Answer:
The answer is 60
Step-by-step explanation:
I am going to assume that A and a are the same variable. For future reference, a and A wouldn't be considered the same variable so be careful with that :)
We can first plug in 2 for a and 4 for b
4(2) + 2(4^2) - 2(2 - 3(4))
8 + 2(16) - 2(2 - 12)
8 + 32 - 2(-10)
8 + 32 - (-20)
8 + 32 + 20
60
Answer:
Step-by-step explanation:
1) length = x m
breadth = x/2 m
Area of rectangular floor = 32 square m
![length * breadth = 32\\\\x*\dfrac{1}{2}x = 32\\\\\\x^{2}=32*2\\\\\\x^{2} = 64\\\\x=\sqrt{64}=\sqrt{8*8}\\\\x = 8 \ m](https://tex.z-dn.net/?f=length%20%2A%20breadth%20%3D%2032%5C%5C%5C%5Cx%2A%5Cdfrac%7B1%7D%7B2%7Dx%20%3D%2032%5C%5C%5C%5C%5C%5Cx%5E%7B2%7D%3D32%2A2%5C%5C%5C%5C%5C%5Cx%5E%7B2%7D%20%3D%2064%5C%5C%5C%5Cx%3D%5Csqrt%7B64%7D%3D%5Csqrt%7B8%2A8%7D%5C%5C%5C%5Cx%20%3D%208%20%5C%20m)
Length = 8 m
Breadth =8/2 = 4 m
Perimeter = 2*(length + breadth) = 2*(8 + 4)
= 2*12
= 24 m
2) Perimeter of square = 12 cm
Side of a square = perimeter ÷ 4 = 12 ÷ 4 = 3 cm
Area =side *side = 3*3 = 9 cm²
3) Perimeter of square field = 60 m
Side = Perimeter ÷ 4 = 60 ÷4 = 15 m
Area of square = 15 * 15 = 225 m²
4) Perimeter of rectangle = 28 cm
breadth = (Perimeter ÷ 2) - length
= (28 ÷2) - 8
= 14 - 8
Breadth = 6 cm
Area of rectangle = 8 * 6 = 48 cm
Answer:
A. 3x
B. 8y
C. -12
Step-by-step explanation:
Combine like terms. Same variable raiased to the same exponent.
To calculate the mean weights of the potatoes, the weights are all added and divided by the number of potatoes.
The sum of all the potatoes - <span>5 + 8 + 9 + 11 + 7 + 7 + 8 + 9 + 12 + 7 = 83
the number of potatoes - 10
we have to divide the sum of weights by 10
Mean weight = 83/10 = 8.3
Rounded off to the nearest ounce - 8 </span>ounces
105 degree , I think but not sure