Answer:
x=22
Step-by-step explanation:
2x-40+8x=180
10x=220
x=22
Mr. and Mrs. Lorenzo have saved $38,430 for the home they want to buy
Information about the problem:
- Initial cost = $213,500
- Savings = 18%.
- Final savings =?
To solve this exercise we have to apply the percentage formula:
Final savings = initial cost * savings / 100
Final savings = $213,500 * 18 / 100
Final savings = $213,500 * 0.18
Final savings = $38,430
<h3>What is a percentage?</h3>
Percentage is defined as the number that represents a ratio of a total that is divided by 100 equal parts. It is represented by the symbol %.
Learn more about percentage at: brainly.com/question/24877689
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Since there is a 70% chance of making $12,000 so have that:
.70 × 12000 = 8400
Also, we have a 10% chance of breaking even, so we also have that:
.10 × 0 = 0
Finally, we have a 20% chance of losing $7400 so we also have that:
.20 × 7400 = 1480
Thus, putting it all together we have:
.70(12000) + .10(0) + .20(7400) = 8400 + 0 + 1480 = 9880
Therefore, the expected value is:
$9880
Answer:
Step-by-step explanation:
total =20
red=10
P(red)=10/20=1/2