All categories

2 years ago

You are rolling two dice at the same time. What is the probability of rolling a sum of 5 or 9?

2 answers:

8 0

You can get a 5 by rolling :
1 and 4
2 and 3
3 and 2
4 and 1

You can get a 9 by rolling :
3 and 6
4 and 5
5 and 4
6 and 3

There are 36 possible outcomes, hence your probability is $\frac{4\cdot2}{36}=\boxed{\frac29}$

oksian1 [2.3K]2 years ago

8 0

Answer:

Step-by-step explanation:

To find the probability we use the mutually exclusive probability formula P(A) + P(B). The probability of getting a sum of 5 is

1 /9

and the probability of getting a sum of 9 is

1 /9

. The sum is

2 /9

You might be interested in

Please help with this it’s 11 points

Evgesh-ka [11]

Answer:

Line means going on upto point but line segment means limited line

8 0

2 years ago

Read 2 more answers

Two-fifths of the students in Mrs. Navares fifth grade class ride the bus to school. if there are 25 students in her class, how

butalik [34]

You do a multiplication of 2/5 times 25 and you get 50/5 which is equal to 10. So @0 students ride the school bus.

8 0

2 years ago

Read 2 more answers

Eva wants to make two pieces of pottery. She needs 3/5 pound of clay for one piece and 7/10 pound of clay for the other piece. S

Nostrana [21]

3/5 + 7/10 = 6/10 + 7/10 = 13/10 = 1 and 3/10 lbs. needed

She has 4/5 *3/1 bags = 12/5 = 2 and 2/5 pounds

2 2/5 - 1 3/10 = 2 4/10 - 1 3/10 = 1 and 1/10 pounds left over

4 0

3 years ago

When using a debit card: A:There are always fees. B:Identification is always required. C:You still need to record transactions i

Komok [63]

Answer:

Step-by-step explanation:

Since this isn't a credit card, there are no interests or fees on a debit card, so A is incorrect. B is also incorrect. You only need identification when you are withdrawing or depositing at a bank, but purchases made in stores or online do not need your identification. You also don't need to record transactions in your checkbook (but it is recommend to keep track of purchases). Modern day technology already records transaction history and all you need to do is access it online.

D is correct because if someone steals your PIN for your debit card, they could go to stores and use that money. You can dispute charges and report to the bank if that happens.

7 0

3 years ago

Abigail tosses a coin off a bridge into the stream below. The distance, in feet, the coin above the water is modeled by the equa

melomori [17]

Answer:

7 seconds

Step-by-step explanation:

Distance of the coin above the water is modeled by the equation

$y=-16x^2+96x+112$

where $x$ is time taken to cover the distance

Now equating with zero.

$0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1$

So, time taken by the coin to hit the water is 7 seconds.

6 0

3 years ago