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
mr Goodwill [35]
3 years ago
8

20 Point!

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0

determinant: \sqrt{b^2-4ac}

(a) x^2+4x+5=0\\D=4^2-4\cdot1\cdot5={-4}\\D

D<0 means there are no real roots. there are two complex roots with imaginary components.

(b) D=16+20=36>0

D>0 means there are two real roots

(c) D = 20^2-4*4*25 = 0

D=0 means there is one real root with multiplicity 2


You might be interested in
Hi. gvyvyxgcyvjbhcrxtubibyctctvubitctcibivyctbuhbygtfet. can you read this in 10 seconds
Hunter-Best [27]
Yes I done it happy new year and a happy evening wish you a happy Christmas
8 0
2 years ago
Read 2 more answers
Can someone please help me with these 2 questions
soldi70 [24.7K]
Number 8 would be B. Number 9 would be A. Hope this helps! Mark brainliest? :))
3 0
2 years ago
Read 2 more answers
Chris bought six pounds of apples for 10.80. How much would 15 pounds of apples cost at the same price per pound?
muminat

Answer:

$27

Step-by-step explanation:

10.80/6=1.8

1.8×15= 27

the cost is $1.80 per pound

6 0
3 years ago
Read 2 more answers
(X-2)²+(y-1)²=25 how do you do this problem?
Tasya [4]
(x-x_c)^2+(y-y_c)^2=r^2\\&#10;(x_c,y_c) - \text{center}\\\\&#10;(x-2)^2+(y-1)^2=25\\&#10;\text{center}=(2,1)\\&#10;r=\sqrt{25}=5
5 0
2 years ago
7.
nika2105 [10]

Answer:

B. {–3, 5.9, 8.3}

Step-by-step explanation:

The domain is the set of all the values of  

x .The range is the set of all the values of  y .

Domain: { 3.2 , 7.6 , 1.4 , − 9.1 }

Range: { − 3 , 5.9 , 8.3 }

Answer:

range is -3, 5.9 , 8.3

Step-by-step explanation:

{(3.2, –3), (7.6, 5.9), (1.4, –3), (–9.1, 8.3)}

We are given with set of ordered pairs (x,y)

In each ordered pair, x is the domain and y is the range

for domain , take all the x  values (first number) from the ordered pairs

for range, take all the y value (second number) from the ordered pairs

y values of the ordered pairs are -3, 5.9, -3, 8.3

So range is -3, 5.9 , 8.3

3 0
2 years ago
Other questions:
  • What decimal is equilvalent to 3/8
    10·2 answers
  • I will give U 15 pt Please help the last 2 answers are
    14·1 answer
  • 8/2(2+2) please help
    14·2 answers
  • Can an obtuse triangle have a right angle? why or why not?
    6·1 answer
  • Evaluatethe expression shown for m = 350. 3.5m
    7·2 answers
  • A​ sparkling-water distributor wants to make up 200 gal of sparkling water to sell for $ 5.00 per gallon. She wishes to mix thre
    7·1 answer
  • PLS ANS THIS QUESTION PLS
    6·1 answer
  • IM CONFUSED. WILL GIVE BRANLIEST What is the value of x?
    11·2 answers
  • Write two numbers that multiply to the value on top and add to the value on bottom -6 x -5
    7·1 answer
  • Jake tossed a paper cup 50 times and recorded how it landed. the table shows the results:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!