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Alecsey [184]
2 years ago
13

(X+9)(x-2)-9x-6 is equivalent to?

Mathematics
1 answer:
Allushta [10]2 years ago
4 0

Answer:

x^{2} - 2x - 24

Step-by-step explanation:

(x + 9)(x - 2) - 9x - 6

x^{2} - 2x + 9x - 18 - 9x - 6          Multiply.

x^{2} - 2x - 24                              Combine the like terms.

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For it's checking plus account a bank charges $3.95 per month plus $0.10 for each check written after the first ten checks writt
sp2606 [1]

Answer:

$5.35.

Step-by-step explanation:

The number of checks written after the first 10 = 24 - 10 = 14.

The fees for these checks = 14 * 0.10

= $1.40.

So his fees for March are 3.95 + 1.40

= $5.35.

C.  they might miss realising that the first 10 checks are free.

8 0
3 years ago
If x+2y=3 and xy=2 show that x³+8y³+9=0​
kicyunya [14]

Step-by-step explanation:

<u>Given</u>

  • x + 2y = 3 and xy = 2
  • show that x³ + 8y³ + 9 = 0​

<u>Solution in steps:</u>

  • (x + 2y)³ = 3³
  • x³ + 3x²(2y) + 3x(2y)² + (2y)³ = 27
  • x³ + 6x(xy) + 12y(xy) + 8y³ = 27
  • x³ + 8y³ + 6(x + 2y)xy = 27                    ⇒  Substitute values
  • x³ + 8y³ + 6*3*2 = 27
  • x³ + 8y³  + 36 - 27 = 0
  • x³ + 8y³  + 9 = 0

Done

4 0
3 years ago
PLZ HELP
docker41 [41]

Answer:

61

Step-by-step explanation:

a_{1}=5\\a_{n}=2a_{n-1}+3\\a_{2}=2*5+3=13\\a_{3}=2*13+3=29\\a_{4}=2*29+3=61

3 0
3 years ago
PLEASE HELP ITS SO IMPORTANT
dangina [55]

Answer:

I think they first one is .5 and I'm not sure on the other

7 0
3 years ago
Read 2 more answers
A bottle contains 1.7 L of water. A second bottle contains 450 mL of water. What is the total number of mL of water in both bott
amm1812

Answer:

2150 mL

Step-by-step explanation:

1L=1000mL - convert

1.7mL=1700mL - convert problem numbers

1700+450mL - addition

2150mL- answer

5 0
3 years ago
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