4. 2x2 + 4x + 10 = 0

Answers

Answer 1

Answer:

Step-by-step explanation:

This doesn't factor. Not only that, but it does not give real results. The discriminate is negative.

a = 2

b = 4

c = 10

You could divide this equation by 2

a = 1

b = 2

c = 5  

These three are smaller and easier to calculate. The answer will be the same.

x = (- b +/- sqrt(b^2 - 4*a*c ) / (2 a)

x = (-2 +/- sqrt(^2 - 4(1)*(5) ) / 2*1

x = (-2 +/- sqrt(4 - 20) ) / 2

X = (-2 +/- sqrt(-16) ) /2

x = (-2 +/- 4i ) / 2

x = ( - 1) +/- 2i


Related Questions

4 tran ra To make cherry trail mix, Sebastián needs 4 oz of nuts for every 3 oz of dried cherries. To make sunflower trail mix, he needs 5 oz of nuts for every 2 oz of sunflower seeds. Can Sebastián make more cherry trail mix or sunflower trail m with 20 oz of nuts? Show your work. OLUTION metale to make bronz bronz​

Answers

For starters I am not 100% sure of if this is correct I may not understand the quest so bare with me

Answer:

Cherry Trail Mix

Step-by-step explanation:

4 oz of nuts for every 3 oz of dried cherries

5 oz of nuts for every 2 oz of sunflower seeds

- Multpy the amount of nuts in each bag to 20 - Cherry Trail Mix: 4*5=20

Sunflower Trail Mix: 5*4=20

- Now multiply the amount of dried cherries and sunflower seeds by the number used to get to 20

Cherry Trail Mix: 3*5= 15 Sunflower Trail Mix: 2*4=8

- Now add up the amount of oz in each

Cherry: 20+15=35

Sunflower: 20+8=28

35oz > 28oz

Find the sine of angle R.

Answers

Answer:

Your answer would be C

Step-by-step explanation:

5/12 = 0.41 which is the angle

also follow the sequence of events in the order of p, q, r. Which will explain why I got 5/12

You owe $1456.32 on a credit card with a limit of $3500 what is your debt ratio?
A. 40%
B. 43.4%
C. 35%
D. 41.6%

Answers

A because 40% of 3500 is 40%

What is the measure of each angle of a regular 26-gon?

Answers

Answer:

Angle of Regular polygon = 166.15° (Approx.)

Step-by-step explanation:

Given:

Regular polygon with 26 sides

Find:

Measure of each angle of Regular polygon

Computation:

Angle of Regular polygon = [(n-2)180] / n

where n = number of sides

Angle of Regular polygon = [(26-2)180] / 26

Angle of Regular polygon = [(24)180] / 26

Angle of Regular polygon = [4,320] / 26

Angle of Regular polygon = 166.15° (Approx.)

A rectangular prism has a length of 12 inches, a height of 16 inches, and a with of 20 inches. What's the volume, in cubic inches

Answers

Answer:

3840in²

Step-by-step explanation:

Formula:

V = whl

Insert the values:

V = 20 * 16 * 12

Multiply the values:

V = 3840in²

Twice the product of 6 and 5 is three times as great as this number.what is the number

Answers

Answer:

The number is 20.

Step-by-step explanation:

The product of 6 and 5 is 30.

Two times the product of 30 is 60.

60 divided by 3 is 20.

The number is 20.

You pull a marble from a bag with 20 red 20 white and 10 green marbles. You hold onto it and then pull another marble. What is the probability of pulling a red marble and then pulling a green marble?

Answers

I don’t know man sorry that’s my fault

The probability of pulling a red marble and then pulling a green marble is,

⇒ 3 / 5

What is mean by Probability?

The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

We have to given that;

You pull a marble from a bag with 20 red 20 white and 10 green marbles.

Here, Total number of marbles = 20 + 20 + 10

                                                = 50

Thus, The probability of pulling a red marble is,

⇒ 20 / 50

⇒ 2 / 5

And, The probability of pulling a green marble is,

⇒ 10 / 50

⇒ 1 / 5

Therefore, The probability of pulling a red marble and then pulling a green marble is,

⇒ 2 / 5 + 1 / 5

⇒ 3 / 5

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ3

The sampling distribution for the ANOVA test is
a. the Z distribution.
b. the t distribution.
c. the F distribution.
d. None of the answer choices

Answers

Answer:

The F distribution

What is a fact family? (Saying "it's a family of facts" will not be accepted")

Answers

Answer: Fact families are 3 numbers that make up a set of related math facts

Step-by-step explanation:

.An example of a fact family for multiplication and division is 2, 3, and 6: 2 X 3 = 6, 3 X 2 = 6, 6 2 = 3, and 6 3 = 2.

Answer:

Step-by-step explanation:

A fact family is a set of subtraction and addition equations or sentences that involve the same numbers.

Megan saves $42 every 6 days. How much does she save in 1 day?

Answers

Answer:

7

Step-by-step explanation:

6x7=42

Step-by-step explanation:

$42 divided by 6 = 7 so Megan makes $7 each day.

Help me plsssssssssssssss

Answers

Answer:

Correct: A, B, C, E, AND F

Step-by-step explanation:

The reason being, that the larger the negative number, the smaller it gets. Think of it like this:

One person owes another, 8 dollars, and let's say he currently has none. So if he owes 8 dollars and he has none, then it would be 0-8, or, -8.

Now let's say someone else owes 200 dollars, and they have 100 dollars.

If they give 100 dollars, they still need to give another 100, right? so it would be -100 dollars, therefore, a greater debt than the guy with the 8 dollars.

If a negative number looks larger than another, in reality, it's just a bigger debt to pay, so it's smaller worth. -8 is larger than -100 because it's closer to 0.

Last example:

-100, -75, -50, -30, -23, -8, -2, 0, 1, 2, 3... See? -8 is closer to zero than -100, so it's larger.  

C is correct because negatives are smaller than positives. -1 is below 0, so it's smaller than 1, which is greater than 0.

Hope this helps :)

What is the average rate of change between coordinate points (4, 7) and (6, 10) ?

Answers

Answer: 2/3

Step-by-step explanation:

Rise over run shows it on average goes up 2 and over 3. 2 on top for rise, 3 on bottom for run. Hope it helps! Don't click on shady links

Find the interquartile range of the data. 4,6,4,2,9,1,12,7

Answers

Answer:

5

Step-by-step explanation:

1.) Order the numbers from least to greatest (1,2,4,4,6,7,9,12) then find the HIGHEST and LOWEST #.

2.)  Find the number in the very middle, which would be 4 and 6. Since it's not one number, add them both together and divide by 2 (4+6=10, 10/2=5). This will be your MEDIAN.

3.) Similar to step 2, find the number in the middle of the median and lowest number. Ignore the median in this. Since it's 2 numbers again, add both together and divide by 2 (2+4=6, 6/2 = 3, making the first interquartile 3).

4.) Repeat step 3, but instead of finding the number in the middle of the median and lowest number, use the highest number instead of the lowest. Since this also happens to be 2 numbers, repeat the same step of adding the numbers and then dividing by 2 (7+9=16, 16/2=8, making the second interquartile 8).

5.) Now, subtract both interquartiles. This should give you your answer (5).

Can Someone Help Me. ? Please

Answers

Answer:

the first answer maybe?

Step-by-step explanation:

i think the third one. im not sure

The Westminster Widget Company has an old machine that can produce 24 widgets in three hours. Now they have purchased a new
machine that can produce 48 widgets in four hours. Working together, how long will it take the two machines to produce 120
widgets?

Answers

9514 1404 393

Answer:

  6 hours

Step-by-step explanation:

The old machine produces widgets at the rate of ...

  (24 widgets)/(3 h) = 8 widgets/h

The new machine produces widgets at the rate of ...

  (48 widgets)/(4 h) = 12 widgets/h

The total rate of production of the two machines is ...

  (8 +12) widgets/h = 20 widgets/h

Then the time required to produce 120 widgets is ...

  (120 widgets)/(20 widgets/h) = 6 h

Working together, the two machines can produce 120 widgets in 6 hours.

Answer:

6

Step-by-step explanation:

took the test

26. Select all of the measurements greater
than 7 feet.
2 yards
2 yards 2 inches
2 yards 2 feet
3 yards

Answers

2 yards 2 inches and 2 yards 2 feet im pretty sure?

Find the area of the following
trapezoid:
8 cm
5 cm
4 cm
16 cm
A = [?] cm2

Answers

My bad i used S instead of A so just switch the letter. hope this helps tho have a nice day

Answer: A=48

Step-by-step explanation:

9. Waldo and Freddy caught fish one weekend. The dot plots show the lengths of the fish they caught. Length of Waldo's Fish + 16 15 17 18 19 20 21 22 Inches Length of Freddy's Fish​

Answers

The Range of the length of the fish caught by Freddy is Greater than the range of the length of the fish caught by Waldo.

Step-by-step explanation:

Anyone who know what the answer please?

Answers

Answer:

59

Step-by-step explanation:

180-60-61= 59

hope this helps

Answer:

59 degrees

Step-by-step explanation:

It says the answer in the question.

The angles add up to 180 degrees.

60 + 61 = 121 degrees

180 - 121 = 59 degrees

Find the area of the figure to the nearest thousandth.

Answers

Answer: 225

basically 15 times 15 is 225 and thats how you do the problem

Answer:

236.625

Step-by-step explanation:

Trust me I had the same problem .

The top of a coin has a radius of 2 cm.
What is the area of the top of the coin?
4π ​cm²
2π ​cm²
4 cm²
2 cm²

Answers

Answer:

I think is 2cm if I’m wrong plz correct me

Step-by-step explanation:

I’m guessing so no work

Ron has 24 coins with a total value of $3.00. The coins are nickels (5 cents) and quarters (25 cents). How many of each coin does he have?

Ron has__ nickels and __ quarters.

Answers

Answer:

Ron has 15 nickels and 9 quarters

Step-by-step explanation:

Create a system of equations where n is the number of nickels and q is the number of quarters he has:

n + q = 24

0.05n + 0.25q = 3

Solve by elimination by multiplying the top equation by -0.25

-0.25n - 0.25q = -6

0.05n + 0.25q = 3

Add them together and solve for n:

-0.2n = -3

n = 15

So, Ron has 15 nickels. Find how many quarters he has by subtracting 15 from 24:

24 - 15

= 9

So, Ron has 15 nickels and 9 quarters.

A man is in a lighthouse tower that is 65 ft. He spots a ship at sea at an angle of depression of 20°. How far is the ship from the base of the lighthouse to the nearest foot?

Answers

65*tan(20)=23.658 or 24

Answer:

24 feet

Step-by-step explanation:

distance away is x

tan(20)=x/65

65*tan(20)=x

x=23.65806... feet

round to the nearest foot

x=24

in triangle ABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of AC. Find the perimeter of trapazoid BMNC.

Answers

35

since m and n are the midpoints of ab and ac resistively

then ,bc=2mn=16

since m and l are the midpoints of ba and bc respectively

then, ac =2mn =10

then,nc =1/2 × 10 =5

similary, mb=6

then ,perimeter=nc+mb+mn+bc=5+6+8+16=35

What is the angle between any two windmills blades in the windmill

Answers

I think it’s 120. Hope this helps

HELP! WILL GIVE BRANLIEST

Answers

Answer:

X=11

Z=73

Step-by-step explanation:

So vertical angles are equal so to find X

107=12x-25

Solve the equation

x=11

4 angles are 360 degrees, we know 2 angles.

107+107= 214

360-214= 146

146 is the two angles added up, divide them by 2 to find each side

146/2= 73

Z=73

17. You sell large and small pictures at a fair. You sell a total of 16 pictures and made a total of
$350. If large pictures sell for $25 and small pictures sell for $20. How many of each did you
sell?

Answers

Make a system of equation
Let L be large pictures
Let S be small pictures
You know they add to 16 pictures
You know each cost

(L + S = 16) * 25
25L + 20S = 350
25L + 25S = 400
Subtract (elimination method)
-5S = -50, S = 10
L + 10 = 16, L = 6

Solution: 10 small pictures
6 large pictures

Six gallons of a salt solution consists of 35% salt. It is the result of mixing a 40% solution with a 30% solution. How many gallons of each of the solutions was used? Let x= the number of gallons of the 40% solution and y= the number of gallons of the 30% solution. The corresponding modeling system is {x+y=60.4x+0.3y=0.35(6). Solve the system by using the method of substitution.

Answers

look her at getmathhelp . com

I am giving 25 points! You don't have to answer the question :D
Sarah is going from home to school then to the library to study and finally to the part to meet with friends before going home. Find the distance Sarah will travel today based on the locations of each stop on the coordinate plane. Include:

Distances between all 4 locations

Total distance

Method used for each calculation


Sarah’s house (2,-5)

School (2,4)

Library (-3,4)

Park (-3,-5)

Answers

Answer:

thanks i guess

Step-by-step explanation:

HELP PLS !!!! ITS DUE IN AN HOUR

Answers

Answer:

its b i know that

Step-by-step explanation:

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