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Wittaler [7]
3 years ago
12

First year of high school heh need a little help​

Mathematics
1 answer:
Luba_88 [7]3 years ago
7 0

Answer:

(12 + 3x)x

Step-by-step explanation:

(12 + 3)x = 12x + 3x = 15x

(12 + 3x)x = 12x + 3x²

15x

12x + 3x = 15x

They all equal 15x except for (12 + 3x)x

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Step-by-step explanation:

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2. Company A packages roofing nails in boxes that are normally distributed with a mean of 276 nails and a standard deviation of
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Answer:

Company B

Step-by-step explanation:

We would use z score formula

z = (x - μ) / σ

x = raw score

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let x = 260 with the mean μ1 = 276 and standard deviation σ = 5.8

let x = 260 with the mean μ2 = 252 and standard deviation σ = 3.4

z1 = (x- μ1) / σ = (260- 276) / 5.8 = -2.7586206897 = -2.76

z2 = (x2 - μ) / σ = (260 -252) / 3.4= 2.3529411765 = 2.35

Comparing the two z scores, we can see that company B has the probability of producing 260 nails because it has a z score of 2.35 compared to company A with a z score of -2.76.

6 0
2 years ago
The fish population in a local stream is decreasing at a rate of 5% per year. The original population was 75,000 fish. What is t
ZanzabumX [31]

Answer:

52,375

Step-by-step explanation:

that is what i got

4 0
3 years ago
Write the following number in decimal notation. Three thousand five hundred and seven hundredths
viktelen [127]
3500.07

I hope this helps!
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If the​ principal, interest​ rate, or time in a simple interest problem is​ doubled, and the other two quantities remain​ consta
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