Ask question

Ask question

All categories

3 years ago

12

a marble bag contains three red marbles and four gray marbles six white marbles and five black marbles what is the probability o

f randomly drawing a red marble and then a gray marble if the first marbel is replaced

1 answer:

Andrews [41]3 years ago

3 0

Answer:

1/27

Step-by-step explanation:

do good!

You might be interested in

Brian pays £275.23 a year on his car insurance.

Roman55 [17]

Hope this helps!!!!!!!!!!

5 0

2 years ago

"What is the name of the relationship between angle 1, and angle 4?

zvonat [6]

1 and 4,2 and 3 are the alternate interior angles

7 0

3 years ago

Read 2 more answers

Given mZ1= x° and m Z2 = (x +50)".

Tju [1.3M]

Given:

m∠1= x° and m∠2 = (x +50)°.

To find:

The value of x, m∠1 and m∠2.

Solution:

From the figure it is clear that, transversal side intersect the opposite sides which are parallel and form ∠1 and ∠2.

Sum of same sided interior angles is 180 degrees. So,

$m\angle 1+m\angle 2=180^\circ$

$x^\circ+(x+50)^\circ=180^\circ$

$2x^\circ+50^\circ=180^\circ$

$2x^\circ=180^\circ-50^\circ$

$2x^\circ=130^\circ$

Divide both sides by 2.

$x^\circ=65^\circ$

$x=65$

Now,

$m\angle 1=65^\circ$

$m\angle 2=(65+50)^\circ=115^\circ$

Therefore, the correct option is C.

5 0

3 years ago

Seventy percent of children who go to the doctor have fevers. Of those with fevers, 30% also have a rash. Of those without fever

Allisa [31]

Answer:

The probability that a child with a rash does not have a fever is 22%

Step-by-step explanation:

1. Probability of having fever:

$P(fever)=0.70$

2. Probability of not having fever:

$P(not fever)=1-P(fever)\\P(not fever)=1-0.70\\P(not fever)=0.30$

3. Probability of fave fevers and a rash:

$P(fever and rash)=(0.70)(0.30)=0.21$

4. Probability of having a rash but not a fever:

$P(rash and not fever)=(0.30)(0.20)=0.60$

5. Probability of having a rash:

$P(rash)=P(rash and fever)+P(rash and no fever)\\P(rash)=0.21+0.06=0.27$

6. Probability a child with a rash does not have a fever

$P=\frac{P(rash and not fever)}{P(rash)} =\frac{0.06}{0.27} =0.22$

22% of the child at the doctor's office with a rash does not have a fever.

5 0

3 years ago

Find the area of the figure.<br><br>7cm<br><br>8cm<br><br>11cm<br><br><br>Area is ___ square cm?

Vlad [161]

Answer:

616cm³

Step-by-step explanation:

you just need to multiply those numbers

7 x 8 x 11= 616

6 0

2 years ago

Read 2 more answers