Perimeter = (20 + 2x) mm.
Step-by-step explanation:
The octopus pupil has length 20 mm and the expression for its area is given by (20x - 200) square mm.
If the width of the octopus pupil is w, then 20w = 20x - 200
⇒ w = (x - 10) mm.
Therefore, the expression for its perimeter is 2(Length + Width) = 2 ( 20 + x - 10) = 2( 10 + x) = (20 + 2x) mm. (Answer)
The answer is 64 took the test
Answer:
Its to multiply the numerators by each other and the denominators by each other
Step-by-step explanation:
If adding and subtracting fractions is about finding the least common denominator
dividing fractions is to keep the first fraction,multiply and reverse the second fraction,so dividing is pretty similar to multiplying but just switching the divide sign with a multiplication sign and reversing the second fraction from numerator/denominator to denominator/numerator
and there is always a big difference if you multiply/divide or add/subtract
Answer:
1 and 15
Step-by-step explanation:
8-7=1
8+7=15
Divide both sides by negative two
the answer is x = -1
