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
Leviafan [203]
3 years ago
12

Joe is solving a quadratic function by graphing. He gets -1, -2, and 2 as the solutions to the quadratic. What error did Joe mak

e and what is the correct answer to the quadratic?
Mathematics
1 answer:
svetlana [45]3 years ago
3 0

Answer:

There are only two roots of a quadratic.

Step-by-step explanation:

Not sure how Joe got three, but he did something incorrectly.

You might be interested in
Look at the attachment pls!!
Naddika [18.5K]

The terms -12x^2y and 4x^2y can be added to 3x^2y to result in a monomial.

Step-by-step explanation:

Given term is;

3x^2y

A monomial is an algebraic expression that consists of only one term.

So in the given expressions, we will add the terms which have same variables as given terms.

Given options are;

3xy\\-12x^2y\\2x^2y^2\\7xy^2\\-10x^2\\4x^2y\\3x^3

The terms -12x^2y and 4x^2y can be added to 3x^2y to result in a monomial.

4 0
3 years ago
Which of the following is the smallest element in the set of natural numbers?
fredd [130]

Answer:

your answer would be 0 mark as brainliest

4 0
2 years ago
Sami ordered 132 dresses for her store . What is 132 rounded to the nearest ten?
Yuki888 [10]
130 because 2 is less than 5
3 0
3 years ago
g A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam. We ar
BaLLatris [955]

Answer:

The test statistic is z = 1.25

Step-by-step explanation:

We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.

At the null hypothesis, we test if the proportion is 80%, that is:

H_0: p = 0.8

At the alternate hypothesis, we test if the proportion is more than 80%, that is:

H_a: p > 0.8

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

80% is tested at the null hypothesis:

This means that \mu = 0.8, \sigma = \sqrt{0.2*0.8} = 0.4

A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.

This means that n = 100, X = \frac{85}{100} = 0.85

The test statistic is

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.85 - 0.8}{\frac{0.4}{\sqrt{10}}}

z = 1.25

The test statistic is z = 1.25

4 0
3 years ago
The heights of the members of a high school class
sergey [27]

Answer:

the average height is between 65 and 72 inches

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • N two years, Linda will be half as old as her mother. Her mother is 38 years old now.
    7·1 answer
  • You don't have to explain please help!
    9·1 answer
  • 1. Clare has a piece of paper that is 8 inches by 10 inches. How many pieces of paper
    10·2 answers
  • 4. Simplify this expression: 19 - (-8) - (-14) = ?
    15·2 answers
  • A small plane and a large plane are 6.8km from each other, at the same altitude (height). From an observation tower, the two air
    13·1 answer
  • Esteban has a big jar of change in his room. He has 600 coins total, and 240 of them are pennies. What percentage of the coins a
    11·2 answers
  • Joshua babysits for his sister after school. He is paid
    12·2 answers
  • Convert 12 ounces to pounds use the conversion rate 16 ounces = 1 pound
    12·2 answers
  • The formula shows that c, the total cost of buying pizzas at Al's restaurant depends on p, the number of pizzas ordered.
    10·1 answer
  • 22. The area of a triangle can be represented by the expression 14x^5 + 63x^2. If the base is 7x^2, write
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!