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tangare [24]
3 years ago
6

12x/14+85-961+98-900 HELP

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
7 0
The answer is actually -139.25
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You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find t
iogann1982 [59]

Answer:

P(2 quarters) = 19/ (13*16) = 19/208  = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

ok

first draw:  there are 20 quarters to choose from

second draw: there are 19 quarters left to choose

so Total coins are 65 coins

P(2 quarters) = P( 1st quarter)* P(2nd quarter)

P(2 quarters) =  20/65   *   (19/64)

P(2 quarters) = 4/13 *  19/64

P(2 quarters) = 19/ (13*16) = 19/208

4 0
3 years ago
A club with 12 members is to choose three officers president vice-presidents and secretary-treasurer if each office is to be hel
lesya692 [45]

Answer:

12P3 = 1320

Step-by-step explanation:

How you need select three persons of a group of twelve persons, but in the selection each member of the group has a different position, then you need use a permutation

Permutation is defined how

nPr = \frac{n!}{(n-r)!}

In our case n = 12 and r = 3

Thus

12P3 = \frac{12!}{(12-3)!}

12P3 = 1320

6 0
3 years ago
<A and <B are vertical angles. If m<A = (7x - 8)⁰ and m<B = (6x + 17)°, then find the value of x.​
loris [4]

Answer:

x = 25

Step-by-step explanation:

Vertical Angles tell us that they are congruent, so:

7x - 8 = 6x + 17

x - 8 = 17

x = 25

Hope this helps!

8 0
3 years ago
Briefly describe scientific notation. how is it useful for writing large and small​ numbers? how is it useful for making​ approx
Alenkasestr [34]
Scientific notation, also called pattern or notation in exponential form, is a way of writing numbers that accommodate values too large (100000000000) or small (0.00000000001) to be written in a conventional manner.

 The use of this notation is based on powers of 104
 Example:
 Big numbers:
 100000000000 = 1 * 10 ^ {11}

 Small numbers:
 0.00000000001 = 1 * 10 ^{-11}

 However, in areas such as physics and chemistry, scientific notation is important to make approximations such as:
 mass of a proton
 mass of an electron and others.
4 0
3 years ago
Lyle bought 6 bell pepers for $11.34. What was the cost of 1 bell pepper?
Morgarella [4.7K]

Answer:

$1.89

Step-by-step explanation:

11.34/6= $1.89 for one bell pepper

7 0
3 years ago
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