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
Lunna [17]
3 years ago
11

Which of the following equations is an example of a quadratic equation?

Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0
Y=x^2-5 due to the fact that it has four parts even though it only looks as if it has three here. Just look for a square root and that is the one
You might be interested in
Evaluate -a -8b when a = 9 and b = -3<br> someone please help quick!!
ollegr [7]

Answer:

15

Step-by-step explanation:

-a -8b = -9 + 24 = 15

4 0
3 years ago
Read 2 more answers
Find the whole.<br> 30% of what number is 12?
Lena [83]
The answer is 40 your welcome
3 0
3 years ago
Felix earns $450 per week plus 3% of sales over $4800. Felix’s sales are $53000. How much does Felix earn?Felix earns $450 per w
kirill [66]

Answer:

<em>Felix earns total $594 per week.</em>

Step-by-step explanation:

Felix’s sales are $53000.

So, <u>the amount of sales over $4800 will be</u>:  \$53000-\$4800= \$48200

Felix earns $450 per week and additional 3% of sales over $4800.

So, his additional income = (\$4800\times 0.03)=\$144

Thus, Felix's total income will be:  (\$450+\$144)=\$594

3 0
3 years ago
Of those women who are diagnosed to have early-stage breast cancer, one-third eventually die of the disease. Suppose a screening
Finger [1]

Answer:

A) Alternative hypothesis; Ha: p_o > ⅔

B) Null hypothesis;

H0: p_o = ⅔

C) There is sufficient evidence to support the claim that the community screening programme was effective

D) p-value = 0

Its less than the significance value and so we will reject the null hypothesis and conclude that the community screening programme was effective

Step-by-step explanation:

A) We are told that ⅓ of those diagnosed eventually die of the disease. Thus, ⅔ is the fraction that will survive the disease.

Thus, the null hypothesis is;

H0: p_o = ⅔

We are told that a screening programme was started to increase the survival rate. Thus,the alternative hypothesis is;

Ha: p_o > ⅔

B) null hypothesis is;

H0: p_o = ⅔

C) 164 out of the 200 women selected survived the disease.

Thus sample proportion is;

p^ = 164/200

p^ = 0.82

For the z-score value, we will use the formula;

z = (p^ - p_o)/√((p_o(1 - p_o)/n)

Now, p_o = ⅔ = 0.67

Thus;

z = (0.82 - 0.67)/√((0.67(1 - 0.67)/200)

z = 4.51

From online p-value from z-score calculator, we have p-value ≈ 0

This is less than the significant level of 0.05 and therefore we will reject the null hypothesis and conclude that the community screening program was effective.

D) p-value ≈ 0

Reject the null hypothesis

4 0
2 years ago
Find the central angle of a sector of a circle if the area of the sector and the area of the remaining part of the circle are in
andre [41]

Answer:

288

Step-by-step explanation:

360/5 = 72

72x4 = 288

8 0
2 years ago
Other questions:
  • HELP PLZ!!!!!!!!!!!! 30POINTS!!!!!!!!
    15·1 answer
  • For the rule y= 4 - x2, calculate the y-values that complete the table below
    10·1 answer
  • What value of x makes the following equation true? (enter numbers only)<br> 2 (x – 4) + 2x = -6x – 2
    15·1 answer
  • If f(x) = 5x+4 and g(x) = x-4, find (f o g)(x) and (g o f)(x)
    6·1 answer
  • Which of the following statements is true?
    5·2 answers
  • Can someone please answer this im so tired man​
    14·1 answer
  • Suppose you are investigating which hamburger condiment is most popular in a school cafeteria which type of display would be mos
    13·1 answer
  • In 2016 the city of Rio de Janeiro had a population density of 5377 people/km²
    15·1 answer
  • Please solve<br> -5+(-8) step by step thank you!!
    11·2 answers
  • 4x7 = 2x + 15<br><br> Does the equation have one<br> none, or infinite solutions?<br> Explain why.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!