The formula for surface area is SA = 2 (wl + hl + hw). Plugging in the numbers that we know, we get SA = 2 (100 + 10h +10h). We know that the crust accounts for half of the surface area.
The surface area was not provided so this is the closest I can go without the provided surface area. I hope this helps you :)
We can find the midpoint by using the two given coordinates and finding the average between them.
We will find the average between the x coordinates and the y coordinates.
We are given these two coordinates of line segment QR: (-3, 14) and (7, 5). Find the midpoint by finding the average (or mean) between the x coordinates (-3 and 7), and the y coordinates (14 and 5).
Find the average by adding up the two coordinates then dividing the answer you get by 2 (because you added two numbers).
x coordinates average: -3 + 7 = 4, 4/2 = 2; their average is 2
y coordinates average: 14 + 5 = 19, 19/2 = 9.5; their average is 9.5 (or 19/2)
Take the two averages and put them together so your answer is: the coordinate of the midpoint of line segment QR is (2, 19/2).
Answer:
Total wrapping papers Serena and her grandmother = 51/10
Step-by-step explanation:
Serena's wrapping paper for parents:
sq meters
Grandmother's wrapping paper:
sq meters
In order to determine the combined wrapping papers for both Serena and grandmother, all we need is to add both.
i.e.
Total papers = Serena's wrapping paper + Grandmother's wrapping paper
![=\frac{18}{5}+\frac{3}{2}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B18%7D%7B5%7D%2B%5Cfrac%7B3%7D%7B2%7D)
![=\frac{36}{10}+\frac{15}{10}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B36%7D%7B10%7D%2B%5Cfrac%7B15%7D%7B10%7D)
![\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{c}+\frac{b}{c}=\frac{a+b}{c}](https://tex.z-dn.net/?f=%5Cmathrm%7BApply%5C%3Athe%5C%3Afraction%5C%3Arule%7D%3A%5Cquad%20%5Cfrac%7Ba%7D%7Bc%7D%2B%5Cfrac%7Bb%7D%7Bc%7D%3D%5Cfrac%7Ba%2Bb%7D%7Bc%7D)
![=\frac{36+15}{10}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B36%2B15%7D%7B10%7D)
![=\frac{51}{10}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B51%7D%7B10%7D)
Therefore, total wrapping papers Serena and her grandmother = 51/10
To find the mean we add the numbers and divide by the number of options.
6+7+11/3=6
They are each 18.2 try that I think it’s what it is