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Mkey [24]
2 years ago
7

the fastest elevators in the burn khalifa can travel 330 ft in just 10 seconds how far just elevator travel in one second​

Mathematics
2 answers:
ycow [4]2 years ago
5 0

Answer:

33ft/sec

Step-by-step explanation:

Divide the distance by time to find speed:

330ft / 10 sec = 33ft/sec

Elden [556K]2 years ago
5 0

Answer:

33ft

Step-by-step explanation:

Just divide 330 by 10

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in 1991, a gallup poll reported this percent to be 79%. using the data from this poll, test the claim that the percent of driver
snow_lady [41]

We reject our null hypothesis, H₀, at a level of significance of =0.01 since the P-value is less than that threshold. There is compelling statistical data to indicate that since 1991, the proportion of drivers who love driving has decreased.

Given,

The Pew Research Center recently polled n=1048 U.S. drivers and found that 69% enjoyed driving their automobiles.

In 1991, a Gallup poll reported this percentage to be 79%. using the data from this poll, test the claim that the percentage of drivers who enjoy driving their cars has declined since 1991.

To report the large-sample z statistic and its p-value,

Null hypothesis,

H₀ : p = 0.79

Alternative hypothesis,

Ha : p < 0.79

Level of significance, α = 0.01

Under H₀

Test statistic,

Z_0= \frac{\hat p - p}{\sqrt{\frac{p(1-p)}{n} }  }

Z₀ = -7.948

The alternative hypothesis(Ha) is left-tailed, so the P-value of the test is given by

P-value = P(z <-7.945)

            = 0.000     (from z-table)

Since the P-value is smaller than given level of significance, α=0.01 we reject our null hypothesis, H₀, at α=0.0.1 level Strong statistical evidence to conclude that the percentage of drivers who enjoy driving their cars has declined since 1991.

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5 0
1 year ago
Solve the system by substitution.
kirill [66]
<h2>Answer:</h2>

x = 1

y = 1

<h3>Step-by-step explanation:</h3>

y=-3x+4\\ y=x

Substitute into one of the equations

-3x+4=x

Rearrange variables to the left sider of the equation

-3x-x=-4

Combine like terms

-4x=-4

Divide both sides of the equation by the coefficient of variable

x=\frac{-4}{-4}

Determine the sign for multiplication or division

x=\frac{4}{4}

Cross out the common factor

x=1

Substitute into one of the equations

y=1

The solution of the system is

\left \{ {{x=1} \atop {y=1}} \right.

<em>I hope this helps you</em>

<em>:)</em>

8 0
2 years ago
What is the slop of line n
enyata [817]

Answer:

For line n, m=1/2

Step-by-step explanation:

The line goes up 1 for every 2 to the right.

8 0
2 years ago
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How to solve for y 3y=2x+15
SVEN [57.7K]

Answer:

y = (2x + 15)/3

Step-by-step explanation:

3y = 2x + 15

Divide both sides by 3,

3y/3 = 2x/3 + 15/3

Simplify,

y = (2x + 15)/3

8 0
2 years ago
What’s the correct answer for this question?
irakobra [83]

Answer:

B.

Step-by-step explanation:

Volume of fudge cubes = 1 ×1×1

= 1 inch³

The cylinder contains 12.6 fudge cubes

So,

Volume of cylinder = 12.6 inches³

Height of cylinder = 1 inch

Base area of cylinder = Volume / Height

= 12.6 / 1

= 12.6 inches²

3 0
3 years ago
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