if the discriminant of an equation is positive, which of the following is true of the equation?
A. it has one complex solution
B. it has two real solutions
C. it has one real solution
D. it has two complex solutions

Answers

Answer 1
D>0 that means it has two real solutions (unequal). 
It can have one solution only if D=0 and complex solutions only if D<0. 

D means discriminant

Answer: B it has two real solutions

hope this helps :)

Related Questions

What additional information could you use to show that ΔSTU ≅ ΔVTU using SAS? Check all that apply.
UV = 14 ft and m∠TUV = 45°
TU = 26 ft
m∠STU = 37° and m∠VTU = 37°
ST = 20 ft, UV = 14 ft, and m∠UST = 98°
m∠UST = 98° and m ∠TUV = 45°

Answers

I believe the correct answers are:

UV = 14 ft and m∠TUV = 45°
ST = 20 ft, UV = 14 ft, and m∠UST = 98°

Or, in other words, Options A and D.

Mr. Malone used 40 pounds of insecticide to cover 1,760 square feet of lawn and 60 pounds to cover an additional 2,640 square feet. how many pounds of insecticide would Mr. Malone need to cover his whole lawn of 4,480 square feet?

Answers

Using the given information, we are able to setup proportion:

[tex]\frac{100}{4400}=\frac{x}{4480} \\4400x=100\cdot4480 \\x=\frac{100\cdot4480}{4400}=\frac{1120}{11}=101.\overline{81}\approx102lb[/tex]

Answer:

101.8182 pounds.

Step-by-step explanation:

He used 40 pounds of insecticide to cover 1760 square feet of lawn and 60 pounds to cover an additional 2640 square feet. So,

1760 + 2640 = 4400 square feet of lawn with 40+60 = 100 pounds of insecticide. Then, his whole lawn is 4480 square feet andn he already covered 4400, so he need to cover 4480 - 4400 = 80 square feet more.

Now, one of the data given we can do a proportion:

40 pounds to 1760 square feet = [tex]\frac{40pounds}{1760ft^2}[/tex]

x pounds to 80 square feet = [tex]\frac{xpounds}{80ft^2}[/tex]

[tex]\frac{40pounds}{1760ft^2}=\frac{xpounds}{80ft^2}[/tex]

[tex]xpounds*1760ft^2 = 80ft^2*40pounds[/tex]

[tex]xpounds = \frac{80ft^2*40pounds}{1760ft^2}[/tex]

[tex]xpounds = \frac{3200pounds}{1760}[/tex]

[tex]x = 1.8182 pounds.[/tex]

Then, to cover his whole lawn of 4480 square feet he needs 100+1.8182 = 101.8182 pounds of insecticide.

The line parallel to y=9x+4 that passes through (2,7)

Answers

y = 9x + 4....the slope here is 9. A parallel line will have the same slope

y = mx + b
slope(m) = 9
(2,7)...x = 2 and y = 7
now we sub into the formula and find b, the y int
7 = 9(2) + b
7 = 18 + b
7 - 18 = b
-11 = b

so ur parallel equation is : y = 9x - 11 <==

The equation of the  line parallel to y=9x+4 that passes through (2,7) is y = 9x - 11

The equation of a line in point-slope form is expressed as:

y - y0 = m(x-x0)

m is the slope of the line

(x0, y0) is any point on the line

Given the equation y = 9x + 4, the slope of the line is expressed as:

mx = 9x

m = 9

We will use the same slope since the lines are parallel

Substitute the slope and the given point into the formula;

y - 7 = 9 (x -2)

y - 7 = 9x - 18

y = 9x -18 +7

y = 9x - 11

Hence the equation of the  line parallel to y=9x+4 that passes through (2,7) is y = 9x - 11

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Evaluate 1/4c + 3d when c = 6 and d = 7

Answers

Replace the C and D with 6 and 7.

1/4 (6) + 3 (7)

6/4 + 21 

6/4 + 84/4 = 90/4

90/4 = 22.5

Hope this helps!
1/4(6) + 3(7)
= 1/4 x 6 + 3 x 7
1/4 x 6= 3/2
3 x 7= 21
= 3/2 +21
= 21/1 + 3/2
= 21 x 2/2 + 3/2
=2 x 21 + 3/2
= 45/2

Plz help! :p

The tables below show the values of y corresponding to different values of x:


Table A
x 3 3 2
y 1 0 0
Table B
x 3 5 5
y −2 2 −2


Which statement is true for the tables?
Both Table A and Table B represent functions.
Both Table A and Table B do not represent functions.
Table A does not represent a function, but Table B represents a function.
Table A represents a function, but Table B does not represent a function.

Answers

Table A represent a function, and Table B does not.
Why?
Table to be a function, need to satisfy following conditions (look at the .jpeg image attached with this answer):
1. condition: In first circle, EVERY element has to be connected with SOME of the elements in second circle
2. condition: In first circle, there MUSTN'T be an element that has MORE THAN ONE connection with elements in second circle
-----------------------------------------------------------------------------
Table A satisfies BOTH of these conditions; that is why table A is indeed a function.
Table B satisfies FIRST condition but it does not satisfy the SECOND condition, that is why it is NOT a function.

Answer:

Table A represents a function but Table B does not represent a function.

Step-by-step explanation:

Suppose that you are headed toward a plateau 19.3 meters high. if the angle of elevation to the top of the plateau is 29.5 degrees​, how far are you from the base of the​ plateau?

Answers

I attached a picture better explaining this.

What is the area of a parallelogram whose vertices are A(−12, 2) , B(6, 2) , C(−2, −3) , and D(−20, −3) ?



Enter your answer in the box.

Answers

To solve this, we simply have to get the length and the width. Based from the graph, we can see that the length is connected by 2 points (-12, 2) and (6, 2) or (-20, -3) and (-2, -3). The height between the two lengths is 5 which can be counted manually.

We use the distance formula to calculate the length from either pair of points.

 

length^2 = [(-12 – 6)^2 + (2 – 2)^2]

length = 18

 

Therefore the area is:

Area = length * height

Area = 18 * 5

Area = 90

Which of the following equations represents a line that is perpendicular to the line that passes through the points below?

(-8, -10) (-6, -2)

Thank you!

Answers

Final answer:

By calculating the slope of the line passing through the given points to be 4, the slope of any line perpendicular to this would have the opposite reciprocal, -1/4. Without a specified point for the line to pass through, (0,0) is used and the equation of the perpendicular line is y = -1/4x.

Explanation:

The first step to finding a line perpendicular to another is understanding the concept behind the slope of a line. The slope of a line is determined by comparing the vertical change (rise) to the horizontal change (run) between two points on a line.

For the points (-8, -10) and (-6, -2), the slope would be calculated as follows: (change in y)/(change in x), which in this case would be (-2 - (-10))/(-6 - (-8)). Simplifying that expression gives us a slope of 4.

The opposite reciprocal of 4 is -1/4 (we flipped the fraction and changed the sign). This is the slope of all lines perpendicular to the original line.

Lastly, for the equation of a line, we need a point for the line to pass through, since the question didn't specify a point, we can use (0,0), so the equation of our perpendicular line is y = -1/4x.

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If h(x) = 3x −7, find h(4). Show all work for credit!

Answers

h(4) means that x = 4.

Replace x with 4.

h(4) = 3(4) - 7

h(4) = 12 - 7

h(4) = 5

Hope this helps!
h(4) = (3x4) - 7
h(4) = 12 - 7
H(4) = 5

just replace the x value with the 4 

Which equation in point-slope form contains the points (8, 10) and (–4, 2)?

Answers

Final answer:

The equation in point-slope form containing the points (8, 10) and (-4, 2) is y - 10 = (2/3)(x - 8).

Explanation:

The point-slope form of a linear equation is given by  where (x1, y1) represents the given point and m represents the slope. To find the equation in point-slope form containing the points (8, 10) and (-4, 2), we need to calculate the slope first. The slope m can be calculated using the formula m = (y2 - y1) / (x2 - x1).

Using the given points (8, 10) and (-4, 2), we can substitute the values into the formula to find the slope:

Now that we have the slope, we can use one of the given points to write the equation in point-slope form. Let's use the point (8, 10):

What is 1 / (0! - 1!)

Answers

The answer would be undefined since 0! is equal to 1 and 1! is also 1. When you subtract 1 and 1, you get 0 on the denominator, and 1/0 is undefined.
0! = 1  and 1! = 1  so the denominator = 0 

So the answer is 1 / (0! - 1! ) is indeterminate

How many complex roots does the polynomial equation have? 3x^5−2x+1=0

Answers

discriminant = b^2 - 4ac
= (-2)^2 - 4(3)(1)
= 4 - 12
= - 8

the square root of a negative will give two complex roots.

Answer:

The polynomial equation has 5 complex roots.

Step-by-step explanation:

To the nearest square unit what is the area of the regular octagon shown below

Answers

Answer: c

Step-by-step explanation: a p e x

The area of the given Octagon is 1,086 units²

What is an Octagon?

A polygon of eight angles and eight sides is called an Octagon.

Given is a figure of an Octagon, having radius = 18.1 units and side length = 15 units.

The regular octagon is divided into 8 triangles

Therefore, the area of a regular octagon = the sum of the area of 8 triangles

The area of a triangle = 1/2(base)(height)

Here, base = 15 units and length = 18.1 units

Therefore, the area of a regular octagon = 1/2×15×18.1×8 = 1,086

Hence, The area of the given Octagon is 1,086 units²

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Zeke ran 4 miles in 45 minutes. if he keeps up the same pace, how long will it take him to run 10 miles?

Answers

Final answer:

Zeke's pace is approximately 5.33 miles per hour. To run 10 miles at this pace, it will take him about 113 minutes.

Explanation:

To solve how long it will take Zeke to run 10 miles at the same pace, we need to establish his running speed. We know that Zeke ran 4 miles in 45 minutes, which we can convert to hours for simplicity. Since there are 60 minutes in an hour, this is ⅔ of an hour. So, Zeke's pace is 4 miles per ⅔ hour, or 4 miles per 0.75 hours, which is ≈ 5.33 miles per hour.

Now, we use this pace to determine how long it will take him to run 10 miles. If Zeke runs at a pace of 5.33 miles per hour, then we can calculate the time for 10 miles by dividing the distance by the speed:

Time = Distance ÷ Speed

Time = 10 miles ÷ 5.33 miles/hour

Time ≈ 1.88 hours

Since we want the time in minutes, we multiply by 60 minutes per hour:

1.88 hours × 60 minutes/hour ≈ 112.8 minutes

So, it would take Zeke approximately 113 minutes to run 10 miles at the same pace.

When you calculate the sample mean, you divide the sum of the values in the sample by..?

Answers

You divide the sum by the amount of values in the sample. For example, of the values 1, 2, 2 , 3, you'd divide 8/4.
Final answer:

The sample mean is calculated by adding up all the values in a sample and then dividing this total by the number of values in the sample.

Explanation:

When you calculate the sample mean, you divide the sum of the values in the sample by the number of values in that sample. For instance, if your sample contains the values 2, 4, and 6, you would add all these values together to get 12. Then, you would divide this total by 3, because there are three values in your sample. This would give you a sample mean of 4.

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Evaluate the function rule for the given value.

y= 4 X 2^x for x = –6

A: 1/16

B: -48

C: 1/8

D: 1/32

Answers

i=<4 over theproduct 1/8 so thats your answer bye digger

what number is 8.2% of 50

Answers

your answer would be 4.1
So you set up your equation, which is this, [tex] \frac{8.2}{100} [/tex]·[tex] \frac{x}{52} [/tex]. Then you cross multiply it and get 100x=410. Divide both sides by 100, and get x=4.1. 4.1 is 8.2% of 50.
Hope this helps

kelly subscribes to a service called mysongs for downloading music she pays a $7 fee each month to download an unlimited numbers of songs at $0.20 each last month kelly's bill was $23.80

Answers

subtract the fee from the total to get the amount actually spent on songs

23.80-7 = 16.80

 divide that amount by price per song to get number of songs downloaded

16.80 /0.20 = 84 songs

A car Travel 476 miles on 14 gallons of gas. Write an eqation relating the distance d to the nuber of gallons
g. How mmany travel 578 miles

Answers

476miles per 14gallons of gas

is the same as 476 / 14 = 34

so 34miles / 1gallon of gas.

34x =578 where x is the number of gallons

578 / 34 = 17gallons

Ms. Wilson works at a music store. On Black Friday she sold 6 more than 3 times the number of CDs she sold on Cyber Monday. Ms. Wilson sold a total of 110 CDs on Black Friday and Cyber Monday. How many CDs did she sell on each day?

Answers

Plz send a picture for me to help you on this thank u

show the picture

please

In your top dresser drawer are 6 blue socks and 10 grey socks, unpaired and mixed up. one dark morning you pull two socks from the drawer (without replacement, of course!). what is the probability that the two socks match?

Answers

We'll use the formula for the classical probability as follows.

P(A) = Number of outcomes favorable for A / Total number of possible outcomes

In this case, two socks are randomly drawn from a set of 6+10 = 16 socks. So the total number of possible outcomes = 16C2 = 120.

The two stocks match each other if they are both blue or grey. So the number of favorable outcomes is 6C2 + 10C2 = 15 + 45 = 60.

Hence the probability that the two stocks match is [tex] \frac{60}{120}=0.5 [/tex].

An investment of $7,650 earns interest at the rate of 5% and is compounded quarterly. What is the accumulated value of the investment at the end of 9 years?
a.
$11,964.17
b.
$11,867.66
c.
$9,338.56
d.
$8,554.94

Answers

The needed formula is

A = p(1 + r/n)^(nt)

We are looking for A.

Let r = 0.05

Let n = 4

Let p = 7650

Let t = 9

A = 7650(1 + 0.05/4)^(4•9)

You can now finish. So, solve for A.

In other words, simplify the right side of the equation to find your answer.

Answer:

$11,964.17

Step-by-step explanation:


The space between the text and the top, bottom, left and right edges of the paper are called?

Answers

Corners are what they are called.
Final answer:

The space between text and the edges of the paper is known as margins. These are essential for creating visually pleasing documents and providing space for binding or notation. They are adjustable in text-editing software.

Explanation:

The space between the text and the top, bottom, left, and right edges of the paper is known as margins. They are essential in creating a visually pleasing document while offering a significant area for binders or for allowing readers to make notes. For example, in Microsoft Word or other text-editing software, you can adjust the size of the margins under the 'Page Setup' option.

As an additional point, 'the distance between the plates', 'the area', 'the length of a side', and both 'the area and the length of a side' are related to the geometry and physics field. These phrases are typically used when discussing measurements in these subjects, but they don't directly relate to this specific question about margins.

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2(2t+4)=34(24−8t). My math teacher is on crack

Answers

2(2t+4) = 34(24-8t)

4t + 8 = 816 - 272t   (Because of distributive property)

276t + 8 = 816   (Because I added the negative 192 to the other side, due to combine like terms)

276t = 808 (Subtracted 8 from 816)

t = 202/69  (After dividing 808 and 276, the answer is remained in fraction form!)
2(2t+4)= 34(24-8t)

First, distribute into parentheses

4t+8= 816-272t

Now, subtract 4t from both sides

8= 816-276t

Subtract 816 from both sides

-808= -276t

Divide both sides by -276

2.927= t

Calculate dy/dx if y = Ln (2x3 + 3x).

Answers

Differentiate using the chain rule:

d/du [ln(u)] d/dx[2x^3+3x]

derivative of ln(u) = 1/u

1/u d/dx[2x^3+3x]

1/2x^3+3x d/dx[2x^3+3x]

Differentiate

(6x^2+3) 1/2x^3+3x

Simplify

Dy/dx = 3(2x^2+1) / x(2x^2 +3)


Answer:

[tex]\frac{(6x^2+3)}{(2x^3+3x)}[/tex]

Step-by-step explanation:

[tex]\frac{dy}{dx}[/tex] [tex]ln(x)=[/tex] [tex]\frac{1}{x}[/tex] .

Therefore:

[tex]\frac{dy}{dx}[/tex] [tex]ln(2x^{3}+3x) = \frac{1}{2x^{3}+3x} *6x^2+3[/tex]

[tex]6x^2+3[/tex] is multiplied because of the chain rule.

Which of the following number lines represents the solution set of 11 + x ≥ 14?

Answers

Second one because:
1) 11+x >= 14
2)x<=14-11
4)x<=3

Answer:

The line that represents the solution set of [tex]11+x\geq 14[/tex] is the second one.

Step-by-step explanation:

If we want to find the line, we need to solve the inequality.

The inequality is [tex]11+x\geq 14[/tex]

If we solve it in terms of x :

[tex]11+x\geq 14[/tex]

[tex]x\geq 14-11[/tex]

[tex]x\geq 3[/tex]

This means that the solution of the inequality [tex]11+x\geq 14[/tex] are all real numbers greater or equal to 3.

The line that represents [tex]x\geq 3[/tex] is the blue line in the second number line.

It is important to notice that [tex]x>3\neq x\geq 3[/tex] because in the second expression the number 3 is included.

In the second line the number ''3'' is included because there is a blue point in the number 3 instead of the first number line where in the number ''3'' the blue point is empty.

Factor? for 6xy−3x−8y+4

Answers

6xy -3x -8y +4 
3x (2y - 1 ) - 4 (2y -1) 
(2y-1) (3x-4)

A number or algebraic expression that divides another number or expression evenly is factor. (2y-1) and (3x-4) are factors for 6xy−3x−8y+4.

What are factors?

a number or algebraic expression that divides another number or expression evenly is called factor.

We need to find factors for 6xy−3x−8y+4.

The given expression is

6xy -3x -8y +4

Take common terms

3x (2y - 1 ) - 4 (2y -1)

(2y-1) (3x-4)

Therefore the factors are (2y-1) (3x-4) for 6xy−3x−8y+4.

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A bowl holds 3/10 cup of oil when it is 2/5 full. Which statement best describes the quotient of 3/10 divided by 2/5?

The maximum amount of oil the bowl can hold is Fraction 3 over 4 cup.

The maximum amount of oil the bowl can hold is Fraction 4 over 3 cups.

The amount of oil that can be still poured in the bowl is Fraction 3 over 4 cup.

The amount of oil that can be still poured in the bowl is Fraction 4 over 3 cups.

Answers

If 3/10 cup is 2/5 full, then the bowl holds:

(3/10) / (2/5)

(3/10)/(2/5) = 3/10 * 5/2 = 15/20 = 3/4

The bowl holds 3/4 of a cup

Answer:

3/4 cups

Step-by-step explanation:

How do you solve for percent increase and percent decrease?

Answers

for increase:

Increase = New Number - Original Number

Then divide the increase by the original number and multiply the answer by 100

For decrease:

Decrease = Original Number - New Number

Then divide the decrease by the original number and multiply the answer by 100




Julia did a survey in four butterfly parks and wrote the following observations:

Butterfly Park Survey

Park Number of Blue Butterflies Total Number of Butterflies
P 21 82
Q 40 86
R 11 63
S 38 58


Based on the survey, which park had the greatest percentage of blue butterflies?

Park P
Park Q
Park R
Park S

Answers

park s because it 65.5% blue

Answer with Step-by-step explanation:

Percentage of blue butterflies in any park

=[tex]\dfrac{number\ of\ blue\ butterflies\ in\ that\ park}{total\ butterflies\ in\ that\ park}\times 100[/tex]

Percentage of blue butterflies in  park P

=[tex]\dfrac{21}{82}\times 100[/tex]

=25.61 %

Percentage of blue butterflies in  park Q

=[tex]\dfrac{40}{86}\times 100[/tex]

=46.51%

Percentage of blue butterflies in  park R

=[tex]\dfrac{11}{63}\times 100[/tex]

=17.46%

Percentage of blue butterflies in  park S

=[tex]\dfrac{38}{58}\times 100[/tex]

=65.52%

Hence, park which had the greatest percentage of blue butterflies is:

Park S

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