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Ann [662]
3 years ago
6

Sxyz + 10x2y + 15 x y z²​

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
8 0
I can answer it but is the “S” supposed to be an integral?
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Provide an appropriate response. In order to efficiently bid on a contract, a contractor wants to be 95% confident that his erro
lidiya [134]

Answer:

d. 20

Step-by-step explanation:

Standard deviation is 4.5

Margin error for the problem is 2 hours

Probability 95%, that means that the siginficance level α is 1 – p

α = 1 – 0.95 = 0.05

margin of error (ME) can be defined as follows

ME = Z(α/2) * standard deviation/ √n

Where n is the sample size

Z(0.05/2) = Z(0.025)

Using a z table Z = 1.96

Now, replacing in the equation and find n

2 = 1.96 * 4.5/ √n

2 = 8.82/√n

√n = 8.82/2

√n = 4.41

n = 4.41^2

n = 19.44 ≈ 20

5 0
3 years ago
How can you use mental math to multiply numbers by 10?
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Answer:

add a zero at the end of the number. 5x10=50. 60x10=600. 700x10=7000 etc.

Step-by-step explanation:

3 0
3 years ago
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Given that the graph below is a transformation of the graph f(x)=x2, which transformation occurred?
Sindrei [870]

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whats?

Step-by-step explanation:

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Two angles are complementary if the sum of their measures is 90°. Find two complementary angles such that one of the angles is 1
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Bro that's a lot, i don't know what the heck you are talking about.
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3 years ago
-6+7x =-2x+57 What is this?​
crimeas [40]

Answer:

x = 7

Step-by-step explanation:

-6+7x = -2x+57

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× = 7

8 0
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