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3 years ago

88.4×10^3 in standard notation

Mathematics

1 answer:

scoray [572]3 years ago

8 0

88.4*10^3 is = 88.4*10*10*10 =88400

Hope this helps! Any questions please just ask! Thank you!

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A student got 22 out of 25 questions correctly, shade the model to help write the decimal that repersents the fraction of correc

IrinaK [193]

Answer:

25 = 23

100 = X

Cross multiply and you will have:

25x = 2300

Step-by-step explanation:

5 0

3 years ago

Which sequence of transformations could have been used to transform triangle ABC to produce triangle A"B"C"?

Andreyy89

The sequence of transformations that could have been used to transform triangle ABC to produce triangle A"B"C" is B.Triangle ABC was reflected across the y-axis and then translated 7 units down.

6 0

4 years ago

The Pew Research Center finds that the demographic make-up of political parties is changing drastically through the election cyc

patriot [66]

Answer:

(a)0.34

(b)0.5

(d)0.544

(e)0.655

(f)Not disjoint events

(g)Independent events

Step-by-step explanation:

The summary of education levels among party lines is given in the table below

$\left|\begin{array}{c|ccc}&$Democrat &$Republican &$Total\\--&--&--&--\\$College Degree &37 &31 &68\\$No College Degree& 63 &69 &132\\--&--&--&--\\$Total &100 &100& 200\end{array}\right|$

(a)Probability a randomly selected participant has a college degree.

The probability a randomly selected participant has a college degree is:

$=\dfrac{68}{200} =0.34$

(b)The probability that a randomly selected participant is a democrat.

$=\dfrac{100}{200} =0.5$

(c)The probability that a randomly selected participant is a democrat and has a college degree.

$=\dfrac{37}{200} =0.185$

(d)Probability of being a democrat given that the participant has a college degree.

$=\dfrac{37}{68} \approx 0.544$

(e)The probability of begin a democrat or having a college degree

Number of Democrats =100

Number of Those with College degrees = 68

Number of democrats with College degrees =37

Therefore:

Probability of begin a democrat or having a college degree

$=\dfrac{100+68-37}{200} \\=\dfrac{131}{200}\\\\=0.655$

(f)The event of having a college degree and being a democrat are not disjoint events as there are some democrats who have a college degree.

(g)The event of having a college degree and being a democrat are independent events as the outcome of one does not affect the other.

6 0

4 years ago

It is believed that the average starting salary for a 21-25 year old college grad exceeds $52,000 per year. Hence, it is desired

gregori [183]

Answer:

The significance level α is 0.02.

Step-by-step explanation:

A hypothesis test for single mean can be performed to determine whether the average starting salary for a 21-25 year old college grad exceeds $52,000 per year.

The hypothesis is defined as follows:

H₀: The average starting salary for a 21-25 year old college grad does not exceeds $52,000 per year, i.e. µ ≤ 52,000.

Hₐ: The average starting salary for a 21-25 year old college grad exceeds $52,000 per year, i.e. µ > 52,000.

The information provided is:

σ = $5,745

n = 65

Also, if $\bar X>\$53,460$ then the null hypothesis will be rejected.