Answer:
-4y^3 + 4y^2 -6y + 25
Step-by-step explanation:
Combine like terms:
(-4y^3-5y+16)
+ (4y^2 - y +9)
----------------------------
-4y^3 + 4y^2 -6y + 25
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Square root 10 times 36 root n
divide total miles by time:
157.5 / 2.5 = 63 miles per hour
Answer:
Step-by-step explanation:
I'll help you just let me figure this out real quick, do you still want the answer?
Answer:
a) Perimeter = 20.5 Inches
Area is 15 Sq Inches
b) Perimeter is 61.4 Cms
Area is 210 Sq cm
c) Perimeter is 22 yards
Area is 21 Sq Yards
Step-by-step explanation:
a) Perimeter = sum of all the sides
= 8+7.5+5
=20.5
Perimeter = 20.5 Inches
Area of Triangle =![\frac{1}{2} \times height \times Base](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%20height%20%5Ctimes%20Base)
Base = 7.5 In
Height = 4 In
![A = \frac{1}{2} \times 4 \times 7.5](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%204%20%5Ctimes%207.5)
![A = 2 \times 7.5](https://tex.z-dn.net/?f=A%20%3D%202%20%5Ctimes%207.5)
![A = 15](https://tex.z-dn.net/?f=A%20%3D%2015%20)
Hence Area is 15 Sq Inches
b) Perimeter = Sum of all the sides
P=13+23+13.4+12
P=61.4
Perimeter is 61.4 Cms
Area of trapezium = ![\frac{1}{2} \times height \times (sum \ of \ parallel \ sides)](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%20height%20%20%5Ctimes%20%28sum%20%5C%20of%20%5C%20parallel%20%5C%20sides%29)
![A= \frac{1}{2} \times 12 \times (12+23)](https://tex.z-dn.net/?f=A%3D%20%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%2012%20%5Ctimes%20%2812%2B23%29)
![A= 6 \times 25](https://tex.z-dn.net/?f=A%3D%206%20%5Ctimes%2025)
![A=210](https://tex.z-dn.net/?f=A%3D210)
Area is 210 Sq cm
c) Perimeter = Sum of all the sides
P = 7+4+7+4 ( as Opposite sides are equal in a parallelogram
P = 22
Perimeter is 22 yards
Area of a parallelogram = ![base \times height](https://tex.z-dn.net/?f=base%20%5Ctimes%20height%20)
![A= 7 \times 3](https://tex.z-dn.net/?f=A%3D%207%20%5Ctimes%203)
![A = 21](https://tex.z-dn.net/?f=A%20%3D%2021)
Area is 21 Sq Yards