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elena-14-01-66 [18.8K]
3 years ago
15

Combine like terms. 3y+3y+5+7x^3-y-6-7x^3

Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0

Answer:

5y - 1

completely simplified

guapka [62]3 years ago
3 0

Answer:

5y-1

Step-by-step explanation:

3y+3y+5+7x^3-y-6-7x^3

3y+3y-y= 5y

7x^3-7x^3 cancel each other out

5-6= -1

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Rebecca already knew 1 appetizer recipe before starting culinary school, and she will learn 3
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Answer:

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Step-by-step explanation:

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2 years ago
How to find lateral surface
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3 years ago
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3 years ago
When obtaining a confidence interval for a population mean in the case of a finite population of size N and a sample size n whic
Elanso [62]

Answer:

95% Confidence interval for the mean

142.8 \leq\mu\leq158.4

Step-by-step explanation:

We have to calculate a 95% confidence interval for the mean of a finite population.

The error is multiplied by the following finite population correction factor:

cf=\sqrt{\frac{N-n}{N-1} }

The standard deviation can be estimated as

\sigma=\frac{s}{\sqrt{n}} \sqrt{\frac{N-n}{N-1} } =\frac{24.4}{\sqrt{32} }* \sqrt{\frac{200-32}{200-1} }=3.963

The 95% confidence interval has a z value of 1.96, so it becomes:

M-z*\sigma_c\leq\mu\leq M+z*\sigma_c\\\\150.6-1.96*3.963\leq\mu\leq 150.6+1.96*3.963\\\\ 142.8 \leq\mu\leq 158.4

5 0
3 years ago
Let u = <3, -1>, v = <-6, -6>. Find 9u + 2v.
Gnom [1K]
9u means you're multiplying 9 into that vector, both components.  Same with the 2v.  9*3 = 27 and 9*-1 = -9, so your new vector u is <27, -9>.  Now let's do v.  2* -6 (twice) = -12, so your new v vector is <-12, -12>.  Add those together now, first components of each and second components of each.  27 + (-12) = 15; -9+(-12)=-21.  So the addition of those gives us a final vector with a displacement of <15, -21>
5 0
3 years ago
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