Determine the number of roots the equation x^2+14x=-49 using the discriminant.

Answers

Answer 1

Answer:

[tex]\boxed {\boxed {\sf 1 \ real \ root}}[/tex]

Step-by-step explanation:

The quadratic formula is used to find the roots or zeroes of a quadratic equation. It is:

[tex]x=\frac{-b\pm \sqrt{{{b}^{2}}-4ac}}{2a}[/tex]

The discriminant helps us find the number of roots. If the discriminant is...

Negative: there are no real roots Zero: there is one real root Positive: there are two real roots

It is the expression under the square root symbol:

[tex]b^2-4ac[/tex]

First, we must put the given quadratic equation into standard form, which is:

[tex]ax^2+bx+c=0[/tex]

The equation given is [tex]x^2 +14x= -49[/tex]. We have to move the -49 to the left side. Since it is a negative number, we add 49 to both sides.

[tex]x^2+14x+49 = -49 +49 \\x^2+14x+49=0[/tex]

Now we can solve for the discriminant because we know that:

a= 1 b= 14 c= 49

Substitute these values into the formula for the discriminant.

[tex](14)^2 -4 (1)(49)[/tex]

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Solve the exponent.

(14)²= 14 * 14= 196

[tex]196- 4(1)(49)[/tex]

Multiply 4, 1, and 49.

[tex]196-196[/tex]

Subtract.

[tex]0[/tex]

The discriminant is zero, so the quadratic equation x²+ 14x = -49  has 1 real root.


Related Questions

BC has endpoints B(5,9) and C(-4,-3). Find the coordinates of the midpoint of BC.
I need help !!

Answers

Answer:

(0.5,3)

Hope this helps..Have a good day!!

TIME REMAINING
43:02
Which ordered pair makes both inequalities true?

y < –x + 1

y > x

On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (0, 1) and (1, 0). Everything below and to the left of the line is shaded. The second dashed line has a positive slope and goes through (negative 1, negative 1) and (1, 1). Everything above and to the left of the line is shaded.





(–3, 5)
(–2, 2)
(–1, –3)
(0, –1)
Mark this an

Answers

the answer of this question is (-2,2)

Help on 36 and 37 pls, the choices for 37 are 70,77,82, and 90

Answers

Answer:

36: G-30

37: Please add the rest of the questions, so I can answer 37.

Step-by-step explanation:

please help 15 points (picture)

Answers

Answer:

the first difference are all 20.

since the first differences of this relation are constant, it is a linear relation

Answer:

Linear because the account balance increases by a constant 20.

Step-by-step explanation:

→ The first difference is 20 for all values because :

20 - 0 = 20

40 - 20 = 20

60 - 40 = 20

80 - 60 = 20

100 - 80 = 20

HELPPPPPPPP
Which of the following is a geometric sequence?

Answers

Answer:

ES LA NUME  C                                        R

Step-by-step explanation:

Question 7 of 25
The graph of F(x) can be compressed vertically and shifted to the right to
produce the graph of G(X). If F(X) = x2, which of the following could be the
equation of G(x)?
A. G(x) = {(x - 6)
O B. G(x) = {(x+6)
O c. G(x) = 2(x+6)
O D. G(X) = 2(x-6)

Answers

No b could be the equation of G(X).

I’ll mark u as a brainliest!! pls help me

Answers

Answer:

Shorter leg is 7

Bigger leg is 7√3 = 12.1 (rounded to the nearest tenth)

Does anyone know the answer plz ?

Answers

Answer:

a = 20; b = 10sqrt(3)

Step-by-step explanation:

The ratio of the lengths of the sides of a 30-60-90 triangle is

1 : sqrt(3) : 2

b = 10 * sqrt(3)

b = 10sqrt(3)

a = 2(10)

a = 20

Answer: a = 20; b = 10sqrt(3)

Answer:

a=20,[tex]b=10\sqrt{3}[/tex]

Step-by-step explanation:

SOH-CAH-TOA

Tan = O/A

Tan(60)= b/10

[tex]b=10\sqrt{3}[/tex]

Cos = A/H

cos(60) = 10/a

a=20

Explain how the Quotient of Powers Property was used to simplify this expression. 5 to the fourth power, over 25 = 52

Answers

5^4/25 = 52
The quotient law states that x^m divided by x^n = x^m-n, so I think ;

We first change 25 to 5^ 2
Therefore,
5^4/5^2 = 52

5^4-2 =52

5^2 = 52

Then we change the sum to logarithmic form, which is b^x=y is the same as log (base) b (y)= x

So,
Log (base) 5 (52)= 2

Use the calculator to find the value of the log on your left and the answer is:

2.45504.... = 2

Therefore 2 (to the nearest whole number) = 2



What is the range of the function on the graph, I hope you can see it

Answers

Answer:

Option 4. All real numbers greater than or equal to 2.

I hope this will help.

find the value of x in the triangle.​

Answers

Answer:

The answer is 36°.

Hope it helps.

Step-by-step explanation:

• • •

a shopkeeper sells a pant at 10% profit, if he would have sold it at rs.150 more than profit would have been 15% find the purchased price of the pant

Answers

Answer:

selling prices =10% 10+150+15%=180

Two numbers have a sum of 35 and an
LCM of 42. What are the two numbers?

HELP PLEASE <3

Answers

Answer:

14, 21

Step-by-step explanation:

LCM : least common multiplier.

x + y = 35

LCM = 42

means that there is a combination of 2 of the following divisors of 42 :

2, 3, 6, 7, 14, 21

so, which two of these numbers can create the sum of 35 ?

only 14 and 21

PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!

Answers

Answer:

D

Step-by-step explanation:

Facts:

Minimum - can be found as the least valuable number in the box plot

First Quartile - can be found in the first point of the box around

Median - middle number in the set

Third Quartile - can be found as the last point of the box

Maximum - can be found as the greatest valuable number in the box plot
•••••••••••••••••••••••••••••••••••••••••••••••
Answers:

Minimum - 13

First Quartile - 23

Median - 35

Third Quartile - 44

Maximum - 55

What is the slope of the line?
y

slope = 13
slope = -3
slope =3

Answers

Answer:

slope = 3

Step-by-step explanation:

Take a look at the grid, when the x = 0, y = -2, so it means you have a function with form y = a•x - 2

Now, look at the grid lime when x = 2, at this point, y = 4. If the function doesn't had -2, y in x = 2 would be 4 + 2 = 6

Which number you multiply 2 to have 6? Number 3, so this is the slope, and the function is y = 3x -2

Answer:

3

Step-by-step explanation:

Start at the y-intercept

Slope is rise (up/down) over run (move to the right/left)

First you rise 3

And you run 1

3/1 is 3 thus 3

HURRY!!!!! HELP PLEASE!!!! NO SPAM!!!!!!!!!There are two identical oil tanks. The level of oil in Tank A is 6 ft and is drained at the rate of 0.5 ft/min. Tank B contains 10 ft of oil and is drained at the rate of 1 ft/min. After how many minutes will the level of oil in the two tanks be the same?

Answers

Answer:

8 munutes

Step-by-step explanation:

let :

x is the final level for both tanks (in ft) and

t is the time (in minutes)

the equation :

x = 6 - 0.5 t (eq.1)

x = 10 - 1t (eq.2)

eq. 1 = eq. 2

=>

6-0.5t = 10-1t

1t - 0.5t = 10-6

0.5t = 4

t = 4/0.5 = 8

t = 8 minutes

Answer:               8 minutes

Step-by-step explanation:

Write an equation for the level of oil in each tank.

Let t = the number of minutes.

Tank A: y = 6 − 0.5t

Tank B: y = 10 − 1t

Solve the system by using a table of values

When t = 8 minutes, the level in both tanks will be at 2 feet.

what is the solution?

Answers

Answer: x = 36

Step-by-step explanation:

[tex]\frac{2}{3} x-4=20\\\\\frac{2}{3} x=20+4\\\\\frac{2x}{3} =24\\\\2x=24*3\\\\x=\frac{72}{2} =36[/tex]

Lauren wants to know how many students in her school plan to see the new science fiction movie opening this weekend. She surveyed every Fitch student as they left the school on Friday.

Population:_____________

Sample:__________________

Is this sample reprsentive? Explain.
______________________________

Answers

Just to get pointsssss

The diameter of your bicycle wheel is 25 inches. How far will you move in one turn of your
wheel?
a) 25 in
b) 78.5 in
c) 250 in
d) 246.49 in
e) 50 in

Answers

Answer:

b) 78.5

Step-by-step explanation:

distance you will move = circumference of wheel = πd = π(25) = 78.53981

what is 40-32divited by8=5x-2

Answers

4.


40-32 is equal to 8.

8=5x-2 is equal to 2.


8/2 is 4.

A sequence starts 0, 5, ...

Give a rule the sequence could follow and the next 3 terms for that rule.

Give a different rule the sequence could follow and the next 3 terms for that rule.

Answers

Answer:

0, 5, 10, 15, 20

0, 5, 40, 405, 5,120

Step-by-step explanation:

One rule can be "add 5 to the previous term to get the next term."

0, 5, 10, 15, 20

Second rule:

For each term number 1, 2, 3, ..., n,

each term = 5(n - 1)^n

0, 5, 40, 405, 5,120

The next three terms for the rule Tn = a + (n-1)d will be 10,15 and 20

The next three terms for rule 5(n-1)ⁿ will be 40, 405 and 5120.

Sequences are numbers arranged in a specific pattern.

Given the sequence 0, 5...

This sequence can be an arithmetic sequence with nth term expressed as:

Tn = a + (n-1)d

a is the first term = 0

n is the number of terms

d is the common difference = 5 - 0  5

If n = 3

T3 = 0 + (3-1)*5

T3 = 2 * 5

T3 = 10

If n = 4

T4 = 0 + (4-1)*5

T4 = 3 * 5

T4 = 15

If n = 5

T5 = 0 + (5-1)*5

T5 = 4 * 5

T5 = 20

Hence the next three terms for the rule will be 10,15 and 20

Also, we can also use the recursive rule f(n) = 5(n-1)ⁿ

If n = 3

f(3) = 5(3-1)³

f(3) = 5(2)³

f(3) = 5 * 8

f(3) = 40

If n = 4

f(4) = 5(4-1)⁴

f(4) = 5(3)⁴

f(4) = 5 * 81

f(4) = 405

If n = 5

f(5) = 5(5-1)⁵

f(5) = 5(4)⁵

f(5) = 5 * 81

f(5) = 1024 * 5

f(5) = 5120

Hence the next three terms for the rule will be 40, 405, and 5120.

Learn more here: https://brainly.com/question/16151695

find the missing side. Round it to the nearest tenth.​

Answers

Answer: x = 74.3

Step-by-step explanation:

Let 22 be reference angle

so

tan 22 = p/b

tan 22 = 30/x

or, x= 30/tan22

so, x = 74.252

so, x = 74.3

PLEASE HELP, I'LL MARK BRAINLIEST.. Of the 37 teachers at Francesca's high school, 9 are female. What is the ratio of the number of male teachers to the total number of teachers? Please write in decimal form

Answers

The answer you are looking would be decimal 5.9

formula of (a^3+b^3)​

Answers

Answer:

[tex](a+b)(a^2-ab+b^2)=(a^3+b^3)[/tex]

Step-by-step explanation:

If 3r=4t+6​, what is the value of​ t?

Answers

it would be 3r - 4t = 6

20 points lovelys <3​

Answers

Answer:

A) 2 cm

Step-by-step explanation:

By definition, regular polygons have equal sides and angles. Therefore, each side of the regular hexagon must be equal. Since one side is marked as 2 cm, the length of PQ must also be 2 cm.

tại teamart,1 ly trà sữa có giá a đồng và 1 ly kem có giá là b đồng.Hãy viết biểu thức đại số biểu thị số tiền bạn Cúc mua 3 ly trà sữa và 4 ly kem

Answers

Answer:

3 a + 4 b

Step-by-step explanation:

Biểu thức đại số biểu thị bạn Cúc mua  3  ly trà sữa và  4  ly kem là:

3 a + 4 b

[tex]\sqrt{\frac{x-4\sqrt{x}+4 }{x+4\sqrt{x} +4} }[/tex]

Answers

Answer:

\begin{bmatrix}\mathrm{Solution:}\:&\:x\ge \:0\:\\ \:\mathrm{Interval\:Notation:}&\:[0,\:\infty \:)\end{bmatrix}

\begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)=1\:\\ \:\mathrm{Interval\:Notation:}&\:f\left(x\right)=1\end{bmatrix}

Step-by-step explanation:

This is the simplified answer.

Triangle OPR has length OR=5m, angle OPR = 90, find length QP​

Answers

Answer:

i don't know

Step-by-step explanation:

i don't know

2. The lines shown in the figure are parallel lines cut by a transversal. Angles a and e are:
b
a
d
8
h

Answers

Answer:

Corresponding Angles

Step-by-step explanation:

Angles a and e are corresponding angles and they are also congruent.

tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Other Questions
find each measurement indicated round your answers to the nearest tenth. Part 1d. NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!! Briefly explain why exponential growth within a population cannot last forever. URGENT, WILL GIVE BRAINLIEST IF CORRECT. 8 and 1311.5 and 23.6 22 and 15 The corpus callosum separates the brain into two halves. separates the brain into two halves. is a large network of neurons on the cerebral cortex. is a large network of neurons on the cerebral cortex. is a thick band of neural fibers enabling communication between the two brain hemispheres. is a thick band of neural fibers enabling communication between the two brain hemispheres. describes the hemispheres of the brain Using water sources for irrigation purposes has caused __________ in parts of Central Asia. A. floods B. droughts C. corrosion D. desertification Please select the best answer from the choices provided where and in which condition gold is found? draw the graph of the line: with a slope of -1/2 and that passes through the origin Complete this sentence with the correct form of avior Christine____ sommeil Based on previous knowledge of Greek values, what prediction can best be made about Antinous's future? Antinous's friends will rally around him, and he will be victorious in battle. Antinous will gain great power and win the heart of Penelope at last. Antinous's friends will turn on him, and he will suffer for his actions. Antinous will become a poor man and wanderer like Odysseus. A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used. Part 1. In January, the total cost for 150 minutes was $ 62 while in February, the total cost for 175 minutes was $ 64 . The constant charge for each minute used is:a. 0.09b. 0.1c. 0.08Part 2. The fixed montly fee charged by the carrier is;fee = $__________________ What role did thegovernment play inwestern settlement? How did the society originate? 1. What behavior on the part of the writer indicates that he is another speech day?2. What effect does the inclusion of the Glad Bag and Bert Newtons hair transplant among recent social changes have on the reader (3) What criticism does the writer make of the local MP?4. What does the writer find most frustrating about typical chems school speech days? (5) How would the author probably respond if the school jazz band played a bracket of numbers?(6) What criticism does the writer make of the book-token awards? (7) What is the name "Tess Trucheart intended to convey about school captain? (8) Which parents tend to feel that a speech day has been the best speech day the school ever had? (9) Is the speech day described here held at a primary school or a high school? Explain your reasoning. (10) Suggest three speech-day changes that the writer would approve of Rs 600 will gave Rs 90 simple interest at 5 % per annum. Neil conducted a study on a group of women in which they viewed cartoons for an hour under one of two environmental conditions "either alone or with other participants. After the study, the participants rated how much they enjoyed watching the cartoons under the two different conditions. What can be concluded based on the results of this study? why cells are sometimes called the building block of life? Coordinates of C and D are (-14 , 6) and (x , 13) respectively.Given x is a positive integer and the distance CD is 25 units.Find the value of x. what is Employment equity act? A storeowner orders 25 calculators that cost $38 each. The storeowner can sell each calculator for $42. The storeowner sold 22 calculators to customers. He had to return 3 calculators that were never sold and pay a $2 charge for each returned calculator (although the initial cost is refunded). What is the storeowner's profit? A square steel bar has a length of 5.1 ft and a 2.7 in by 2.7 in cross section and is subjected to axial tension. The final length is 5.10295 ft . The final side length is 2.69953 in . What is Poisson's ratio for the material