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3 years ago

7

The temperature on Monday was -3 degrees Fahrenheit. By Wednesday the temperature was 16 degrees Fahrenheit. What is the differe

nce in temperature from Monday to Wednesday?

1 answer:

Alexeev081 [22]3 years ago

4 0

The temperature went from -3 to 16. The difference between the two numbers (16- -3) = 19 degrees Fahrenheit.

I hope this helps!

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Jacques deposited $1900 into an account that earns 4% interest. After t year, jaques has $3875.79in the account. How long was th

Sladkaya [172]

Deposit = $1900
Amount After interest = $3875.79
% interest = 4%
Interest = 1975.79

Time For Interest Period

4/100 × 1900 × t = 1975.79
76 t = 1975.79
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Answer = 26years

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3 years ago

4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are

Elina [12.6K]

Using the hypergeometric distribution, it is found that there is a 0.7568 = 75.68% probability that neither can wiggle his or her ears.

The people are chosen from the sample without replacement, which is why the <u>hypergeometric distribution</u> is used to solve this question.

Hypergeometric distribution:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.
N is the size of the population.
n is the size of the sample.
k is the total number of desired outcomes.

In this problem:

1000 people means that $N = 1000$
130 can wiggle their ears, thus $k = 130$
Two are selected, thus $n = 2$ .

The probability that neither can wiggle his or her ears is P(X = 0), thus:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}$

$P(X = x) = h(0,1000,2,130) = \frac{C_{130,0}C_{870,2}}{C_{1000,2}} = 0.7568$

0.7568 = 75.68% probability that neither can wiggle his or her ears.

A similar problem is given at brainly.com/question/24826394

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2 years ago

What is the period of the graph?

beks73 [17]

Answer:

3 pi.

Step-by-step explanation:

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3 years ago

Marie is bringing bagels and cream cheese to school as a birthday snack for her class. The cost of b bagels and c packages of cr

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Answer:

$30.50

Step-by-step explanation:

b = bagels

c = cream cheese

<u>Given</u>

b = 30

c = 2

<u>Work:</u>

0.85b+2.5c

0.85(30) + 2.5(2)

25.5 + 5

30.5

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3 years ago

What is the maximum height of of Anna's golf ball? The equation is y=x−0.04x2.

elena-s [515]

Given:

The height of a golf ball is represented by the equation:

$y=x-0.04x^2$

To find:

The maximum height of of Anna's golf ball.

Solution:

We have,

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Differentiate with respect to x.

$y'=1-0.04(2x)$

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For critical values, $y'=0$ .

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Since double derivative is negative, the function is maximum at $x=12.5$ .

Substitute $x=12.5$ in the given equation to get the maximum height.

$y=(12.5)-0.04(12.5)^2$

$y=12.5-0.04(156.25)$

$y=12.5-6.25$

$y=6.25$

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3 years ago