The rate of how many projects Taylor can complete can be modeled at x/6 and Brianne can be modelled as x/8. So, by combining the functions and setting equal to 1, you can solve.
x/6 + x/8 = 1
You have to give common demoninators
4x/24 + 3x/24 = 1
Then add together and cross multiply. Giving you an answer of 24/7 or roughly 3.43 hours when rounded to the nearest hundredth.
Answer:
C. 99
Step-by-step explanation:
If you wouldn't mind giving me brainliest, i'm just trying to rank up.
Alright, you will need to find the areas of 3 of the sides(i.e. Top/Bottom, Left/Right, Front/Back), to do so let's go through multiplying these:
Since we're not looking for the Volume, we'd just multiply one variable by another, for instance:
Bottom = Length * Width
x = 16 * 12 | 16 * 12 = 192
Left = Length * Height
x = 16 * 3 | 16 * 3 = 48
Front = Width * Height
x = 12 * 3 | 12 * 3 = 36
Now that we know 3 of the sides, we then multiply each by 2 since there's another side to this box(in other words, we'd be adding both sides together, multiplying it by 2 still gives you the same answer though).
Bottom + Top, or Bottom * 2
192 + 192 = 384 | or | 192 * 2 = 384
Left + Right, or Left * 2
48 + 48 = 96 | or | 48 * 2 = 96
Front + Back, or Front * 2
36 + 36 = 72 | or | 36 * 2 = 72
Adding these together gives you the answer you're looking for. ^ ^
384 + 96 + 72 = 552
So, the answer should be that Angie needs 552 square inches of wrapping paper for her present. I hope that helped, have a great rest of your day!
| | Ghostgate (Alter) | |
Before lunch, they drove at a constant rate of 55 miles per hour for 3 hours -> They drove a total of 55 x 3 = 165 miles.
After lunch, they drove at a constant rate of 45 miles per hour for 2 hours -> They drove a total of 45 x 2 = 90 miles.
So, the total amount of miles the Ramos family drove is 165 + 90 = 255 miles.
To find the answer you divide both sides by 9. Which then gives you x=-6 as your answer.
C. -6
