3 years ago

Write an expression that can be used to find 4x275 using mental math and properties of numbers

Mathematics

1 answer:

Sindrei [870]3 years ago

3 0

(4x200) + (4x70) + (4x5)

Distributive property of multiplication

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The function f(x) = -(x-3)2 + 9 can be used to represent the area of a rectangle with a perimeter of 12 units, as a function of

pashok25 [27]

Answer:

Maximum area = 9 sq units

Step-by-step explanation:

$f(x)=-(x-3)^2+9$

which represents the area . As it is a quadratic equation it represents the parabola . And the vertex of the parabola will maximum area of for some value of x

let f(x) = y

$y=-(x-3)^2+9$

$(x-3)^2=-(y-9)$

Comparing it with the standard equation of parabola

$y=(x-h)^2+k$

we get h=3 and y=9

where (h,k) is the vertex (3,9)

Hence the maximum area of the rectangle will be 9

6 0

4 years ago

Which is a multiple of 15 3,5,55,60

bazaltina [42]

Remember that multiples are numbers that can be divided by a number without a remainder so in this case you could add 15 by 15 to find what number in this set is a multiple of 15.

$15+15=30$