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3 years ago

Can anyone help with this?

Mathematics

1 answer:

scZoUnD [109]3 years ago

3 0

203/3.5=58mi/h
243/4.5=54mi/h
(58+54)/2=56mi/h
The answer in 56mi/h

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Answer:

2 is added

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Angles 1 and 2 are complementary. If Angle 1 measures 29.6º, then what is the measure of Angle 2? º

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60.4 degrees

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For all real numbers b and c such that the product of

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3 years ago

In a metal fabrication process, metal rods are produced to a specified target length of 15 feet. Suppose that the lengths are n

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Answer:

95% Confidence interval: (14.4537 ,15.1463)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 15 feet

Sample mean, $\bar{x}$ = 14.8 feet

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, σ = 0.65 feet

Degree of freedom = n - 1 = 15

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 15 and}~\alpha_{0.05} = \pm 2.1314$

$14.8 \pm 2.1314(\dfrac{0.65}{\sqrt{16}} ) \\\\= 14.8 \pm 0.3463 = (14.4537 ,15.1463)$

is the required confidence interval for the true mean length of rods.

3 0

3 years ago

Read 2 more answers

Choose which one you believe doesn't belong.

vodka [1.7K]

Answer:

All the other numbers if you add up their digits it is 8.

1 + 7 = 8

2 + 6 = 8

4 + 4 = 8

6 + 5 = 11

Is only number divisible by 13.

44 is only divisible by 11

Step-by-step explanation:

3 0

3 years ago