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Paha777 [63]
3 years ago
11

You draw two cards at random from a standard deck. What is the probability of drawing at least one diamond?

Mathematics
1 answer:
hodyreva [135]3 years ago
7 0
Well there are 52 cards in a deck. There are 13 of each kind of card. So 13/52 are diamonds
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you have 12 cards. one out of every 4 cards is faceup. the rest are facedown. how many cards are faceup
umka2103 [35]
3 cards 

1/4 = x/12      1/4 = 3/12 
4 * 3 = 12
1 * 3 = 3
x = 3 
7 0
2 years ago
Adam is 12 years old. His sister Linda is one year less than 3 times his age. What is Linda’s age?
Len [333]
3a - 1 = 12
+1 +1
—————-
3a = 13
—- ——
3 3
—————
A=4 1/3
4 0
3 years ago
Identify the volume of the composite figure rounded to the nearest tenth. HELP PLEASE!!
nirvana33 [79]

Answer:

V = 115.3 ft³

Step-by-step explanation:

The left part of the figure shows a cube of side length 4.2 ft.  The volume of a cube is V = s³, where s is the side length.  Hence, the volume of this particular cube is V = (4.2 ft)³ = 74.088.

The volume of a pyramid is V = (1/3)(base area)(height).

Here V = (1/3)(4.2 ft)²(7 ft) = 41.16 ft³.

Summing up the two distinct areas, we get V = 41.16 ft³ + 74.088 ft³, or

V = 115.3 ft³ after rounding up to the nearest tenth.

3 0
3 years ago
Use the rules for multiplication by powers of 10 to calculate 3 × 100
padilas [110]
3 × 100 = 300

the easiest way to do it is just add the same amount of zero's to the number you multiplied with. for example

3 × 10000 if you would just take out the zero's
it would look like this. 3 × 1

the answer of course would be 3 then you can put the zero's back in the answer (30000)

at least that's how I understood it

3 × 100 =

3 × 1(00) =
-->

-->
(00)
3 × 1(00) = 3

3 × 100 = 300
4 0
3 years ago
On a map, the distance between two towns is 3.4 inches. The map scale is 2 inches: 25 miles. What is the actual distance between
Mariulka [41]
For this question we can solve it by setting up a proportion:

\frac{2inches}{25 miles}= \frac{3.4inches}{x}

Now we can solve for x to find the total distance between the towns. Let's cross multiply and solve for x:

2x=85
x=42.5miles

So now we know that the total distance between the towns is 42.5 miles.
4 0
3 years ago
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