All categories

3 years ago

"What is the probability that the first two cards drawn from a deck will be red? (With replacement)"?

Mathematics

1 answer:

Novay_Z [31]3 years ago

3 0

26/52 times 26/52

Which is equivalent to 1/2 times 1/2

Which equals 1/4. Or 25%. Or 1:4. However you prefer

You might be interested in

How is 0.9999 Equal to 1 again?

DochEvi [55]

It’s not exactly equal to one, but in many cases in math they ask for a rounded answer.

3 0

3 years ago

Noah tried to prove that cos(θ)=sin(θ) using the following diagram. His proof is not correct.

alukav5142 [94]

Answer:

The first statement is incorrect. They have to be complementary.

Step-by-step explanation:

You can't say the measure of angle B is congruent to theta because it is possible for angles in a right triangle to be different.

You can only say that what he said is true if the angle was 45 degrees, but based on the information provided it is not possible to figure that out.

The other two angles other than the right angle in a right triangle have to add up to 90 degrees, which is the definition of what it means for two angles to be complementary. A is the correct answer.

3 0

3 years ago

Read 2 more answers

What is -5 2/3 divided by -3?

sweet [91]

The answer to this question is 1.88888888889 or rounded to 2.0

6 0

3 years ago

I need help with this question i dont understand it

RUDIKE [14]

The perimeter, by definition, is the outside measure of that figure. MN and LM are the same length and LK and NK are the same length....we just need to find the lengths! Use the distance formula to find the distance between the 2 points:
$\sqrt{( x_{2} - x_{1} ) ^{2} +( y_{2}- y_{1} ) ^{2} }$
For the segment MN, use the coordinates of M as your x1, y1, and use the coordinates of N for x2, y2:
$\sqrt{(3-2) ^{2}+(4-3) ^{2} }$
which simplifies to
$\sqrt{(1 )^{2}+(1) ^{2} }$ which is $\sqrt{2}$
So that is the length of both MN and LM. So far our perimeter is $\sqrt{2} + \sqrt{2}=2 \sqrt{2}$
Now let's use the same formula to find out the length of one of the longer segments:
$\sqrt{(5-3) ^{2} +(3-2) ^{2} }$
which simplifies down to
$\sqrt{(2) ^{2} +(1) ^{2} }$
which is of course $\sqrt{5}$
Since we have 2 of those lengths, $\sqrt{5} + \sqrt{5}=2 \sqrt{5}$
So our perimeter is, in the end, $2 \sqrt{2}+2 \sqrt{5}$
That's the third choice down

7 0

3 years ago

If 84 is divisible by 2, then 84 is an even number

RideAnS [48]

Answer:

Yes

Step-by-step explanation:

All even numbers are divisible by two.

5 0

3 years ago