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
asambeis [7]
3 years ago
10

Help please! using quadratic formula round ti nearest hundred ​

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
3 0

Answer:

x = 0.19 or x = -0.76

Step-by-step explanation:

Equation: 7²-4x = 2

reordering the equation,

7x²-4x-2 = 0

Applying,

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

From the question,

Given: a = 7, b = -4, c = -2

Substitute these values into equation 1

x = [-4±√(-4²-(2×7×-2)]/(2×7)

x = [-4±√(16+28)]/14

x = (-4±√44)/14

Either

x = (-4+√44)/14

x = (-4+6.63)/14

x = 2.63/14

x = 0.19

or

x = (-4-√44)/14

x = (-4-6.63)/14

x = -10.63/14

x = -0.76

You might be interested in
​A gardener has 1000 plants. He wants to plant these in such a way that the number of rows and
sdas [7]

Answer: 24 plants

Step-by-step explanation:

1000 is not a perfect square.

31^2  < 1000 < 32^2

 

Required no. of trees = 32^2  − 1000

= 1024 − 1000

= 24

3 0
3 years ago
Please help me with this problem!!!
Lilit [14]

3  {}^{4x  - 5}  = ( \frac{1}{27} ) {}^{2x + 10}  \\ note  \: \: that =  \\ ( \frac{1}{27} ) = ( \frac{1}{3 {}^{3} } ) = 3 {}^{ - 3}  \\  \\ 3 {}^{4x - 5}  = (3 {}^{ - 3} )  {}^{2x + 10}  \\ 3 {}^{4x + 5}  = 3 {}^{ - 3(2x + 10)}  \\ equal \:  \: bases =  > equal \: exponents

4x - 5 =  - 3(2x + 10) \\ 4x - 5 =  - 6x - 30 \\ 4x  + 6x =  - 30 + 5 \\ 10x =  - 25 \\ x =   - 2.5

7 0
2 years ago
Read 2 more answers
1. A die is rolled once. What is the probability of rolling :
aleksklad [387]
Assuming this is a 6-sided die:

(a) 1/6 = 0.167 or 16.7 %
(b) zero (numbers on the die are 1-6)
(c) 3/6 = 50% (can be 2, 4, or 6)
(d) 3/6 = 50% (of the numbers you could roll, 2, 3, and 5 are prime)
7 0
3 years ago
Which answer choice is this?<br> A 33<br><br> B 60<br><br> C 72<br><br> D 65
Artemon [7]

Answer:

x = 11

Step-by-step explanation:

• All interior angles in a triangle add up to 180.

• The square in the triangle represents 90°

90 + 45 + 1 + 4x = 180

136 + 4x = 180

4x = 180 - 136

4x = 44

x = 11

3 0
3 years ago
Which number from the set {5, 10, 15, 18} makes the equation true?
Vlada [557]

Answer

Letter B

Step-by-step explanation

x=10 because

2x{ 10}+ 3  =23

X{10} + 4= 14

23+ 14= 37

3 0
3 years ago
Read 2 more answers
Other questions:
  • Rhonda was organizing photos in a photo album. She took 60 photos and divided them evenly between p pages. Which algebraic expre
    6·1 answer
  • Helllp this is easy​
    5·2 answers
  • If B is the midpoint of AC. AB = 4v and AC = 5v + 24. what is BC?
    9·1 answer
  • How to solve 32-2(23-16)+4*4*3
    6·2 answers
  • Help with this question please
    10·2 answers
  • PLZZZZZ NEED HELP!!!!!!
    13·1 answer
  • How do I take a picture of a question
    8·2 answers
  • What is the area of the irregular polygon shown below?
    9·1 answer
  • Naomi says that the graph represnts a proportional relationship because it is a straight line. Is Naomi reasoning correct explai
    12·1 answer
  • Factor z3 + 2z2 - 9z - 18. (z - 3)(z + 3)(z + 2) (z 2 + 9)(z - 2) (z 2 + 2)(z - 9)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!