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Olin [163]
3 years ago
5

David bought a baseball card for $40. the value of the card increased by 25%. what is the new value of the card?

Mathematics
1 answer:
kenny6666 [7]3 years ago
5 0

Answer:

65 i think

Step-by-step explanation:

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How many handshakes are possible at a party of 65 people if everyone shakes hands once?
riadik2000 [5.3K]
You must calculate how many ways can 2 people be selected from 65.
The formula is:
n! / r! * (n-r)! =
65! / 2! * 63! =
65*64*63! / 2 * 63! =
65*64 / 2 =
2,080 handshakes

Source:
http://www.1728.org/combinat.htm




7 0
3 years ago
Lena is going to the airport. It is 10: 41 am right now. Lena's flight will depart in 3 hours 43 minutes. What is the departure
NikAS [45]

the departure time is 2:24 pm

8 0
3 years ago
In her shop lee had a piece of fabric measuring 150 meter a costumer asked her to sew 10 cushion covers each requiring 3 meters
maria [59]

Answer:

  99 m

Step-by-step explanation:

The 10 covers required ...

  (10 covers) × (3 m/cover) = 30 m

So the amount remaining is ...

  150 m - 30 m - 21 m = 99 m

Lee has 99 m of the fabric left.

6 0
3 years ago
Explain how to use the standard normal table to find the probability associated with the shaded area under the curve
Semmy [17]
DO NOT CLICK THE FILE
8 0
2 years ago
if 8 and 15 are two smallest values in a pythagorean triple, what is the largest value, c, in the triple
GaryK [48]

Answer:

c = 17

Step-by-step explanation:

Use the Pythagorean Theorem to solve this problem.

The equation is a² + b² = c².

"a" and "b" are the length of the two shorter sides or values.

"c" is the length of the longest side or value, also the hypotenuse.

Since we know the two smaller values, we can <u>replace "a" and "b" with 8 and 15</u>. It does not matter which letter you decide to replace with which number.

Then<u> simplify and  isolate "c" </u>to find the largest value.

a² + b² = c²

8² + 15² = c²         Substitute "a" and "b". Square the numbers to simplify

64 + 225 = c²        Add to simplify

289 = c²        

√289 = √c²        Square root both sides

√289 = c      "c" will be isolated because √ and ² are reverse operations

c = √289    Put 'c' on the left side for standard formatting.

c = 17           Answer

Therefore the largest value, c, is 17 in the triple.

6 0
3 years ago
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