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Sladkaya [172]
3 years ago
14

PLS HELP I’ve been trying to do this but I just can’t do it

Mathematics
2 answers:
Dmitrij [34]3 years ago
8 0

Answer:

the answer is 8:1 so 8/1

Step-by-step explanation:

Zarrin [17]3 years ago
7 0

Answer:

26/3

Step-by-step explanation:

6 cups flour

3/4 cup of sugar

ratio of flour to sugar is

(6 flower : 3/4 sugar) multiply both sides by 4

26 flower : 3 sugar

so the ratio is 26/3

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A vendor converts the weights on the packages she sends out from pounds to kilograms (1kg approximately equals 2.2 pounds).
Alexxx [7]

Answer:

a) b) the standard deviation and the mean is affected by the conversion factor as well

c)  the mean is displaced by b units

Step-by-step explanation:

for a new variable

Y=a*X  , where a= constant (conversion factor= 1 kg/2.2 pounds)

then

p(y)= p(a*X) = p(X)

a) mean =μ=E(Y)= ∑ a*X*p(y) = a ∑ X*p(x) = a* E(X)

mean =μ=a*μₓ

b) σ² = ∑ (Y-μ)²* p(y) =  ∑ (a*X-a μₓ)²* p(y) = a²*∑ (X-μₓ)²* p(x) = a²*σₓ²

then

standard deviation = σ= √σ²=√(a²*σₓ²) = a*σₓ

standard deviation = σ= a*σₓ

then the standard deviation and the mean is affected by the conversion factor as well

c) nevertheless for a displacement b

Y₂=X + b (b= constant= 50 gr)

p(Y₂)= p(X + b) = p(X)

then

mean =μ=∑ (X-b)*p(y)=∑ X*p(x)- b ∑ p(x) = E(X) -

mean =μ=μₓ - b

then the mean is displaced by b units

7 0
3 years ago
use a ratio box to solve this problem. There were 144 books about mammals in the library. If the ratio of books about mammals to
kherson [118]

Answer:

128

Step-by-step explanation:

8 0
2 years ago
A function is described by the following ordered pairs: (7, 4.5) (–4, 7.2) (–7.2, –4) (5.2, 3) Which set of ordered pairs repres
sweet [91]

Answer: (4,5,7) ,(7.2,-4),(-4,-7.2),(3,5.2)

Step-by-step explanation:

8 0
3 years ago
Plsss helppp<br>can you pls do this?<br>​
Aleks04 [339]
568 and 836 hope that helps I don’t really know
7 0
2 years ago
Two times the sum of a number and 5 is 20
Art [367]

Answer:

25

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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