Ask question

Ask question

All categories

3 years ago

12

There are 25 students in Mr. Detwikers 1st period class. If 76% of these students complete their homework last night. How many s

tudents did their homework?

1 answer:

Dafna1 [17]3 years ago

6 0

19 students did their hw

You might be interested in

What is the value of x in the solution of the system of equations below?<br>8x-y=20<br>Y=3x

tatyana61 [14]

Answer:

x=4

where y =3x

8x-3x=20

5x=20

5x/5=20/5

x=4

4 0

3 years ago

Read 2 more answers

Which system of equations is represented by the graph?

valentina_108 [34]

I believe the answer is D

4 0

3 years ago

The probability that Chloe acts hungry at 7pm given that she has already eaten dinner is 0.5. The probability that Chloe acts hu

kolezko [41]

Answer:

a) P( $Y^{C}$ | X ) = 0.180

b) P(Y | $X^{C}$ ) = 0.998

Step-by-step explanation:

Let

P(X) - Probability that he acts hungry

P(Y) - Probability that he had ate dinner,

Given,

P(X | Y) = 0.5

P(X | $Y^{C}$ ) = 0.99

P(Y) = 0.9

a.)

P( $Y^{C}$ | X ) = $\frac{P( X | Y^{C} ). P(Y^{C} ) }{P( X | Y^{C} ). P(Y^{C} ) + P( X | Y ) . P (Y) }$

= $\frac{(0.99)(0.1)}{(0.99)(0.1) + (0.5)(0.9)} = \frac{0.099}{0.549}$ = 0.180

⇒P( $Y^{C}$ | X ) = 0.180

b.)

P(Y | $X^{C}$ ) = $\frac{(1 - P(X | Y ) ) . P(Y)}{P( X^{C} ) } = \frac{(1 - P(X | Y ) ) . P(Y)}{ 1 - P( X ) }$

= $\frac{(1 - 0.5)(0.9)}{1 - [(0.99)(0.1) + (0.5)(0.9) ]} = \frac{(0.5)(0.9)}{1 - [(0.099) + (0.45) ]} = \frac{0.45}{1 - [0.540]} = \frac{0.45}{0.451}$ = 0.998

⇒P(Y | $X^{C}$ ) = 0.998

3 0

3 years ago

Six less than four times a number is 26. What is the number?

statuscvo [17]

Okay, lets see here. So since we know that 26 is six less than the actual answer, we'll add 6 to 26 which gives us 32. Then we'll do 32 divided by 4, which is 8.

5 0

3 years ago

Read 2 more answers

The radius of a circle is 16 millimeters. What is the circle's area?

Kisachek [45]

Answer:

803.84 millimeters²

Step-by-step explanation:

How do we find the area of a circle?

The area of a circle is πr², where r = radius. In this case, we have to approximate pi to 3.14.

<u>Solving</u>

<u></u> $3.14 *16^2$
$3.14*256$
$803.84$

Therefore, the area is 803.84 square millimeters.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

3 0

2 years ago

Read 2 more answers