Answer:
the anwser is -7.9
Step-by-step explanation:
Answer:
C. 12
Step-by-step explanation:
50-15=35
35÷2.75=12.7272
Answer:
$19.68
Step-by-step explanation:
To find out how much it'll cost Melissa to buy the ribbon, we simply need to find all the side lengths (the perimeter) and then multiply then by the cost.
We already know two of the side lengths: 6 and 8. To find the third, remember that the question tells us that the triangle is a right triangle. Therefore, we can use the Pythagorean Theorem. The unknown side is the longest side. Therefore:
Substitute 6 for a and 8 for b. This gives us:
Solve for c. Square the values:
Add:
Take the square root of both sides:
Therefore, our unknown side is 10 feet.
Therefore, the sum of our side lengths or the perimeter is:
Add:
This means that the total cost will be:
Multiply. The foot/feet cancel:
Multiply:
So, it will cost Melissa a total of $19.68 to buy the ribbon.
And we're done!
Edit: Typos
First, let's start with the whole number.
Half of 5 is 2.5 or 2 1/2.
4/5 translated into a decimal is 0.8, so half of that would be 0.4.
0.4 translated into a fraction is 2/5.
Add 2 1/2 to 2/5.
I'll show you the long way and the easier way.
The long way is that you find a common denominator for both fractions.
A common denominator would be 10, because you would multiply 2 and 5 (the denominators).
So this would translate the problem into 2 5/10 (Remember that whatever you do to the bottom you have to do to the top) and 4/10.
If you add these together you get 2 9/10.
The easy ways is taking the decimals in the problem (2.5 and 0.8)
Half of 0.8 is 0.4 (As mentioned above).
2.5 + 0.4.
This equals 2.9.
Answer:
= 6n - 2
Step-by-step explanation:
Because you can use the formula = a1 + d (n - 1) to identify the arithmetic sequence :)