Answer:
Elise's number is 25.
Step-by-step explanation:
-4(x - 13) = -48
-4x + 52 = -48
-52 -52
------------------------
-4x = -100
/-4 /-4
-------------------------
x = 25
42---number of students with blue eyes blond hair
5--students with grey eyes brown hair
6--difference of the number of students with grey eyes and brown hair ...
14-- with the last one standing
Slope= 2/3
Explanation- adding 6y on both sides and subtracting 12 on both sides of eq, 12 + 6y -12=4x+6y-6y-12
6y = 4x-12
Divide by 6 on both sides of eq, we get y=4/6 x -12/6
y=2/3 x-2
Answer:
<em><u>1 and 5</u></em>
Step-by-step explanation:
The squares have a side length of 10 and 1 square side is the radius of the half-circles. Since there are two half-circles, find the circumference for one full circle:
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
Insert the radius:
![r=10\\C=2\pi *10](https://tex.z-dn.net/?f=r%3D10%5C%5CC%3D2%5Cpi%20%2A10)
Simplify pi:
![C=2*3.14*10](https://tex.z-dn.net/?f=C%3D2%2A3.14%2A10)
Simplify multiplication:
![C=6.28*10\\C=62.8](https://tex.z-dn.net/?f=C%3D6.28%2A10%5C%5CC%3D62.8)
The circumference of the circles is 62.8. Now find the perimeter of the exposed squares with side length 10. There are 4 exposed sides, which equals one square. Find the perimeter:
![P=10+10+10+10\\P=10+10+20\\P=10+30\\P=40](https://tex.z-dn.net/?f=P%3D10%2B10%2B10%2B10%5C%5CP%3D10%2B10%2B20%5C%5CP%3D10%2B30%5C%5CP%3D40)
Add the perimeter of the circle and the square together:
![P=62.8+40=102.8](https://tex.z-dn.net/?f=P%3D62.8%2B40%3D102.8)
Now see which of the options gives you the perimeter:
1.
****
2. ![unavailable](https://tex.z-dn.net/?f=unavailable)
3. ![120+20\pi =182.8](https://tex.z-dn.net/?f=120%2B20%5Cpi%20%3D182.8)
4. ![300+100\pi =614.2](https://tex.z-dn.net/?f=300%2B100%5Cpi%20%3D614.2)
5.
****
Finito.