1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tangare [24]
3 years ago
14

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

Mathematics
1 answer:
erastova [34]3 years ago
8 0

Answer:

C) {6+√43, 6-√43}

Step-by-step explanation:

Applying,

x = [-b±√(b²-4ac)]/2a.................... Equation 1

From the question,

Given: a = 1, b = -12, c = 7

Substitute these values into equation 1

x = [-(-12)±√(-12²+4×1×7)]/2×1

x = [12±√(144+28)]/2

x = [12±√172]/2

either,

x = (12-√172)/2

x = (12-2√43)2

x = (6+√43)

or

x = (12+√172)/2

x = (12+2√43)/2

x = (6+√43)

Hence,

The right answer is C). {6+√43, 6-√43}

You might be interested in
A 50-year-old tree of a certain species may capture about 0.02 metric tons of carbon dioxide each year. In 2014, 1,562,000,000 m
Archy [21]

Ha eid ajek owvegv broyhw ksyw gvis. Eso se

5 0
2 years ago
Car is moving on a circle on a plane. At time t (seconds), its x-coordinate is given by x(t) = 10 sin(200t + 3) + 30 while its y
Aleks [24]

Answer:

we have centre of circle as (30,40) and radius = 1

Step-by-step explanation:

Given that a car is moving on a circle on a plane.

At time t (seconds),

x(t) = 10 sin(200t + 3) + 30

and

y(t) = 10 cos(200t + 3) + 40

x-30 = 10 sin(200t + 3) \\y-40 = 10 cos(200t + 3) + 40

when we square and add both the equations we get

(x-30)^2 + (y-40)^2 = 1

(since sin square + cos square = 1 always)

i.e. we have centre of circle as (30,40) and radius = 1

3 0
3 years ago
Which of the following are exterior angles? Check all that apply.
Marina86 [1]

Answer:

A

C

D

E

Step-by-step explanation:

Exterior angles can be described as the angles that are formed between the side of a polygon and the extended adjacent side of the polygon.

Or an exterior angle is the angle that is not inside the triangle formed.

The angles inside the triangle are interior angles.

Exterior angles are :

2

3

4

6

Interior angles are :

1

5

6 0
3 years ago
First, I add 1. Then, I multiply by 2. Next, I divide by 3. As a result, I get 4. What is my starting number?
Ira Lisetskai [31]

Answer:5

Step-by-step explanation:

reverse the steps

2(x+1)/3=4

2(x+1)/3×3=4×3

2(x+1)/2=12/2

x+1=6

x=6-1

x=5

6 0
3 years ago
Read 2 more answers
What is the degree of the polynomial? 3.75x^5- 7.25x^7+9.5- 6.75x^6
gregori [183]
The degree of the polynomial is 7
8 0
3 years ago
Other questions:
  • What is the 8th term in the sequence?
    10·1 answer
  • Write the following numbers in decimal form. (Note: Some of these numbers have been rounded.)
    13·1 answer
  • What is 9.22 x 10^3 In standard form
    10·2 answers
  • Nine less than two-thirds a number is greater than twenty-five. Which inequality BEST represents this situation?
    14·1 answer
  • Can a triangle with the following sides exist? 7, 8, 1
    8·1 answer
  • When animals or humans build things, they choose materials based on their​
    13·2 answers
  • AS ALWAYS, DUE TODAY! Pls and thanks. NOTE- Legit answers only! Legit answers= Brainliest, 5.0 stars, and a Thanks.
    15·1 answer
  • A box shaped like a rectangular prism has the dimensions: 4 inches by 2 1/2 inches by 2 inches. The box is filled with smaller c
    14·2 answers
  • HEY YALL CAN U HELP PLZ THANK U
    13·1 answer
  • Find the volume of a rectangular prism with a length of 13.4 ft, a width of 10.3 ft and
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!