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
babunello [35]
3 years ago
13

Using the quadratic equation formula to solve 7x^2-x=7, what are the values of x

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0

quadratic formula:

x = <u>-b ± √(b² - 4ac)</u>

             2a

7x² - x = 7

subtract 7 from both sides:

7x² - x - 7 = 0

plug values into the quadratic formula:

x = <u>-(-1) ± √((-1)²- 4(7)(-7))</u>

               2(7)

simplify:

x = <u>1 ± √(197)</u>

           14

You might be interested in
Toby was baby-sitting a baby that weighed 264 ounces. How many pounds did the baby weigh?
Naily [24]
Answer: the baby weighs 16.5 pounds
3 0
2 years ago
Read 2 more answers
8 divided by (7 - 3) x ( 4 + 6)<br> Equals?
gregori [183]

8÷(7-3)x(4+6)

8÷4x10

2x10

<u>20</u>

3 0
3 years ago
1.Find the dot product of the two given vectors, u=(1,6) and v=(-5,-2) 2. Find the dot product of v=-7i+4j and w=-6i+5j
Svet_ta [14]
The dot product of the two vectors will be given as follows:
v*w=(-7i+4j)*(-6i+5j)
=(-7*(-6))i+(4*5)j
=-42i+20j

Hence the answer is:
v*w=(-42i+20j)
8 0
3 years ago
Read 2 more answers
R(x)=2√x s(x)=√x (r/s)(3)
anygoal [31]
This is a trick question. First just understand that any number over itself is 1 so \frac{2 \sqrt{x} }{\sqrt{x}} is just 2 *  \frac{ \sqrt{x} }{ \sqrt{x}} = 2 so it is just 2
5 0
3 years ago
Read 2 more answers
Simplify 0.95x-9-1/2x(36-18y)-0.25(-3x+4.8)
iris [78.8K]

Answer: 9xy−16.3x−10.2

Step-by-step explanation:

Distribute:

=0.95x+−9+9xy+−18x+(−0.25)(−3x)+(−0.25)(4.8)

=0.95x+−9+9xy+−18x+0.75x+−1.2

Combine Like Terms:

=0.95x+−9+9xy+−18x+0.75x+−1.2

=(9xy)+(0.95x+−18x+0.75x)+(−9+−1.2)

=9xy+−16.3x+−10.2

7 0
3 years ago
Other questions:
  • Twice a number is more than the sum of that number and 14.
    11·2 answers
  • Determine the value of a so that the line whose equation is ax+y-4=0 is perpendicular to the line containing the points (2,-5) a
    12·1 answer
  • Solve the following equation for x.<br><br><br> A. <br><br> B. <br><br> C. <br><br> D.
    9·2 answers
  • fill in the blanks to complete the statements about the numbers 0.04 and 0.004. In 0.04, the digit 4 is in the place. In 0.004,
    10·1 answer
  • What is a unit rate math
    10·1 answer
  • Which sequences are geometric? Check all that apply.
    15·1 answer
  • Determine whether each pair of actions results in independent or dependent events.
    10·1 answer
  • Write the number in standard form and expanded form. Three million four hundred eighty- seven thousand six hundred fifty-one​
    8·1 answer
  • A triangle with vertices A(0,0), B(6,0), and C(0,9) is rotated 360 about the y-axis. What is the volume of the figure?
    7·1 answer
  • Please help me with mathematics grade 11​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!