Answer:
5 $20 bills and 7 $10 bills
Step-by-step explanation:
You need to have 12 bills, and their values must add up to $170. Start with a guess, and adjust the guess until you find the answer.
The total number of $20 bills and $10 bills must be 10.
I made a table below. I started with a guess and kept adjusting it.
Number of Number of Total
$20 bills $10 bills Value
8 ($160) 4 ($40) $200 Value is too high.
6 ($120) 6 ($60) $180 Value is close
5 ($100) 7 ($70) $70 Correct value
Answer: 5 $20 bills and 7 $10 bills
Answer:
<em><u>x = -0.5</u></em><em> </em>
Step-by-step explanation:
<em>You need to combine like terms</em>
x * 2 + 5x = -6
<em>Add x to 5x</em>
6x * 2 = -6
<em>Divide 2 from both sides</em>
6x = -3
<em>Divide 6 from both sides to get x alone</em>
x = -0.5
<em>Hope this helps</em>
Answer:
90
Step-by-step explanation:
I say 90 because 24 is just a little higher than 1/4 of 80 and since 1/4 of 300 is 75, 90 is the best estimate based off the sample survey. Hope this helps!
