The P(draw a black card) is 3/10.
<u>Step-by-step explanation:</u>
It is given that the deck contains 3 black cards and 7 red cards.
Therefore, the total number of cards in the deck = 7 red + 3 black = 10 cards.
Now, we need to find the possible outcomes of getting a black card. So, the number of black cards in the deck = 3 black cards.
<u>The formula to find the probability is given by :</u>
Probability = Number of required event / Total number of outcomes.
Here, the required event is getting a black card out of 10 cards in the deck.
- The number of required event is 3.
- The total number of outcomes is 10.
Probability (to draw black card) = 3/10.
Answer:
for the first one y would be zero
for the second one c would be -13/3
Answer:
49
Step-by-step explanation:
28-21=7
7 to the power of two is the same as 7(7)
7(7)=49
Answer:
16
Step-by-step explanation:
10+6=16
Answer:
x = 9
Step-by-step explanation:
3x - 5x + 8x = 4x + 18
combine like terms on the left side and you get 6x = 4x + 18
then you subtract 4x from both sides
you get 2x = 18
divide each side by 2 and you get x = 9