Answer:
The Answer is: The first number is 10 and the second number is 8.
Step-by-step explanation:
Let f = first number and s = second number.
The first number is 2 larger than the second:
f = n + 2
The numbers times each other is 80:
f * n = 80
Substitute the value of f, which is (n + 2):
n(n + 2) = 80
n^2 + 2n = 80
n^2 + 2n - 80 = 0
(n + 10)(n - 8) = 0
n^2 + 10n - 8n - 80 = 0, so the first number is 10 and the second one is 8.
Another method, just from thinking about it:
factor 80:
8 * 10, is the first factoring I thought of. I then noted that the difference between the two is 2 and if you multiply them they equal 80.
Hope this helps! Have an Awesome Day!! :-)
Numbers 8/9 and 47/70 are between 3/5 and 5/7
Step-by-step explanation:
- Step 1: Find the equivalent decimal expressions of all the given fractions to find which ones are between 3/5 and 5/7
3/5 = 0.6 and 5/7 = 0.71
Option 1 ⇒ 1/2 = 0.5
Option 2 ⇒ 3/7 = 0.43
Option 3 ⇒ 8/9 = 0.89
Option 4 ⇒ 19/35 = 0.54
Option 5 ⇒ 47/70 = 0.67
∴ 8/9 and 47/70 lies between 3/5 and 5/7
Answer:
5n+2
Step-by-step explanation:
i hope this helps
Answer: $14.75
I just did $0.75 x 7 = $5.25 and subtracted that from $20. Lmk if this helps or if my answer was incorrect!
Answer:
600
Step-by-step explanation:
x+2x=1800
3x=1800
x=600
