C. 2/3; reduction
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Answer:
Length = 12cm
Step-by-step explanation:
The dimensions of the recatngle is:
- width → x
and
- length → x+7
The area of a rectangle follows the formula: length*width
Meaning: x * (x + 7) = 60
Expand that: x^2 + 7x = 60
Rearragne the equation and factorise it
(x-5)(x+12) = 0
The width cannot be a negative value, so the answer must be 5.
Remember that x was the width and the length is the width add the 7.
So the length is 12 cm.
in form of multiplication is
.
<u>Step-by-step explanation:</u>
We know that factors are the numbers that are being multiplied together . As 6532*7 = 45724 .Here 6532 & 7 are the factors and 45724 is product of the factors .
Here , we need to convert to the product of multiplication
a^2-b^2-4b-4 or ,
:
⇒
We know by identity that , ![p^2-q^2 = (p-q)(p+q)](https://tex.z-dn.net/?f=p%5E2-q%5E2%20%3D%20%28p-q%29%28p%2Bq%29)
⇒ ![(a-b)(a+b)-4b-4](https://tex.z-dn.net/?f=%28a-b%29%28a%2Bb%29-4b-4)
Taking common term out as -4 :
⇒ ![(a-b)(a+b)-4(b+1)](https://tex.z-dn.net/?f=%28a-b%29%28a%2Bb%29-4%28b%2B1%29)
Therefore ,
in form of multiplication is
.
Answer:
surface area of cylinder is 126cm²
Step-by-step explanation:
Height of a cylinder is 8cm
Radius of a cylinder is 2cm
surface area = ?
surface area of cylinder= 2πr(r + h)
=2×22/7×2(2+8)
=44/7×2(10)
=44/7×20
=880/7
=125.71
Answer:
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Step-by-step explanation: