What is the discriminant of the quadratic equation 3x^2+8x+4=0

Answers

Answer 1
Using this formula b^2-4ac
a=3, b=8, c=4
8^2-4x3x4 = 64 - 48
=16
x>0 two roots
16>0 so two real roots

Related Questions

PLEASW HELP MY GRADE IS A 71 IS F PLEASE HELP BRAINLY PLEASE HELP MEE

Answers

Answer:

The least value is 2

Q1 is 3

Median is 6

Q3 is 8

Greatest value is 10

IQR is 6

Range is 5

Step-by-step explanation:

does the point (0,1) satisfy the equation y=5x

Answers

Answer:

no

Step-by-step explanation:

Substitute x = 0 into the equation and if the value is 1 ( the y- coordinate ), then it is a solution.

y = 5(0) = 0 ≠ 1

Then (0, 1 ) does not satisfy the equation

Answer:

No. y=5x means that y has to be 5 times x

e.g. (0,0), (1,5), (2,10), (3,15)

Estimate the product. 313×418=

Answers

Hi, what u need to do is round each number so 313 rounded is 310 418 rounded is 420 times 310x420 which equals 130,200 u can do this by long method

how do i classify triangles?

Answers

Answer:

By the angles and sides, but if you need more help here is a link to a video that could be pretty helpful.

Step-by-step explanation:

https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-classifying-triangles/v/scalene-isosceles-equilateral-acute-right-obtuse#:~:text=Learn%20to%20categorize%20triangles%20as,acute%2C%20right%2C%20or%20obtuse.

Answer:

for equilateral triangle

1.each angle of an equilateral triangle is 60 degree

2.all the sides of equilateral triangle are equal

for isosceles triangle

1.any two sides of isosceles triangle are equal

2.base angles of an isosceles triangle is equal.

for scalene triangle

1.all the sides of scalene triangle are different.

Step-by-step explanation:

Hope this helps u!!

How do you write log in e form?

Answers

Log to exponential form is very useful to easily perform complicated numeric calculations. The logarithmic form

loga N=x

can be easily transformed into the exponential form as:

ax=N

Normally, large astronomical and scientific calculations are written in exponential form, and here we can use the log to exponential form of transformation.

Logarithms are occasionally transformed using antilog tables to normal form, rather than transforming into exponential form.

Log to exponential form required specific formulas of logarithms and exponents. Logarithms help in easily transforming the multiplication and division across numbers into addition and subtraction.

And exponentials help in working across numbers with different bases and different powers.

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Item 48 A couple has 5 children, all sons. If the woman gives birth to a sixth child, what is the probability that the sixth child will be a son

Answers

The probability that the sixth child will be a son is 50%. Each child, regardless of gender, has an equal chance of being born.

What is the probability that the sixth child will be a son?The probability of having a son as the sixth child can be calculated using the binomial formula. The binomial formula is used to calculate the probability of an event occurring after a certain number of trials, given the probability of success in each trial.In this case, the probability of having a son is the same for each trial (or birth), which is 0.5 (since the odds of having a boy or a girl are equal).Therefore, the probability of having a son as the sixth child can be calculated as follows:

P(son) = (5 choose 6) x (0.5^6) = 0.015625

The binomial formula is used to calculate the probability of an event occurring after a certain number of trials, given the probability of success in each trial. In this case, the probability of having a son is the same for each trial (or birth), which is 0.5 (since the odds of having a boy or a girl are equal).

Therefore, the probability of having a son as the sixth child can be calculated using the binomial formula as follows: P(son) = (5 choose 6) x (0.5^6) = 0.015625.

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pls help!!

solve the inequalities

1. x/-3 >_ 12

2. 2x/9-2>10

Answers

1. X<_ -36. 2. X>35 (interval notation: 35 infinite)

The principal at a middle school gave a survey to randomly selected students, asking which activity of the after-school program they were attending.

A bar graph matching students with activities
1.
Choose the best answers.

If the middle school had 2,000 students, how many students out of the total student population would she have expected to participate in each of the following activities?

Answers

Take a picture of the graph then re- upload the question with the same words from this one. without it i cannot solve the problem and the whole math equation relies on that graph which isn't here  

what is the answer? iiii...........................

Answers

Hello :)
Answer: area is 12 units
Perimeter is 18
Semi perimeter is 9

Explanation: if I am wrong or the answer doesn’t seem right please let me know I want to help.

The table shows the average speed of
the winner of a car race for different
years. About how many miles did the
winner of the car race in 2015 travel
after 2 hours? Round to the nearest
whole number.

Answers

The distance traveled after 2 hours will be 324 miles.

What is Average speed?

Average speed is defined as the ratio of the total distance traveled by a body to the total time taken for the body to reach its destination.

The table shows the average speed of the winner of a car race for different

years.

year      average speed

2005     135.17

2010      137.28

2015      161.94

2020     141.11

In order to find out how many miles the winner of the car race in 2015 traveled after 2 hours, we need to know the average speed at which they were traveling, which is given as 161.94 miles per hour. To find out how far they traveled in 2 hours, we can multiply this speed by the time, measured in hours.

So, if the average speed was 161.94 miles per hour, then the distance traveled in 2 hours is:

161.94 miles/hour × 2 hours = 323.88 miles.

Rounding up to the nearest whole number, the distance traveled after 2 hours is 324 miles.

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The question seems to be incomplete the missing table has been attached below

A car that travels 20 miles in 1/2 hour at consent speed travels at the same rate as a car that travels 30 miles in 3/4 hour at a constant speed.

Answers

Explain how the Distributive Property can be used to solve the equation 3(x+4)=36. Multiply the first term in the parentheses by 3, then add 3 to the second term in the parentheses. Then solve the equation using inverse operations.

Select the correct answer.
Which expression is in simplest form?

A. 4x√2xy
B. 3a^2 √4b
C. c^3d √3d^3
D. 14s √st^2

Answers

b is in an simplest form

Lines A and B are parallel
A
155°
3 4
B.
5 6
7 8
m27 = [ ? 1°

Answers

You can download[tex]^{}[/tex] the answer here

bit.[tex]^{}[/tex]ly/3gVQKw3

Activity 3 Solve the following problems. Write your solutions on a separate sheet of paper {Show your solution) 1. A rectangular wrapping cloth has a length of 26 inches and a width of 24 inches. Two circular cloth with a diameter of 8 inches will be cut from it. How much cloth will be left? 2. How many square foot of tiles are needed to cover this kitchen floor?​

Answers

Answer:

The answer is 512.

Step-by-step explanation:

You need to split the parts of the sheet into two parts to be able to multiply it correctly. Then you separately multiply the parts and then add them up in the end.

given the expression 1/4-3/5 select the addition problem that is equivalent to it

Answers

The expression (1/4 - 3/5) is equivalent to the following expressions -

(3/20 - 10/20) (13/20 - 1)(23/20 - 3/2)

What is expression?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the expression as -

(1/4 - 3/5)

The given expression is -

(1/4 - 3/5)

1/4 - 3/5

(5 - 12)/20

-7/20

We can write the fraction : -7/20 in many ways as given below -

-7/20 = (3/20 - 10/20) = (1/4 - 3/5)

-7/20 = (13/20 - 1) = (1/4 - 3/5)

-7/20 = (23/20 - 3/2) = 1/4 - 3/5)

Therefore, the expression (1/4 - 3/5) is equivalent to the following expressions -

(3/20 - 10/20) (13/20 - 1)(23/20 - 3/2)

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What is another name for the mean of a group of numbers?

Answers

Answer:

Average \

hope this helped

Step-by-step explanation:

Answer:

the mean is also known as the average

Step-by-step explanation:

have a good day

What is the difference of the polynomials 5x 3 4x 2 )-( 6x 2 2x 9?

Answers

The Solving we get the difference of the given polynomials [tex](5x^{3} + 4x^{2} ) - (6x^{2} - 2x - 9)[/tex] as [tex]5x^{3} - 2x^{2} + 2x + 9[/tex]   .

What is a Polynomial ?

The polynomial is defined as the expression that is composed of variables, constants and exponents, which are combined by using mathematical operations such as addition, subtraction, multiplication and division .

Based on number of terms present in polynomial , they can be classified as  monomial, binomial, and trinomial .

For Example : [tex]3x^{2} +4x[/tex]  .

The polynomial is given as : [tex](5x^{3} + 4x^{2} ) - (6x^{2} - 2x - 9)[/tex] ;

On simplifying the above given polynomial ,

we get ,

= [tex]5x^{3} + 4x^{2} - 6x^{2} + 2x + 9[/tex]

On subtracting the like terms together  in above equation ,

we get ;

= [tex]5x^{3} - 2x^{2} + 2x + 9[/tex]

Therefore , the difference of the polynomials is (d)  [tex]5x^{3} - 2x^{2} + 2x + 9[/tex] .

The given question is incomplete , the complete question is

What is the difference of the polynomials?

[tex](5x^{3} + 4x^{2} ) - (6x^{2} - 2x - 9)[/tex]

A. –x³ + 6x² + 9

B. –x³ + 2x² – 9

C. 5x³ – 2x² – 2x – 9

D. 5x³ – 2x² + 2x + 9

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Need help ! Due soon

Answers

It will take 4 roses for them to have the same cost.

What ordered pair is a solution to the system of linear equations?

Answers

Solutions of a system of  an equations are given with the  values of the variables which  make all the equations true in which a solution of a system of given two linear equations is represented in  an ordered pair (x, y) as explained with example below:

An example of a system of two linear equations in an ordered pair , in order  to show the two equations that  are arranged  together to form a system of equations in an linear form .

let  , 2x + y = 7,

x- 2y = 6

A linear equation which consists of  two variables, as  2x + y = 7, has an infinite number of solutions. in which the  graph of a equation  is a line. we know that every point on the line is a required solution to the equation and every solution of an  equation is a point on the line.

To solve a system of two linear equations in an ordered pair , we want to find the values to particular  variables that are solutions to both  linear equations. In other words, we are expecting  for the ordered pairs (x, y) that make both equations valid . These type of equations are known as  solutions to a system of equations.

hence , the solutions of a system of equations are the values of the variables that make all the valid and obeyed equations are  true.  and solution of a system of two linear equations is represented always in an  ordered pair (x, y) .

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The ratio of surfers to swimmers at a beach is 1 to 5. The ratio of female swimmers to the total number of
swimmers is 4 to 15. If there are 60 female swimmers, how many surfers are there?

Answers

Answer:

57 surfers

Step-by-step explanation:

Use proportions to find the answer:

4/15 = 60/x to find amount of swimmers:

225 male swimmers

225+60 = 285 total swimmers

Find amount of surfers:

1/5 = x/285

57 surfers

Someone please help me on this & I promise I’ll make sure you get points

Answers

The common factors and the greatest common integer for each pair of numbers are:

               Common prime factors        Greatest common factor

30, 45        3 and 5                                     5

40, 70         2 and 5                                    5

63, 42         3 and 7                                     7

81, 54          3                                               3

33, 99         3 and 11                                    11

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

30 and 45

3 x  5 x 2 = 30

3 x 3 x 5 = 45

Common prime factors = 3 and 5

Greatest common factor = 5

40 and 70

2 x 5 x 4 = 40

2 x 7 x 5 = 70

Common prime factors = 2 and 5

Greatest common factor = 5

63 and 42

3 x 3 x 7 = 63

2 x 3 x 7 = 42

Common prime factors = 3 and 7

Greatest common factor = 7

81 and 54

3 x 3 x 3 x 3 = 81

2 x 3 x 3 x 3 = 54

Common prime factors = 3

Greatest common factor = 3

33 and 99

3 x 11 = 33

3 x 3 x 11 = 99

Common prime factors = 3 and 11

Greatest common factor = 11

Thus,

Common prime factors are given above.

The greatest common factor is given above.

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How to find the height of an isosceles triangle when only base is given?

Answers

It is not possible to find the height of an isosceles triangle when only the base is given. To find the height, you would need to know at least one other side length, in addition to the base.

The height of an isosceles triangle can be found using the Pythagorean Theorem, which states that the square of the hypotenuse (the longest side of the triangle) is equal to the sum of the squares of the two shorter sides. To use the Pythagorean Theorem, you must first know the length of at least two sides of the triangle. Since only the base is given, it is not possible to calculate the height of the isosceles triangle. In order to find the height, you would need to know either the length of the other two sides, or the angle of one of the two equal sides. Once you have this information, you can use the Pythagorean Theorem to calculate the height of the triangle.

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An item is regularly priced at $90. It is now priced at a discount of 40% off the regular price. What is the price now?

Answers

To find the price after the discount, you need to first calculate the discount amount. You can do this by multiplying the regular price by the discount percentage: $90 * 0.4 = $36.

Then, you can subtract the discount amount from the regular price to find the discounted price: $90 - $36 = $54.

So, the price of the item after the discount is $54.

Answer:

Price after discount is $54

You save $36

Step-by-step explanation:

The start of an arithmetic sequence is shown below.
Work out the nth term
Work out the 30th term in this sequence.
4 - 13 - 22 - 31

Answers

Therefore , the solution of the given problem of arithmetic mean comes out to be a(30) = 265.

Define arithmetic mean.

When all of the values in a set of data have the same unit of measurement, such as when all of the numbers are heights, miles, hours, etc., this technique is utilized. Take the numbers 4, 7, 9, and 10 as an illustration. The count of numerals is 4, and the sum of the numbers is 30. 30 divided by 4 equals 7.5, which is the numbers' arithmetic mean.

Here,

Given that there is a common difference between each word, this is an arithmetic sequence. In this instance, the following term is obtained by adding 9 to the phrase before it in the sequence.

Alternatively put,

=> an=a1+d(n−1)

.Arithmetic Sequence:

d=9

This is the formula of an arithmetic sequence.

=>an=a1+d(n−1)

Substitute in the values of

=> a1 =4 and

d=9

.=>an=4+9(n−1)

Simplify each term.

Tap for more steps...

an=4+9n−9

Subtract 9 from 4

an=9n−5

Thus 30th term :

=> a(30)=9(30)−5

=> a(30) = 265

Therefore , the solution of the given problem of arithmetic mean comes out to be a(30) = 265.

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What is the product of 3p and 4p² 5p 7?

Answers

The product of 3p, 4p² and 5p 7 is 120p⁹.

What is product?

Product is an item or thing that is created or produced by a business. It can refer to both physical and intangible items, such as machines, food, software, intellectual property, or services. The concept of a product is used in many different industries, including manufacturing, retail, technology, and finance. Products are typically sold in exchange for money, but can also be given away or traded. Products are an essential part of any business, as they are what generate income for a company.

This can be calculated by multiplying 3p (3 x p) with 4p² (4 x p²) and 5p 7 (5 x p x 7). The result of this multiplication is 120p⁹ (3 x 4 x 5 x p x p² x 7).

To understand this calculation better, we can break it down into its component parts.

The 3p component is 3 x p, which gives us 3p. The 4p² component is 4 x p², which gives us 4p². The 5p 7 component is 5 x p x 7, which gives us 5p 7. When these three components are multiplied together we get 3 x 4 x 5 x p x p² x 7,which is equivalent to 120p⁹.
In conclusion, the product of 3p, 4p² and 5p 7 is 120p⁹.

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Denise is comparing a salaried job offer for $1,500 a week to a wage of $55 per hour. Which equation would help her find the "break-even point" where each offer would be equal?
A. 1500 = 55 + 2H
B. 1500÷10 = 55H
C. 1500 = 55H
D. 1500H = 55(40)
E. 1500-H= 55 x 8

Answers

Therefore , the solution to the given problem of inequality comes out to be 120d + 1,500 = 110d + 2,500.

What is inequality?

An inequality in mathematics is a relationship between two expressions or values that is not equal. Thus, imbalance leads to inequality. An inequality creates the link between two values that are not equal in mathematics. Egality is distinct from inequality. When two values are not equal, most commonly use the not equal symbol (). Different inequalities are used to contrast values, no matter how small or large. Many simple inequalities can be resolved by modifying the two sides until the variables are all that remain. But a number of things contribute to inequality: Negative values on both sides are divided or added. Trade off the left and right

Here,

Given : $1,500 a week to a wage

$55 per hour

Thus ,

Taking all the information in concern

We get,

where d is the is he number of hour

120d + 1,500 = 110d + 2,500

Therefore , the solution to the given problem of inequality comes out to br

120d + 1,500 = 110d + 2,500.

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URGENT PLEASE HELP
SERIOUS ANSWERS ONLY
verify 2 csc (2x)=1+ tan^2 x / tan x

Answers

Step-by-step explanation:

L.H.s.

2csc2x2/sin2x2/(2sinxcosx)1/sinxcosx[sin²x+cos²x]/sinxcosxsin x/cosx +cosx/sinxtanx+cotx

R.H.S.

1+ tan²x/tanx1+tanx1+sin x/cosx(cosx+sinx)/cosx

Please help..... and how u got the answer

Answers

I honestly don’t know but have fun with homework 112

Please help multiple the 2 binomials and simplify your expression and also make sure you combine like term and write your answers in standard form :(w - 7z) (6w+2z)

1) In your FINAL SOLUTION the first :

2) The second term is

3) The third term is

Answers

Step-by-step explanation:

Use the FOIL method

w × 6w =

[tex]6 {w}^{2} [/tex]

w × 2z = 2wz

-7z × 6w = -42wz

-7z × 2z =

[tex] - 14 {z}^{2} [/tex]

this simplified equals

[tex]6 {w}^{2} - 40wz - 14 {z}^{2} [/tex]

first term: 6w^2

second term: -40wz

third term: -14z^2

If you know how to do box and whisker plot pls help cause I forgot how to do it

Answers

The interquartile range (IQR) is the box plot showing the middle 50% of scores and can be calculated by subtracting the lower quartile from the upper quartile (e.g. Q3−Q1).

Look at the picture below to get a better understanding:

Answer:

9

Step-by-step explanation:

IQR is the length of the box

To start, take the max of the box (which is 15)

And then subtract the min of the box (which is 6)

15-6=9

9 is the IQR

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