Answer:
The number of penguins on the island is 17 and the number of bears on the island is 4.
Step-by-step explanation:
We are given that an island's only residents are penguins and bears, and if there are 21 heads and 50 feet on the island.
Let the number of penguins on the island be 'x' and the number of bears on the island be 'y'.
Also, we know that bears and penguins both have one head, and the bear has 4 feet and the penguin has 2 feet.
<u>So, according to the question;</u>
- The first condition states that there are 21 heads, that means;
x + y = 21
x = 21 - y ---------------- [equation 1]
- The second condition states that there are 50 feet on the island, that means;
2x + 4y = 50
x + 2y = 25
21 - y + 2y = 25 {from equation 1}
y = 25 - 21
y = 4
Now, putting the value of y in equation 1, we get;
x = 21 - y
x = 21 - 4 = 17
Hence, the number of penguins on the island is 17 and the number of bears on the island is 4.
$29.99 is the final price.
"y" is the original price.
Subtract the savings from the original price to get the final price of $29.99.
70% = 70/100 = .70
y - (y x .70) = 29.99
y - .7y = 29.99
.3y = 29.99
.3y/.3 = 29.99/.3
y = 99.96667
y = $99.97 (rounded)
Answer:
Adam's car will be 8,406£ in 22 years.
Step-by-step explanation:
I. Find the lose value of 2.5% car by
2.5/100 = x/18,680
46,700/100 = x
x = 467 or the lose value in 1st year.
II. Find the true value of Adam's car by
n year = 18,680 - 467(n)
1st = 18,680 - 467(1)
= 18,213 means if he sell his car now, he'll get 18,213£
22th = 18,680 - 467(22)
= 18,680 - 10,274
= 8,406£
That makes 8,406£ is the right answer.
Hope that help :)
Answer: 2(3m+4n+2) is the answer
Explanation: because I’m smort;)
First make the denominators the same = 4 5/20 - 3 12/20. Then make them improper fractions= 85/20-72/20= 13/20. Since that is already simplified the answer is 13/20.
