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IgorLugansk [536]
3 years ago
14

How many and what type of solutions?

Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0
Hello,

2k²-3k-9=0
==>k=3 or k=-3/2

Answer C two rational solutions.
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Todd has twice as many songs in his playlist as Vlad. Becca has three times as many songs in her playlist as Todd. If all three
nikitadnepr [17]

Answer:

Todd has 540540 songs in his playlist.

Vlad has 270270 songs in his playlist.

Becca has 162162 songs in her playlist.

Step-by-step explanation:

# of songs Todd has = T

# of songs Vlad has = V

# of songs Becca has = B

1) Todd has twice as many songs in his playlist as Vlad:

T=2V

2) Becca has three times as many songs in her playlist as Todd:

B=3T

3) All three people have a total of 243243 songs in their playlists:

T+V+B=243243

Because T=2V then you can substitute T as 2V in the second equation:

B=3(2V)

B=6V

Now in the final equation, you can substitute everything for V:

2V+V+6V=243243

9V=243243

V=27027

Now substitute for T:

T+1/2T+3T=243243

9/2T=243243

T=54054

Now substitute for B:

1/3B+1/6B+B=243243

3/2B=243243

B=162162

Check answers:

27027+54054+162162=243243

243243=243243

3 0
3 years ago
school X and school Y play each other in a competition. School X has eight more points that school Y . School X has three times
Alja [10]
Y = 4
x = 12
Why: 4 x 3 = 12
4 + 8 = 12
5 0
3 years ago
Read 2 more answers
HELP DUE IN 10 MINUTES!
vfiekz [6]

Answer:

68

Step-by-step explanation:

97.65 is roughly 100

68℅ of 100 is 68

so it's 68

5 0
3 years ago
Read 2 more answers
How to Simplify (x-2)(3x2 + 3x + 2) to a polynomial in standard form:
swat32
Answer: 3x^3 - 3x^2 - 4x - 4

Explanation:

(x - 2)(3x^2 + 3x + 2)

= x(3x^2 + 3x + 2) - 2(3x^2 + 3x + 2)

= 3x^3 + 3x^2 + 2x - 6x^2 - 6x - 4

= 3x^3 - 3x^2 - 4x - 4
6 0
3 years ago
Please help me to solve this question. ​
tino4ka555 [31]

Answer:

A=266CM

Step-by-step explanation:

p=2l + 2w                                   l=2x+1             w=x+5

66=2[2x+1] + 2{x+5]                  l=2x9 + 1           w=9+5

66=4x+2 + 2x+10                      l=18+1                 w=14

66=6x+12                                   l=19

66-12=6x

54=6x                                      A=L x W

x=9                                         A=19 x 14

                                             A=266CM

3 0
3 years ago
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