How many pounds of a 10% copper alloy must be mixed with 500 lb of a 30% copper alloy to make a 22.5% copper alloy?____lbs Translate into a variable expression. Then simplify.a number n decreased by the difference between fifteen and the numberVariable expression ___Simplified expression ____  Which numbers are solutions of the inequality 4x − 2 > 6? (Select all that apply.)-5246 Find the cost per ounce of a sunscreen made from 140 oz of lotion that cost $3.44 per ounce and 90 oz of lotion that cost $11.03 per ounce. $ ___per ounceA coffee merchant combines coffee that costs $6 per pound with coffee that costs $4.50 per pound. How many pounds of each should be used to make 25 lb of a blend costing $5.43 per pound? $6 per lb coffee    lb$4.50 per lb coffee    lb A coffee merchant combines coffee costing $3.50 per pound with coffee costing $3.00 per pound. How many pounds of each should be used to make 30 lb of a blend costing $3.20 per pound?$3.50/lb coffeelb$3.00/lb coffeelb Joseph Abruzzio decides to divide a gift of $6000 into two different accounts. He deposits $2000 in an IRA account that earns an annual simple interest rate of 5.5%. The remaining money is placed in an account that earns an annual simple interest rate of 8.25%. How much interest will Joseph earn in one year from the two accounts?$ Two investments earn an annual income of $946. One investment earns an annual simple interest rate of 7.9%, and the other investment earns an annual simple interest rate of 10.5%. The total amount invested is $10,000. How much is invested in each account?7.9% investment$10.5% investment$ Suppose a and b are positive numbers such that a < b. State whether an absolute value equation in the given form has no solution, two negative solutions, two positive solutions, or one positive and one negative solution.|x − b| = a (choose one)no solutiontwo negative solutions     two positive solutionsone positive and one negative solution

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Asked Sep 18, 2019
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How many pounds of a 10% copper alloy must be mixed with 500 lb of a 30% copper alloy to make a 22.5% copper alloy?

____lbs

 

Translate into a variable expression. Then simplify.

a number n decreased by the difference between fifteen and the number
Variable expression ___
Simplified expression ____
 
 
Which numbers are solutions of the inequality 4x − 2 > 6? (Select all that apply.)
-5
2
4
6
 
Find the cost per ounce of a sunscreen made from 140 oz of lotion that cost $3.44 per ounce and 90 oz of lotion that cost $11.03 per ounce.
$ ___per ounce
A coffee merchant combines coffee that costs $6 per pound with coffee that costs $4.50 per pound. How many pounds of each should be used to make 25 lb of a blend costing $5.43 per pound?
$6 per lb coffee     lb
$4.50 per lb coffee     lb

 

A coffee merchant combines coffee costing $3.50 per pound with coffee costing $3.00 per pound. How many pounds of each should be used to make 30 lb of a blend costing $3.20 per pound?

$3.50/lb coffee lb
$3.00/lb coffee lb

 

Joseph Abruzzio decides to divide a gift of $6000 into two different accounts. He deposits $2000 in an IRA account that earns an annual simple interest rate of 5.5%. The remaining money is placed in an account that earns an annual simple interest rate of 8.25%. How much interest will Joseph earn in one year from the two accounts?
$

 

Two investments earn an annual income of $946. One investment earns an annual simple interest rate of 7.9%, and the other investment earns an annual simple interest rate of 10.5%. The total amount invested is $10,000. How much is invested in each account?

7.9% investment $
10.5% investment $

 

Suppose a and b are positive numbers such that a < b. State whether an absolute value equation in the given form has no solution, two negative solutions, two positive solutions, or one positive and one negative solution.

|x − b| = a (choose one)
no solution
two negative solutions     
two positive solutions
one positive and one negative solution
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Expert Answer

Step 1

As per norms, the first three questions are answered.

Step 2

(1) 300 lb are required

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() Let x lb be required: Then 10% of x+30% of 500 22.5% of (x+500) 0.lr+150 0.225.r+112.5 0.125.x 37.5 r300 lb

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Step 3

Variable expression : n-(15-n); si...

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difference benween 15 and the number 15-n nis decreased by (5-n) п- (15—п) — п-15+п =2n-15

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