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attashe74 [19]
3 years ago
10

What is the probability of drawing a spade from a standard deck of cards on a second draw given that a spade was drawn on the fi

rst draw or not replaced
Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0
There are 52 cards in a deck, 13 of which are spades. If the first card drawn was a spade, and it is not replaced, then this leaves 51 cards, 12 of which are spades. Therefore the probability of the second draw being a spade is 12/51 = 4/17.
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There are 18 bikes in a bike rack. There are 4 more blue bikes than yellow bikes,and 2 less yellow bikes than green bikes.how ma
Phoenix [80]
Y+4= x blue bikes
G-2= x yellow bikes

4y+4= 8 blue bikes
4y+2= 6 green bikes
4y= 4 yellow bikes

8 blue bikes
+
6 green bikes
+
4 yellow bikes
=
18 bikes total
5 0
3 years ago
What's bigger 9/10 or 4/5
ch4aika [34]
To be able to compare 2 fraciton we have to make common denominator and then we can just compare numerators. 
\frac{4}{5}= \frac{4*2}{5*2}= \frac{8}{10}
Now we can compare numerator from the first (9) and from the second fraction (8)
9>8, so the bigger is 9/10
4 0
3 years ago
Read 2 more answers
-3x + y = -24<br> y = 7x + 22
levacccp [35]

Answer:

first one: 8

second one: 3

Step-by-step explanation:

-3x + y = -24 |÷(-3x)

y = 8

y = 7x + 22 |-y

(y would be 1; the 7x moves to the other side.) meams:

7x = 21 |÷7

x = 3

3 0
2 years ago
Read 2 more answers
If a car goes from 60 miles per hour to 10 miles per hour in 5 seconds, find its acceleration. Enter your answer as a whole numb
denis-greek [22]

Answer:

a=-4.47\ m/s^2

Step-by-step explanation:

Given that,

Initial speed of a car, u = 60 mph = 26.82 m/s

Final speed of a car, v = 10 mph = 4.47 m/s

Time, t = 5 s

We need to find the acceleration of the car. The rate of change of velocity is called the acceleration of an object. It can be given by :

a=\dfrac{v-u}{t}\\\\a=\dfrac{4.47 -26.82 }{5}\\\\a=-4.47\ m/s^2

So, the acceleration of the car is 4.47\ m/s^2 and it is deaccelerating.

8 0
3 years ago
Erica knits 18 squares on monday. She knits 7 more squares each day from tuseday to thursday. How many squares did Erica knit in
ANEK [815]

Answer:

39

Step-by-step explanation:

Erica knits 18 squares on Monday. She knits Tuesday through Thursday which is 3 days. She knits 7 squares each day making it 21 total squares these days. For the whole week, she has knitted 18 + 21 = 39.

3 0
2 years ago
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