1})}{P(2W)}\\P(E_{1}/2W)=\frac{\frac{9}{300}}{\frac{173}{300}}=\frac{9}{173}=0.0520

Therefore, probability of selecting urn 1 given that 2 white balls are drawn is 0.0250.

(b)

Probability of selecting urn 2 given that 2 white balls are drawn is:

P(E_{2}/2W)=\frac{P(E_{2})\times P(2W/E_{2})}{P(2W)}\\P(E_{2}/2W)=\frac{\frac{64}{300}}{\frac{173}{300}}=\frac{64}{173}=0.3699

Therefore, probability of selecting urn 2 given that 2 white balls are drawn is 0.3699

8 0
4 years ago
The four points (−2, 5), (−2, −1), (6, −1), and (3, 5) are the vertices of a polygon. What is the area, in square units, of this
crimeas [40]
Look at the picture.

The polygon is a right-angled trapezoid.

The area is:
A=\frac{a+b}{2} \times h

The points (-2,-1) and (6,-1) lie on the same horizontal line, so the distance between them is 6-(-2)=6+2=8. The length of a is 8 units.
The points (-2,5) and (3,5) lie on the same horizontal line, so the distance between them is 3-(-2)=3+2=5. The length of b is 5 units.
The points (-2,5) and (-2,-1) lie on the same vertical line, so the distance between them is 5-(-1)=5+1=6. The length of h is 6 units.

A=\frac{8+5}{2} \times 6=\frac{13}{2} \times 6=13 \times 3=39

The area is 39 square units.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which graph represents an event function?
    12·1 answer
  • Percent notation what is the meaning
    11·1 answer
  • Solve this expression:-4x\15=9
    9·1 answer
  • Find five rational numbers between 2/3 and 4/5
    8·1 answer
  • Really need this, click on photo if neccessary ​
    10·1 answer
  • From a group of 25 employees, you have to choose a set of six to be team leaders. How many different sets of team leaders are po
    9·1 answer
  • A wheel for Lisa's bike has a diameter of 24 inches. What is the circumference, C, in inches? Use 3.14 for π
    5·1 answer
  • You own 80 rabbits. The momma rabbit has 10 babies every month. Write a
    5·1 answer
  • Whad does a scalene triangle look like?
    6·2 answers
  • WHAT IS THE CO-EFFICIENT OF b in the expression b^2 - b5 + 18?​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!