find the solutions of the quadratic equation.-x^2+7x-14=0

Answers

Answer 1

Answer:

Step-by-step explanation:

x =(-7+√-7)/-2=(7-i√ 7 )/2= 3.5000+1.3229i

 or:

x =(-7-√-7)/-2=(7+i√ 7 )/2= 3.5000-1.3229i


Related Questions

Esteban is 11 years older than Mya. Last year Esteban was twice as old as Mya. How old is Mya now?

Answers

Answer:

Mya is 12

Step-by-step explanation:

EEstaban is 11 years older so Estaban was 22 and Mya was 11

so now Maya is 12

Hope this helps! :)

Answer: 12 years old

Step-by-step explanation:

Let x be Esteban's age, and let y be Mya's age.

x = y + 11

x-1 = 2(y-1)

Substitute

y + 11 - 1 = 2 (y - 1)

Solve

y + 10 = 2y - 2

12 = y

Hope it helps :)

A rancher feeds one of her horses 6 scoops of corn each day during the winter. She feeds the horse half as much corn during the summer. How much corn does the rancher feed the horse each day in the summer?

Answers

Answer:

the answer is three

Step-by-step explanation:

because half of 6 is 3

The ratio of boys to girls in Mrs Ronaldo's math class 3 to 1. What percent of the class is girls?

Answers

Answer:  25%

Explanation:

Let's say this class has 3 boys and 1 girl. That means we have 3+1 = 4 students total. The percentage of girls is 1/4 = 0.25 = 25%

Mikey spent 16 hours and 36 minutes on a puzzle. He's almost done but needed 4 hours and 43 more minutes to complete it. How long did it take Mikey to finish the puzzle?

Answers

Answer:

21 hours and 19 minutes

Step-by-step explanation:

What is the mass of an object with a density of 3 g/mL and a volume of 112.5 mL? Show all work.

Answers

Answer:

337.5

Step-by-step explanation:

Based on the given conditions, formulate 3 112.5

Calculate the product or quotient: 337.5

2 lines intersect. A line with points R, S, U intersects a line with points V, S, T at point S.
In the diagram, which angles form a linear pair? Select three options.

∠RST and ∠RSV
∠RST and ∠TSU
∠RST and ∠VSU
∠TSU and ∠USV
∠TSU and ∠RSV∠

Answers

Step-by-step explanation:

here is your answer

enjoy

thanks to another users to give this answer

In 2010, an estimated 1.664 x 10^8 dollars in 1000 bills were in circulation. How many 1000-dollar bills were in circulation?

I'LL GIVE BRAINLIST OR WHATEVER IT'S CALLED JUST HELP ME AND STOP DELETING UR COMMENTS :/ thank u :)​

Answers

Answer: 166,400,000 1000 bills

$166,400,000,000

Answer:

166,400,000

sry for answering late!

Mother bought 3 cans of sardines at ₱17.80 each, 5 cans of milk at ₱38.85 each, 3kg sugar at ₱60.50 each, and 2 cans of corn beef at ₱78.85 each. Find the total amount bought. If she paid ₱500 bill, find her change.​

Answers

Step-by-step explanation:

Total amount is:

3*17.80 + 5*38.85 + 3*60.50 + 2*78.85 = 586.85

If the numbers are correct ₱500 won't be enough as the total amount exceeds it.

Question:

Mother bought 3 cans of sardines at ₱17.80 each, 5 cans of milk at ₱38.85 each, 3kg sugar at ₱60.50 each, and 2 cans of corn beef at ₱78.85 each. Find the total amount bought. If she paid ₱500 bill, find her change.

Statement:

Mother bought 3 cans of sardines at ₱17.80 each, 5 cans of milk at ₱38.85 each, 3kg sugar at ₱60.50 each, and 2 cans of corn beef at ₱78.85 each.

Solution:

The total amount for which she had brought the items

= ₱ (3×17.80 + 5×38.85 + 3×60.50 + 2×78.85)

= ₱ (53.40 + 194.25 + 181.50 + 157.70)

= ₱ 586.85

Answer:

The total amount for which she had brought the items is ₱ 586.85.

I cannot solve the second part of the sum because the amount exceeds ₱ 500.

Hope it helps

Help help help help

Answers

Answer:

17 - 2= 15

so if you do

15 ÷ 3 = 5

so x= 5

rewrite the equation in standard form y = - 3/4 x - 6

Answers

Answer:

Step-by-step explanation:

[tex]y =\dfrac{-3}{4}x -6[/tex]

Multiply the entire equation by 4,

[tex]4*y=\dfrac{-3}{4}x*4 - 6*4\\[/tex]

4y = -3x - 24

Add 3x to both sides

3x + 4y = -24

Add 24 to both sides

3x + 4y + 24 = 0


Anna Page, a teacher, earns $1.320 semimonthly. If the school's insurance plan costs a total of
$2,868 and it pays 75 percent of the cost, how much is deducted from each of Page's
paychecks?
Do Hors senderized Meta RecticeMelvin divers, a traveling salesman, has company medical
this
insurance as well as travel insurance. The company he works for pays 60 percent of the
medical insurance and 90 percent of the travel insurance. If the medical insurance has an
annual cost of $3,500 and the travel insurance costs $1,200 per year, what total amount is
deducted from his weekly paycheck for insurance?
A. $2923 B.-561.15 G365 D. 59.04

Answers

Answer A

$2923
Because it can’t be an negative answer and has to be reasonable

(a) The amount that is deducted from each of Page's paychecks semimonthly is $717.

(b) The amount deducted per week is option A, $29.23.

(a) Given that:

The amount earned by Page semimonthly = $1320

Total cost for the insurance plan = $2868

The school pays 75 per cent of the cost.

The percentage of the insurance cost that Page has to pay = 100% - 75% = 25%.

The amount deducted from the paycheck of Page is:

A = 25% × $2868

  = $717

(b) Given that:

The annual cost of medical insurance = $3500

The percentage of this insurance he has to pay = 100% - 60% = 40%.

Annual deduction from his paycheck = 40% × 3500

                                                              = $1400

The annual cost of travel insurance = $1200

The percentage of this insurance he has to pay = 100% - 90% = 10%.

Annual deduction from his paycheck = 10% × 1200

                                                              = $120

Total amount deducted per year = $1400 + $120

                                                       = $1520

Number of weeks in a year = 52 weeks

The amount deducted per week = [tex]\frac{1520}{52}[/tex]

                                                       = [tex]$29.23[/tex]

Hence, the correct option is A. $29.23.

Learn more about Percentage here :

https://brainly.com/question/14953910

#SPJ7

Which of the following can be used to solve for X

• Sine

•cosine

•tangent

•inverse sine

•inverse cosine

•inverse tangent

Solve for X
_________

Answers

Step-by-step explanation:

Sine

The length of a rectangle is three cm more than twice the width. Perimeter is 78 cm.

Answers

Answer:

width = 12cm and the length = 27cm

Step-by-step explanation:

Which of the following represents the equation of a line that is parallel to 2y-x=16 and passes through the
point (-6, 1)?

Answers

The correct equation would be Y=1/2x+4 :)

This is true because both equations have the same slope therefore they are parallel and the equation above also includes point (-6,1).

The equation of a line that is parallel to (2y - x = 16) and passes through the  point (-6, 1) is [tex](y - 1)=0.5(x+6)[/tex] and this can be determined by using the slope-intercept form of the line.

Given :

Line Equation -- 2y - x = 16Point  --  (-6,1)

First, convert the given line in slope-intercept form that is in the form of (y = mx + c).

2y = x + 16

[tex]y = \dfrac{1}{2}x +16[/tex]

Comparing the above equation with slope-intercept form.

m = 0.5

c = 16

The line parallel to the line (y = 0.5x + 16) means the slope of that line is also equal to 0.5.

The equation of the line whose slope is m and passing through the point [tex](x_1,y_1)[/tex] is given by:

[tex](y-y_1) = m(x-x_1)[/tex]

Now, put the value of slope m and point [tex](x_1,y_1)[/tex] in the above equation.

[tex](y - 1)=0.5(x+6)[/tex]

So, the equation of a line that is parallel to (2y - x = 16) and passes through the  point (-6, 1) is [tex](y - 1)=0.5(x+6)[/tex].

For more information, refer to the link given below:

https://brainly.com/question/21835898

1. Anthony and his sister, Ciara, are saving their money to buy $240 MP3 players. They each plan to buy their own player.
Anthony starts off with $50 in his bank account and adds $20 each week. Ciara starts off with $10 in her bank account and
adds $30 each week. Complete each of the tables below based on the information given. The first table has been started for
you.
Anthony
Ciara
Week (x)
Process
Total dollars
(y)
Week (x)
Process
Total dollars
(y)
0
50 + 20.0
50
0
1
50 + 20 1
70
1
2
2
3
3
3
4
4
5
5
8
00
8
10
10

Answers

Answer:

See below.

Step-by-step explanation:

Anthony                                                              Ciara

Week (x)    Process     Total dollars    Week (x)    Process  Total dollars

                                             (y)                                                      (y)

0                50+20•0        50                     0            10+30•0          10

1                 50 + 20•1       70                      1             10+30•1           40

2                 50 + 20•2      90                    2             10+30•2          70

3                 50 + 20•3      110                    3             10+30•3        100

4                 50 + 20•4      130                   4             10+30•4        130

5                 50 + 20•5      150                   5             10+30•5        160  

8                 50 + 20•8      210                   8             10+30•8        250

10                50 + 20•10    250                 10            10+30•10        310

Given:



A

E

D





A

C

B

.

∠AED≅∠ACB.


Prove:



A

B

C





A

D

E

∠ABC≅∠ADE.


Answers

The triangles have a common vertex angle, and a given pair of

corresponding and congruent angles, they are therefore similar triangles.

∠ABC ≅ ∠ADE  (CASTC)

Reasons:

The given parameters are;

∠AED ≅ ∠ACB

By observation, we have that ΔAED and ΔACB have ∠A = ∠DAE and ∠A =

∠BAC in common.

Therefore, ∠DAE ≅ ∠BAC, by reflexive property.

Two angles of ΔAED (∠AED and ∠DAE) are congruent to two angles in

ΔACB.

(∠ACB and ∠BAC), which gives that ΔAED and ΔACB are similar by AA

Angle-Angle similarity postulate, and by Corresponding Angles of Similar

Triangles are Congruent CASTC we have;

∠AED ≅ ∠ACB

∠DAE ≅ ∠BAC

∠ABC ≅ ∠ADE

Learn more here:

https://brainly.com/question/4638844

a
Convert 0.58 into
percentage

Answers

Answer:

58%

Step-by-step explanation:

Answer:




Is 58% converted from 0.58

what is the equation of the line in slope intercept form that passes through the points (1,7) and (2,11)

Answers

Answer:

slope = y^2 - y^1 / x^2 - x^1 = 4

your slope would be 4

Step-by-step explanation:

What are the types of roots in a quadratic equation?

Answers

Answer:

There are three types of roots of a quadratic equation ax2+bx+c=0 a x 2 + b x + c = 0 : Real and distinct roots. Real and equal roots. Complex roots.

Step-by-step explanation:

Hope this helps!

Can u plz mark me as brainliest? plz :)

Tom works for a company.
His normal rate of pay is £15 per hour.
When Tom works more than 7 hours per day, he is paid overtime for
each hour he works more than 7 hours.
7
Tom's rate of overtime pay per hour is 13 times his normal rate of pay per hour.
On Monday Tom worked for 11 hours.
Work out the total amount of money Tom earned on Monday.
The final line of your answer must say, Total = ...
1
+
Total marks: 4

Answers

Answer:

£885

Step-by-step explanation:

(11-7)x15x13+7x15

=

4x15x 13+105

=

780+105

=

885

{ Arithmetic}

The total amount of money that Tom earned on Monday is £885.

Based on the information given in the question, the calculation to solve the question goes thus:

= [(11 - 7) × 15] × 13 + (7 × 15)]

= (4 × 15 × 13) + 105

= 780 + 105

= £885

Therefore, the total amount of money that Tom earned on Monday is £885.

Read related link on:

https://brainly.com/question/15388921

LAST 1 I SWEARRRR !!

Answers

Answer:

100 i believe

Step-by-step explanation:

I guess subtract 45 from 145

Answer:

80 look at the angels it 80! i had the same exact test today

Step-by-step explanation:

U= 1 A solution to the inequality below??

10>u

Answers

Answer:

Yes

Step-by-step explanation:

10>1

Find the measure angle measure.

Answers

Answer:

42.3

Step-by-step explanation:

add both angles then subtract by 180 and the negative number is your answer

May I please receive help???

Please

Answers

Answer:

sorry i don't know the answer!

Step-by-step explanation:

if i knew i would'v helped..

The answer is 86 - 12= 74

An item on sale costs 65% of the original price. The original price was $25.

Answers

Answer:

$16.25

65% = 0.65

0.65 x $25 = $16.25

Hope this helps! (And I think thats what the question was)

Solve:
x + y = 7
3x - 2y = 11

By using Substituting method.​

Answers

[tex]\large\underline{\sf{Solution-}}[/tex]

[tex]\sf \longmapsto x + y = 7 \: \: - - - (i)[/tex]

[tex]\sf \longmapsto 3x - 2y = 11 \: \: - - - (ii)[/tex]

By first equation,

[tex]\sf \longmapsto x + y = 7[/tex]

[tex]\sf \longmapsto x = 7 - y[/tex]

Now, we can find the original value of y.

[tex]\sf \longmapsto 3x - 2y = 11[/tex]

[tex]\sf \longmapsto 3(7 - y) - 2y = 11[/tex]

[tex]\sf \longmapsto 21 - 3y - 2y = 11[/tex]

[tex]\sf \longmapsto 21 - 5y = 11[/tex]

[tex]\sf \longmapsto - 5y = 11 - 21[/tex]

[tex]\sf \longmapsto - 5y = - 10[/tex]

[tex]\sf \longmapsto y = \dfrac{ - 10}{ - 5} [/tex]

[tex]\sf \longmapsto y = 2[/tex]

Now, we can find the original value of x.

[tex]\sf \longmapsto x + y = 7[/tex]

[tex]\sf \longmapsto x + 2 = 7[/tex]

[tex]\sf \longmapsto x = 7 - 2[/tex]

[tex]\sf \longmapsto x = 5[/tex]

Therefore, the values of x and y are 5 and 2 respectively.

3.6w=2(0.8w+12)
no link pls ill give you a brainlist

Answers

Hi there! I am GraceRosalia (SilentNature), and I hope my answer will help you!

3.6w=2(0.8w+12)

Use the Distributive Property:

3.6w=1.6w+24

Move all the constants to the left side:

3.6w-1.6w=24

2w=24

Divide both sides by 1.8 to isolate w:

w=12

Hope this helps you!! Please mark Brainliest!!

~Just a joyful teen

[tex]SilentNature[/tex]

Answer:

W=12

Step-by-step explanation:

3.6w=2(0.8w+12)

3.6w=1.6w+24

Subtract 1.6w from both  sides

3.6w-1.6w=1.6w+24-1.6w

Simplify

2w=24

Divide both sides by 2

2w/2=24/2

Simplify

w=12

If the second quantity in a rate is not 1, how do you find the unit rate?

Answers

Answer:

If you have a rate, such as price per some number of items, and the quantity in the denominator is not 1, you can calculate unit rate or price per unit by completing the division operation: numerator divided by denominator.

Holly's soccer team is trying to raise $2,100 to travel to a tournament in Florida, so they decided to host a pancake breakfast. Each person must pay $30 for the breakfast. How many people need to attend their breakfast in order to raise $2,100?

Answers

Answer:

70 people

Step-by-step explanation:

30 dollars for each person, so you divide 2,100 by 30 to find how many people.

2,100/30=70

Answer:

70

Step-by-step explanation:

Target=$2,100

Money Earned from a single person=$30

Number of persons=$2,100 /$30 = 70

Thus, 70 people need to attend their breakfast in order to raise $2,100

Help please i beg you (;´༎ຶٹ༎ຶ`)

Answers

Answer:

A and D

Step-by-step explanation:

A. True, 7² = 49B. False, 100² = 10000, shown 1000C. False, (7/8)² = 49/64, shown 14/8D. True, 0.1² = 0.01
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