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ahrayia [7]
3 years ago
12

Factor 9x^+12x-16 , sincerely appreciate all the help I can receive.

Mathematics
1 answer:
zheka24 [161]3 years ago
5 0
The correct answer is:  [C]:  " -4 (-2x² - 3x + 4) " .
______________________________________________________
Explanation:
______________________________________________________

8x² + 12x - 16 ;  factors into:

-4 (-2x² - 3x + 4) ; which is:  Answer choice:  [C].
______________________________________________________
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According to an article in Newsweek, the rate of water pollution in China is more than twice that measured in the US and more th
jeyben [28]

Answer:

(a) 0.119

(b) 0.1699

Solution:

As per the question:

Mean of the emission, \mu = 11.7 million ponds/day

Standard deviation, \sigma = 2.8 million ponds/day

Now,

(a) The probability for the water pollution to be at least 15 million pounds/day:

P(X\geq 15) = P(\frac{X - /mu}{\sigma} \geq \frac{15 - 11.7}{2.8})

P(X\geq 15) = P(Z \geq 1.178)

P(X\geq 15) = 1 - P(Z < 1.178)

Using the Z score table:

P(X\geq 15) = 1 - 0.881 = 0.119

The required probability is 0.119

(b) The probability when the water pollution is in between 6.2 and 9.3 million pounds/day:

P(6.2 < X < 9.3) = P(\frac{6.2 - 11.7}{2.8} < \frac{X - \mu}{\sigma} < \frac{9.3 - 11.7}{2.8})

P(6.2 < X < 9.3) = P(- 1.96 < Z < - 0.86)

P(6.2 < X < 9.3) = P(- 1.96 < Z < - 0.86)

P(Z < - 0.86) - P(Z < - 1.96)

Now, using teh Z score table:

0.1949 - 0.025 = 0.1699

4 0
3 years ago
The sum of the measures of 2 angles is 90o. Angle C is 34o. Angle G is (3x-4)o. What is the value of x?
iragen [17]

Answer:

d if "in2" means /2

Step-by-step explanation:

3x-4<u>=</u><u>9</u><u>0</u><u>-</u><u>3</u><u>4</u>

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2 years ago
Ada is showing her work in simplifying (5.9 - 1.8) - 6.2 + 4.1. In which step did Ada make an error? (5 points)
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Answer:

Step 4 is where she made the error.

Step-by-step explanation:

This step is actually known as the commutative property. That property states that we can change the order of numbers as long as we keep the signs and it maintains it's validity.

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2 years ago
What is 44.6825 rounded to the nearest hundredth
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Answer:

44.68

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

44.6825 rounded to the nearest hundredths place is 44.68

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A urn contains 3 red and 5 black balls. Tom first withdraws a ball from the urn and Mary withdraws a ball from the urn without r
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Answer:

The answer is B

Step-by-step explanation:

I learned this from my math teacher

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