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torisob [31]
3 years ago
12

Anna shipped a small package from

Mathematics
1 answer:
lina2011 [118]3 years ago
3 0

Answer:

$0.23

Step-by-step explanation:

5 ounces  cost $1.15

1 ounce cost $1.15/5 = $0.23

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How many positive integers can be expressed ad a product of two or more of the prime numbers 5,7,11,and 13 if no one product is
sertanlavr [38]

Answer:

11 positive integers can be expressed.

Step-by-step explanation:

Consider the provided information.

The number of possible prime numbers are 5,7,11,and 13.

There are 4 possible prime numbers.

How many positive integers can be expressed as a product of two or more of the prime numbers, that means there can be product of two numbers, three number or four numbers.

The formula to calculate combinations is: ^nC_r=\frac{n!}{r!(n-r)!}

The number of ways are:

^4C_2+^4C_3+^4C_4=\frac{4!}{2!(4-2)!}+\frac{4!}{3!(4-3)!}+\frac{4!}{4!}

^4C_2+^4C_3+^4C_4=\frac{4!}{2!2!}+\frac{4!}{3!}+1

^4C_2+^4C_3+^4C_4=6+4+1

^4C_2+^4C_3+^4C_4=11

Hence, 11 positive integers can be expressed.

8 0
3 years ago
A coin is tossed 88 times. what is the probability of getting all tails? express your answer as a simplified fraction or a decim
dmitriy555 [2]

|\Omega|=2^{88}=309485009821345068724781056\\ |A|=1\\\\ P(A)=\dfrac{1}{309485009821345068724781056}

4 0
3 years ago
Find the volume of a pyramid with a square base, where the side length of the base is
Orlov [11]

Answer:

2896.34 cubi centimetres

Step-by-step explanation:

7 0
3 years ago
Evaluate b-(-1/8)+c where b=2 and c=-7/4​
tatiyna

Answer:

3/8

Step-by-step explanation:

Evaluate b - -1/8 + c where b = 2 and c = -7/4:

b - (-1)/8 + c = 2 - (-1)/8 - 7/4

Put 2 + 1/8 - 7/4 over the common denominator 8. 2 + 1/8 - 7/4 = (8×2)/8 + 1/8 + (2 (-7))/8:

(8×2)/8 + 1/8 - (7×2)/8

8×2 = 16:

16/8 + 1/8 - (7×2)/8

2 (-7) = -14:

16/8 + 1/8 + (-14)/8

16/8 + 1/8 - 14/8 = (16 + 1 - 14)/8:

(16 + 1 - 14)/8

16 + 1 = 17:

(17 - 14)/8

| 1 | 7

- | 1 | 4

| 0 | 3:

Answer:  3/8

8 0
3 years ago
Which expression is equal to 4^5 x 4^-7 divided by 4^-2
Mars2501 [29]
This is not my level but i can try to solve it
3 0
3 years ago
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