-3+4=1 and 1 -5= -4, -4+6=2 AND 2-7=-5 Answer =-5
Seven more than a number would be B. d + 7
whenever you hear a seven (or any other number) MORE THAN, think of adding that number!
Hope this helps :)
Answer:
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Step-by-step explanation:
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Answer:
<u>30 gallons solution 4% and 10 gallons solution 8%</u>
Step-by-step explanation:
<h3>x•4%+y•8%=40•5% </h3>
<em><u>4x+8y=40•5 and x+y=40</u></em>
x=40-y
4(40-y)+8y=200
160-4y+8y=200
4y=200-160
4y=40 => y=10 (gallons solution 8%)
=> x=40-10=30 (gallons solution 4%)
30 gallons solution 4% and 10 gallons solution 8%
