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4 years ago

Helppppp me answer this plz

Mathematics

2 answers:

Zarrin [17]4 years ago

4 0

Answer:

Green: 50%

Purple: 25%

Black: 25%

Step-by-step explanation:

Well, the circle has 4 equal sections.

2 are green

1 is purple

1 is black

To find the probability of the spinner landing on each section we make a fraction.

Green)

2/4 simplified,

1/2, as a percent is 50%

Purple)

1/4,

1 divided by 4 = .25

To make that into a percent we move the decimal 2 places to the right -> 25%

Black)

1/4

1 divided by 4 = .25 as a percent 25%

VLD [36.1K]4 years ago

4 0

The answer is the last choice. This is because as you can see the green part takes up already heaps of the circle meaning that it is 50%. So then the purple takes up 25 percent of it and the black also takes up 25 percent of it since the purpose is 1/4 of the circle and so is the black. I hope this helps.

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Plz help i will report if your not trying to answer

MArishka [77]

First one is number 3

Second one is number 2

6 0

3 years ago

Read 2 more answers

Suppose the average yearly salary of an individual whose final degree is master's is $40 thousand less than twice that of an ind

Lostsunrise [7]

Answer:

<h2>x=50000 dollars ( the average salary of bachelor degree)</h2><h2>the average salary of Masters degree = 2x-40000</h2><h2>2(50000)-40000=60000 dollars</h2><h2></h2><h2>step by step explanation :</h2>

let x be the salary of individual with bachelor degree

Then the average salary of individual with Masters degree is:

(2x-40000)

the combined of two salaries is 110000:

x+(2x-40000)=110000

3x-40000=110000

3x=110000+40000

x=150000/3

<h2>x=50000 dollars ( the average salary of bachelor degree)</h2><h2>the average salary of Masters degree = 2x-40000</h2><h2>2(50000)-40000=60000 dollars</h2>

7 0

3 years ago

The table below represents the distance of an airplane from its destination as a function of time:

Jlenok [28]

$\bf \begin{array}{ccllll}
time(hours)&distance(miles)\\
-----&-------\\
0&2700\\
1&2160\\
2&1620\\
3&1080\\
4&540
\end{array}$

part A)

y-intercept is when the graph "intercepts" or touches the y-axis, and when that happens, x = 0, on that table, is the very first row, 0, 2700.

what does that mean? well, at 0 hours, the plane was 2700 miles away.
or another way to put it, the plane was still on the runway at the airport and hadn't taken off at 0 hours, and the airport where it was is 2700 miles away from its destination.

part B)

from the table, we can see the x = 1, y = 2160, and when x = 4, y = 540,
so our two points are (1, 2160) and (4, 540).

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 1}}\quad ,&{{ 2160}})\quad 
% (c,d)
&({{ 4}}\quad ,&{{ 540}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{540-2160}{4-1}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}
\\\\\\
\cfrac{-1620}{3}\implies \boxed{-540}$

or -540/1, well the top is the rise(miles) and the bottom is the run(hours)... so it means -540 miles per each 1hour,
or
for every passing hour the plane is travelling, the distance from its origin and its destination is shrinking, namely, is getting closer to its destination.

part C)

well, we know for every hour is dropping by 540, so, 4hrs is 540, so 5hours it will drop another 540, or 540 - 540 = 0

so, the domain will be [0, 5], since after 5hours it'd be at its destination, because at 5hrs the miles away is 0, meaning it arrived at the destination.

6 0

3 years ago

Read 2 more answers

2/5x + 4 = 1/4x. Find x

irina1246 [14]

Answer:

Solve for x by simplifying both sides of the equation, then isolating the variable.

Exact Form:

x = − 80 /3

Decimal Form:

x = − 26. ¯

Mixed Number Form:

x = − 26 2

----

4 0

3 years ago

Suppose you observe a data point x = 12 and it is known that this data point came from a normal distribution with mean 5 and sta

mihalych1998 [28]

Answer:

The observation would be considered unusual because it is farther than three standard deviations from the mean.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When Z has an absolute value higher than 2, the observation is considered unusual.

In this problem, we have that:

$\mu = 5, \sigma = 2, X = 12$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{12 - 5}{2}$

$Z = 3.5$

So the correct answer is:

The observation would be considered unusual because it is farther than three standard deviations from the mean.

3 0

4 years ago