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professor190 [17]

3 years ago

12

Aneesha travels at a rate of 50 miles per hour. Morris is traveling 3 feet per second less than aneesha.which is the best estima

te of the speed Morris is traveling? 1mile=5,280

1 answer:

jolli1 [7]3 years ago

6 0

48 miles per hour is the answer

I found the answer here: https://quizlet.com/98729059/math-dimensional-analysis-flash-cards/

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Angle A is circumscribed about circle O.<br> What is the measure of D?

Mariana [72]

Answer:

m<D=50

Step-by-step explanation:

The reason is that ABOC is a quadrilateral, so its angle add up to 360*. Each of the tangent angles, <ABO and <ACO, has a measure of 90*.

m<ABO + m<ACO + m<A + m<O = 360

90 + 90 + m<A + m<O = 360

m<A + m<O = 180

80 + m<O =180

m<O = 100

If the measure of central angle <O is 100*, what is the measure of inscribed <D?

The measure of a central angle is equal to the measure of the arc it intercepts. If m<O = 100*, then m BC = 100.

The measure of an inscribed angle is half of the measure of the arc it intercepts. If m BC = 100*, then m<D = 50

m<D=50

7 0

3 years ago

The lengths of lumber a machine cuts are normally distributed with a mean of 100 inches and a standard deviation of 0.3 inch. (

ki77a [65]

Answer:

a) 0.345

b) 0.005

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 0.3

We are given that the distribution of lengths of lumber is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(length greater than 100.12 inches)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.3}) = P(z > 0.4)$

$= 1 - P(z \leq 0.4)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.655 = 0.345 = 34.5\%$

b) Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{0.3}{\sqrt{41}} = 0.0468$

P(length greater than 100.12 inches for the sample)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.0468}) = P(z > 2.564)$

$= 1 - P(z \leq 2.564)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.995 = 0.005$

8 0

4 years ago

Find the vertex of f(x) = 12 - 41 +3

timofeeve [1]

-26 is the answer :)

6 0

3 years ago

A map of Texas shows the scale to be 1in per 80 miles. The distance between Austin and Corpus Christi is 232 miles. How many inc

umka21 [38]

The two cities will be 2.9 inches apart on the map.

Step-by-step explanation:

Given scale of map is;

1 inch = 80 miles

Ratio of inch to miles = 1:80

Actual distance between Austin and Corpus = 232 miles

Let,

x be the distance between Austin and Corpus on map.

Ratio of inch to miles = x:232

Using proportion;

Scale ratio :: Actual ratio

$1:80::x:232\\$

Product of mean = Product of extreme

$80*x=232*1\\80x=232\\$

Dividing both sides by 80

$\frac{80x}{80}=\frac{232}{80}\\x=2.9$

The two cities will be 2.9 inches apart on the map.

Keywords: ratio, proportion

Learn more about ratio at:

#LearnwithBrainly

7 0

3 years ago

What are the domain and range of g of x equals negative 3 times the square root of the quantity x minus 1? d: (1, [infinity]) an

leonid [27]

The domain of it is d: [1,+infinity) and the range is r: (-infinity,0].

3 0

2 years ago