Answer:
Step-by-step explanation:
Triangle is a polygon that has 3 sides.
1)Equilateral triangle means all the three sides has equal measurements.
2)Isosceles triangle means two sides has equal measurements.
3)Scalene triangle means all the three sides has different measurements
Answer:
x = -1 and y = 6
Step-by-step explanation:
y = x + 7
5x + 2y = 7
y - x = 7.............(1)
2y + 5x = 7......(2)
multiply equation (1) by 2
2y - 2x = 14
2y + 5x = 7
subtract equation (2) from (1)
2y - 2x = 14
- 2y + 5x = 7
-------------------
0 -7x = 7
-7x = 7
divide both sides by 7
-7x = 7
----- ----
7 7
-x = 1 multiply through by minus sign
x = -1
substitute x = -1 into equation (1)
y - x = 7
y - (-1) = 7
y + 1 = 7
y = 7 - 1
y = 6
For the first shipment, 5r+4h=62.
For the second shipment, 10r+3h=84.
pick either equation and solve for r, them plug this back into the other equation and solve for h, you should then be able to find the price per harmonica and per recorder. Comment if you need more help.
Answer:
cubic feet
Step-by-step explanation:
Let r, h denotes radius and height of the tree's trunk.
Radius of the tree's trunk = 2 feets
Height of the tree's trunk = 15 feets
The tree's trunk is in the shape of a cylinder.
Volume of cylinder (tree's trunk) ![=\pi r^2h](https://tex.z-dn.net/?f=%3D%5Cpi%20r%5E2h)
Put ![r=2\,,\,h=15](https://tex.z-dn.net/?f=r%3D2%5C%2C%2C%5C%2Ch%3D15)
Volume of the tree's trunk
cubic feet
Put ![\pi=\frac{22}{7}](https://tex.z-dn.net/?f=%5Cpi%3D%5Cfrac%7B22%7D%7B7%7D)
So,
Volume of the tree's trunk
cubic feet