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NikAS [45]
3 years ago
7

Add or Subtract to Simplify: (5x + x2 - 4) - (4x - x2 + 6)

Mathematics
1 answer:
vlabodo [156]3 years ago
5 0

Answer:

2x to the second power +x−10

Step-by-step explanation:

Let's simplify step-by-step.

5x+x2−4−(4x−x2+6)

Distribute the Negative Sign:

=5x+x2−4+−1(4x−x2+6)

=5x+x2+−4+−1(4x)+−1(−x2)+(−1)(6)

=5x+x2+−4+−4x+x2+−6

Combine Like Terms:

=5x+x2+−4+−4x+x2+−6

=(x2+x2)+(5x+−4x)+(−4+−6)

=2x2+x+−10

ez copy pasta

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Answer:

4x + 20 - 5 = 0 \\ 4x + 15  = 0 \\ 4x =  - 15 \\ x = -   \frac{15}{4}

Step-by-step explanation:

8x + 18 = 0 \\ 8x =  - 18 \\ x =  -  \frac{18}{8}  \\ x =  -  \frac{9}{4}

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A rare form of malignant tumor occurs in 11 children in a​ million, so its probability is 0.000011. Four cases of this tumor occ
Shkiper50 [21]

Answer:

a) The mean number of cases is 0.14608 cases.

b) The probability that the number of cases is exactly 0 or 1 is 0.990.

c) The probability of more than one case is 0.010

d) No, because the probability of more than one case is very small

Step-by-step explanation:

We can model this problem with a Poisson distribution, with parameter:

\lambda=r*t=0.000011*13,280=0.14608

a) The mean amount of cases is equal to the parameter λ=0.14608.

b) The probability of having 0 or 1 cases is:

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c) The probability of more than one case is:

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