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kramer
3 years ago
14

Loy paid $(4x+7) for a beef roast and $(2x-5) for five pounds of potatoes write an expression for the total amount he spent on f

ood
Mathematics
1 answer:
maksim [4K]3 years ago
4 0
The expression for the total amount he spent on food would be:

(4x+7) + (2x=5) 
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Okay so an in and out box is a box is basically a tale. Do you have a rule ? so if you have a rule..(which i do not know) lets say the rule is +2. lets also say that the IN says 4. Then what would be the out ? The out would be whatever 4+2 is. So basically the "out" is the outcome. 
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Neelam is pouring sand into a clear box to make sand art. The box is a right rectangular prism, and the base of the box is 7 in.
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2 years ago
Mary took out a loan to buy a $30,000 boat but had $2,000 cash to put down.Which of the following is true? a. Mary decreased bot
Art [367]

Answer: The answer is (b) Mary increased both assets and liabilities.


Step-by-step explanation: Given that Mary is going to buy a boat worth $30,000 with the help of a loan but she had $2000 cash to put down.

As a result, Mary took the loan for $28,000 to buy the boat. This will add one more number to the number of Mary's assets and also add one more number to the number of liabilities Mary has.

Therefore, after this purchase, the number of assets and the number of liabilities will both increase for Mary.

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3 years ago
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Lifetime of a certain transistor in a certain application has a mean of 900 hours and a standard deviation of 30 hours. Four tra
AURORKA [14]

Answer:

3600 hours

Step-by-step explanation:

let total life time of t four transistors T = X1 + X2 + X3 + X4 (where X1,X2,X3 and X4 are life time of individual transistors

mean of the length of time that four transistors will last =E(T)=E(X1 + X2 + X3 + X4)

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and standard deviation of total time =SD(T)=sqrt(Var(T)) = sqrt(Var(X1) + Var(x2) + Var(x3) + Var(x4))

where sqrt means the square root

=sqrt(302+302+302+302) =sqrt(3600) =60

7 0
3 years ago
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