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Inessa [10]
2 years ago
11

A card is drawn from a standard deck. Find the probability of drawing a heart or a 7.

Mathematics
1 answer:
Mazyrski [523]2 years ago
6 0
<h3>Answer:   4/13</h3>

=======================================================

Explanation:

There are A = 13 hearts and B = 4 copies of "7"

The count A+B = 13+4 = 17 may seem like it's the count of hearts or "7" cards, but we're double counting the 7 of hearts. So the true count is actually 17-1 = 16

There are 16 cards we want (either a heart or a "7") out of 52 total. Therefore, the probability is 16/52 = (4*4)/(4*13) = 4/13

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What is the smallest number that becomes 600 when rounded to the nearest hundred?
galina1969 [7]

Answer:

B. 550

Step-by-step explanation:

550 is the smallest number that becomes 600 when rounded to the nearest hundred

6 0
2 years ago
Read 2 more answers
PLease help!!
weqwewe [10]
√45 + √125

= 3√5 + 5√5

= 8√5

Answer is C.

Hope it helps!
6 0
3 years ago
Help please!!!
Tanya [424]
Sin C = AB / AC
We have AC. We need to calculate AB

ABC is a right triangle. Therefore, AC² = AB²+BC²
82² = AB ² + 80² => AB² = 82² - 80²
AB = 18

Sin C = 18/82 = 9/41

Good luck
4 0
3 years ago
Read 2 more answers
4 divided by 992 because my calculator isn't helping and i'm not trynna fail
Black_prince [1.1K]

Answer:

4/992 = 0.00403225806

Step-by-step explanation:

I hope this helps!!

4 0
3 years ago
The quantity demanded x for a product is inversely proportional to the cube of the price p for
Harrizon [31]
X = k/p^3
125 = k/10^3 = k/1000
1000 x 125 = k
k = 125000

x = 125000/p^3

The profit is given by G = px - (125 + 2x) = p(125000/p^3) - 125 - 2(125000/p^3) = 125000/p^2 - 250000/p^3 - 125
For maximum profit:
dG/dp = 0
dG/dp = -250000/p^3 + 750000/p^4 = 0
750000 - 250000p = 0
p = 750000/250000 = 3

Therefore the price that will yeaild maximum profit is $3.
6 0
3 years ago
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