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
andriy [413]
2 years ago
8

Heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelp

Mathematics
1 answer:
Inessa [10]2 years ago
6 0

Step-by-step explanation:

1.

true

false

false

true

2.

yes

no

yes

no

yes

3.

A

4.

7,5 $

You might be interested in
__x4=12<br> 12÷4 =__ <br> The Number in the blanks represents :
Rama09 [41]
The number in the blanks is 3
3 0
3 years ago
show that thw roots of the equation (x-a)(x_b)=k^2 are always real if a,b and k are real. Please I really need help with this
VLD [36.1K]

Answer:

see explanation

Step-by-step explanation:

Check the value of the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real

• If b² - 4ac = 0 roots are real and equal

• If b² - 4ac < 0 then roots are not real

given (x - a)(x - b) = k² ( expand factors )

x² - bx - ax - k² = 0 ( in standard form )

x² + x(- a - b) - k² = 0

with a = 1, b = (- a - b), c = -k²

b² - 4ac = (- a - b)² + 4k²

For a, b, k ∈ R then (- a - b)² ≥ 0 and 4k² ≥ 0

Hence roots of the equation are always real for a, b, k ∈ R


           

8 0
3 years ago
A number cube is rolled 198 times. How many times would you expect to roll a 5?
Otrada [13]

Answer:

33 times

Step-by-step explanation:

we divide 198 by 6 because there are 6 sides on a dice and 199 ÷ 6 is 33

3 0
3 years ago
1. 5/2=-x/11<br><br> 2. 9/m=-4/11
alex41 [277]

Answer:

1. x = 55/2

2. x = - 99/4

5 0
3 years ago
An identification code is to consist of 2 letters followed by 3 digits. how many different codes are possible if repetition is n
Lena [83]
(26^2)*(10^3)
676*1000
676,000 possibilities
6 0
3 years ago
Read 2 more answers
Other questions:
  • If function f is defined by f x( ) = 3x2 − 5x + 4, what is f x( − 4) ?
    12·1 answer
  • Question 1.05 It is known from past experience that the life of traffic light bulbs is normally distributed with a standard devi
    10·2 answers
  • Find the area of the semicircular window. Round your answer to the nearest hundredth.
    13·2 answers
  • Question: A man standing in a field in New Hampshire sees Cannon Mountain in front of him. He knows that the height of Cannon Mo
    11·1 answer
  • Help me if you want to thank you have a good day!:D
    6·2 answers
  • Helppppopoop help help help
    12·2 answers
  • URGENT PLEASE HELP!!!!
    12·1 answer
  • Need this done soon pleasee!!
    13·1 answer
  • X +1 = -5<br> Graphing linear
    9·2 answers
  • What is the equation of the line that passes through the point (-5, -3) and has a<br> slope of -3?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!