Answer:
Yes and she would have $2 left over because all the food costs $91.
Step-by-step explanation:
We should set up an equation so that everything makes sense. A calculator would be wise for this problem, but I am going to lay it out anyhow.
We should convert the mixed numbers to improper fractions to not be confused. 3 1/2 becomes 7/2 or 3.5 and 2 1/3 becomes 7/3.
From your wording, we can assume that the money Mrs. Donnelly has is either greater than or equal to $93.
Thus, we have 12*(7/3) + 18*(7/3) is equal to or greater than 93 (this is an inequality).
The math shows that the food costed 91 and so she only has $2 left.
Answer:
Step-by-step explanation:
y = 9x + 8
y = 7.5x + 16
1.5x = 8
x = 5.3 hours
Answer:
6.871 decimeters
Step-by-step explanation:
687.1 square centimeters = 6.871 square decimeters
1 dm² = 100 cm²
Answer:
20*x
Step-by-step explanation:
alright so lets start with how many cents are in a dollar
100 cents per dollar
we need to find 20 pounds so we can use an equation i made
lets say it's 22c per pound
20*x=$
lets try plugging in 22
20*.22=$4.20



<u>Putting value of a as 3 and b as -2, we get</u><u> </u><u>:</u>



• <u>Using negative Exponents Law</u>








<u>• Using negative Exponents Law</u>




<u>• Using negative Exponents Law</u>























• Question 1 - 
• Question 2 - 
• Question 3(1) - 
• Question 3(2) - 

<u>★</u><u> </u><u>Negative</u><u> Exponents Law -</u>

★
can be written as 
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can be written as 
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can be written as 
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can be written as 
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can be written as 
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can be written as 
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can be written as 
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can be written as 
★ <u>During Addition and Subtraction</u>
• minus (-) minus (-) gives plus (+)
• minus (-) plus (+) gives minus (-)
• plus (+) minus (-) gives minus (-)
• plus (+) plus (+) gives plus (+)
• Also the sign of the resultant term depends upon the sign of the largest number.

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