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Aleonysh [2.5K]
3 years ago
13

The altitude of a plane is 1,600 ft. What must be the altitude of a submarine so that the sum of their altitudes is 0?

Mathematics
2 answers:
RSB [31]3 years ago
7 0
You must mean the depth of the submarine.

to make  sum = zero the depth of the sub must be -1600 ft..
Vlada [557]3 years ago
5 0

1600 - 1600 = 0

 so the sub needs to be -1600 feet

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It is an infinite number of solutions. To put it simply, is x = 1, y would equal 4.you can do this with every single number.
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How do i write a number in standerd form
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A toy manufacturer wants to know how many new toys children buy each year. A sample of 601 children was taken to study their pur
Lilit [14]

Answer:

The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

Standard deviation σ = 1.5

The z-score for a 95% confidence interval is 1.96.

The limits of the confidence interval can be calculated as

X \pm z*\frac{\sigma}{\sqrt{n}}\\\\LL=X-z*\frac{\sigma}{\sqrt{n}}=6.7-1.96*\frac{1.5}{\sqrt{601} } =6.7-0.1199=6.6\\\\UL=X+z*\frac{\sigma}{\sqrt{n}}=6.7+1.96*\frac{1.5}{\sqrt{601} } =6.7+0.1199=6.8

The confidence interval is 6.6<μ<6.8.

7 0
3 years ago
Express y in terms of x in the equation ax + by = c where b ≠ 0.
marissa [1.9K]

The equation of y in terms of x is  y =(c/b) - (a/b)x

<h3>What is an Equation ?</h3>

An Equation is a mathematical statement formed when two algebraic expressions are equated with an equal sign.

The equation given in the question is

ax + by = c  ,  b ≠ 0.

Express y in terms of x in the equation

by = c - ax

y = (c/b) - (a/b)x

Therefore the equation of y in terms of x is  y =(c/b) - (a/b)x

To know more about Equation

brainly.com/question/10413253

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8 0
2 years ago
A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 80% confidence inter
jasenka [17]

Answer:

The 80% confidence interval for the mean

(4.6199 , 4.7801)

Step-by-step explanation:

<u>Explanation</u>:-

Assuming that the population standard deviation for the number of energy drinks consumed each week is 1

Given the Population standard deviation 'σ' = 1

The study found that for a sample of 256 teenagers the mean number of energy drinks consumed per week is 4.7

given sample size 'n' = 256

mean of the sample 'x⁻' = 4.7

<u>confidence interval for the mean</u>

The 80% confidence interval for the mean is determined by

(x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} + Z_{\alpha }\frac{S.D}{\sqrt{n} } )

the z-score of 80% level of significance = 1.282

(4.7 - 1.282\frac{1}{\sqrt{256} } , 4.7 + 1.282\frac{1}{\sqrt{256} } )

(4.7 - 0.0801 , 4.7 +0.0801)

(4.6199 , 4.7801)

<u>Conclusion</u>:-

The 80% confidence interval for the mean

(4.6199 , 4.7801)

7 0
3 years ago
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