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
chubhunter [2.5K]
2 years ago
8

K² = 76What is the answer?​

Mathematics
2 answers:
Simora [160]2 years ago
6 0

Answer:

± 8.7178 or ± the square root of 19

Step-by-step explanation:

Solve  :    k2-76 = 0

Add  76  to both sides of the equation :

                     k2 = 76

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     k  =  ± √ 76  

Can  √ 76 be simplified ?

Yes!   The prime factorization of  76   is

  2•2•19

To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).

√ 76   =  √ 2•2•19   =

               ±  2 • √ 19

The equation has two real solutions  

These solutions are  k = 2 • ± √19 = ± 8.7178  

Dmitry_Shevchenko [17]2 years ago
3 0

Answer:

k = 2 √ 19 , − 2 √ 19

Step-by-step explanation:

Take the root of both sides and solve.

You might be interested in
How come lemon washing up liquid contains real lemons, but lemon juice contains artificial flavorings.
attashe74 [19]

Answer:

Lemon juice is acidic and therefore is deemed unsafe to consume this can start to destroy the pancreas and other major arteries if not removed quickly

Step-by-step explanation:

3 0
3 years ago
EASY MATHS PLS HELP​
Fofino [41]

Answer:

(1.25, - 5 )

Step-by-step explanation:

Given the 2 equations

- 4x + 3y = - 20 → (1)

4x + 2y = - 5 → (2)

Adding the 2 equations term by term will eliminate the x- term

5y = - 25 ( divide both sides by 5 )

y = - 5

Substitute y = - 5 into either of the 2 equations and solve for x

Substituting into (2)

4x + 2(- 5) = - 5, that is

4x - 10 = - 5 ( add 10 to both sides )

4x = 5 ( divide both sides by 4 )

x = \frac{5}{4} = 1.25

Solution is (1.25, - 5 )

3 0
3 years ago
Read 2 more answers
Ben is a tour guide at museum. each tour group can have no more than 7 people/ If Ben give tours to 66 people . How many tours w
Nataly [62]
10 because 7x9 which is the closest you can get to 66 is 7x9 which is 63 and those 3 extra people need a tour too so thats another one
7 0
3 years ago
Read 2 more answers
kaylie has 164 stamps in her collection.her friend nellie has 229 more stamps than kaylie.how many stamps do kaylie and nellie h
STALIN [3.7K]
657 stamps is what they would have combined
3 0
3 years ago
What is a differential equation
pickupchik [31]
A differential equation is one that contains the derivative of a function.  For example f(x) + 3 = 4f'(x) - 2.  Usually you will be given one of the functions and initial conditions if you have to solve.
5 0
3 years ago
Other questions:
  • 3.1 Q17
    9·1 answer
  • Interest earned: ? Principal: $800 <br> Interest rate: 6.5% <br> Time: 2 years
    9·1 answer
  • The dingram shows a spinner innde up of a picce of card in the shape of a regular pentagon, with a toothpick pushed through its
    8·1 answer
  • What would 2, 3, and 4 be?
    9·1 answer
  • Find the volume. I will award best answer!! Please help me
    11·1 answer
  • One lap around the lake is 710 mile.
    7·1 answer
  • I just need the answer no explanation
    5·1 answer
  • How does the graph of g(x)=1/x-5. +2 compare to the graph of the parent function f(x)=1/x
    11·1 answer
  • (05.03 LC)A polygon is shown:
    14·1 answer
  • 31. The angle measures of a triangle are 28°, 70°, and 82°. Classify the triangle by its angle measures.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!