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faltersainse [42]
3 years ago
9

Joanie's bag of trail mix has a mass of 0.75 kilogram. She and some friends eat 0.5 kilogram of the mix. How many kilograms of t

rail mix are left.
Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0
0.75-0.5= 0.25 kilograms
solmaris [256]3 years ago
5 0
0.25 cuz 0.75 - 0.5 = 0.25
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You can copy the data into Excel by highlighting the data, right-clicking and selecting Copy, then opening Excel, clicking on a
Iteru [2.4K]

Answer:

Low income group :

Mean = 22.100

Median = 22.000

Standard deviation = 4.717

High Income group :

Mean = 19.771

Median = 20.000

Standard deviation = 3.255

Step-by-step explanation:

Low income : 19,20,13,28,21,27,16,21,19, 19,34,24, 24,14,24,25,23,22,20,21,14,23,17,26,24,24,20,24,27,16,22,17,29,20,25,22,20,34,24,22

High Income : 23 19 19 18 20 18 17 25 13 24 25 17 21 19 17 22 22 15 19 23 19 23 22 20 20 20 13 21 16 13 21 24 23 21 20

Using Excel :

Mean of low income, Σx / n = 884/40 = 22.100

Median of low income group : 1/2(n+1)th term = Median of low income = 22.000

Standard deviation of low income group :

√(Σ(x - mean)²/n) = 4.717

High Income group :

Mean of high income, Σx / n = 692/35 = 19.771

Median of high income group : 1/2(n+1)th term = Median of high income = 20.000

Standard deviation of low income group :

√(Σ(x - mean)²/n) = 3.255

5 0
3 years ago
If a number n has exactly 7 divisors, how many divisors does n squared have?
Anna [14]
A number n=p_1^{a_1}\cdot p_2^{a_2}\cdot\ldots\cdot p_k^{a_k}, where p_k are distinct prime numbers, has (a_1+1)(a_2+1)\cdot\ldots\cdot(a_k+1) divisors.

We know that n has 7 divisors. 7 is a prime number, so among the numbers a_1+1,a_2+1,\ldots,a_k+1 there is only one that is equal to 7.

So,
a_k+1=7\\
a_k=6

That means n=p^6 where p is a prime number.
n^2=(p^6)^2=p^{12}, therefore the n^2 has 12+1=13 divisors.
4 0
3 years ago
Did I get this right or wrong if wrong tell me the answer please I’ll give you Brainliest
andrezito [222]
You got the answer right
8 0
3 years ago
Read 2 more answers
How much money will you need to deposit to earn $75 and simple interest and six months of your bank pays 5% annually
Goshia [24]

Answer:

$250

Step-by-step explanation:

I=Prt

75=P*.05*6

75÷6=P*.05*6 ÷ 6

12.5 ÷ .05=P*.05 ÷.05

$250=P

3 0
4 years ago
Write a complete two-column proof for following information:
Fantom [35]
<span>Given:

AB = x + 16

BC = 4x + 11 

AC= 77

We can safely assume that,

AB + BC = AC

x + 16 + 4x + 11 = 77

5x + 27 = 77

5x = 77 - 27

5x = 50

x = </span>\frac{50}{5}

x = 10

Hence, 

AB = x + 16 = 10 + 16 = 26

Hence, proved.
8 0
4 years ago
Read 2 more answers
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