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Maru [420]
1 year ago
14

In the figure at the right DC = 20 cm and AB =36 cm . what is FE? a.16cm b.56cm c.28cm d.46cm​

Mathematics
2 answers:
puteri [66]1 year ago
6 0

Answer:

however dc =20 cm is

Step-by-step explanation:

so this isnt contrary to 50

Anit [1.1K]1 year ago
6 0

Answer:

If it's all about trapezoid and FE is the median:

SOLUTION:

m = \frac{1}{2}

2

1

[(20) + (38)]

m = \frac{1}{2}

2

1

(58)

m = \frac{58}{2}

2

58

m = 26

ANSWER: 26 cm

Step-by-step explanation:

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A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use 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.

In this question, we have that:

\mu = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

This is X when Z has a pvalue of 0.025, so X when Z = -1.96.

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

-1.96 = \frac{X - 65}{8.2}

X - 65 = -1.96*8.2

X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
Read 2 more answers
What is the y-intercept of the line shown?
lys-0071 [83]
Simple.....

always remember the y-intercept is where your line hits the y-axis... or where it hits the vertical axis...

As we can see this line hits the y-axis at (0,3)-->> y-intercept=3

Thus, your answer.
6 0
3 years ago
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The rabbit population of Springfield, Ohio was 144,000 in 2016. It is expected to decrease by about 7.2% per year. Write an expo
xeze [42]
<h2>Hello!</h2>

The answer is:

In 2036 there will be a population of 32309 rabbits.

<h2>Why?</h2>

We can calculate the exponential decay using the following function:

P(t)=StartAmount*(1-\frac{percent}{100})^{t}

Where,

Start Amount, is the starting value or amount.

Percent, is the decay rate.

t, is the time elapsed.

We are given:

StartAmount=144,000\\x=7.2(percent)\\t=2036-2016=20years

Now, substituting it into the equation, we have:

P(t)=StartAmount(1-\frac{percent}{100})^{t}

P(t)=144000*(1-\frac{7.2}{100})^{20}

P(t)=144000*(1-0.072)^{20}

P(t)=144000*(0.928)^{20}

P(t)=144000*(0.928)^{20}

P(t)=144000*0.861=32308.888=32309

Hence, we have that in 2036 the population of rabbis will be 32309 rabbits.

Have a nice day!

5 0
2 years ago
Evaluate the radical. 125−−−√3 Enter your answer in the box.
Ray Of Light [21]
The answer should be 5.
5 0
2 years ago
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The velocity-time graph for a cycle is shown
malfutka [58]

Answer:

<u>a) 100m</u>

<u>b) 2m/s</u>

Step-by-step explanation:

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b)==>> Variable "a" = change OVER time (\frac{change}{time}) = 8m/4s = 2m/s

5 0
2 years ago
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