Equal in what? Cm, m, mm ?
Answer:
35cm²
Step-by-step explanation:
Area = trapezium + triangle
Trapezium = ½×(8+4)×2 = 12
Triangle = ½×8×5.75 = 23
Area = 12+23 = 35 cm²
Answer:
![7a^{2} +20](https://tex.z-dn.net/?f=7a%5E%7B2%7D%20%2B20)
Step-by-step explanation:
Given: Area of one cupboard= ![3a^{2} -5y+15](https://tex.z-dn.net/?f=3a%5E%7B2%7D%20-5y%2B15)
Area of second cupboard= ![4a^{2} +5y+5](https://tex.z-dn.net/?f=4a%5E%7B2%7D%20%2B5y%2B5)
As per question, carpenter need to determine the amount of plywood required for two cupboard.
Lets, add the area of two cupboard to know the amount of plywood required.
∴
- Area of first cupboard.
- Area of second cupboard.
Adding both the area;
![(3a^{2} -5y+15)+(4a^{2} +5y+5)](https://tex.z-dn.net/?f=%283a%5E%7B2%7D%20-5y%2B15%29%2B%284a%5E%7B2%7D%20%2B5y%2B5%29)
Now, opening the parenthesis
![3a^{2} -5y+15+4a^{2} +5y+5](https://tex.z-dn.net/?f=3a%5E%7B2%7D%20-5y%2B15%2B4a%5E%7B2%7D%20%2B5y%2B5)
we will get
.
∴ Total area of cupboard= ![7a^{2} +20](https://tex.z-dn.net/?f=7a%5E%7B2%7D%20%2B20)
Answer:
D
Step-by-step explanation:
5x - 14y = -39
Change it to slope intercept form by solving for y.
subtract 5x from both sides first.
5x - 5x -14y = -39 -5x
The new equation is
-14y = -5x - 39
Divide each term by -14.
-14y/-14 = -5x/-14 -39/-14
The equation in slope intercept form is
y = 5/14x + 2.78
This is the only equation that has the most reasonable (positive) slope and the y-intercept of 2.78. The y-intercept is approximately half way between 5 and 0 and 2.78 satisfies that.