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3 years ago

(3d+3)(2dsquared+5d-2)

2 answers:

8 0

{{ NOTE: ^2 means squared }}

(3d + 3) (2d^2 + 5d - 2)

Separate the first bracket to multiply by the second:
3d (2d^2 + 5d - 2) + 3 (2d^2 + 5d - 2)

Multiply out the brackets:
6d^3 + 15d^2 - 6d + 6d^2 + 15d - 6

Tidy up:
6d^3 + 21d^2 + 9d - 6

Nat2105 [25]3 years ago

3 0

Work inside the brackets first, and then you can multiply the two equations if they are able to be mutiplied...

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4 years ago

The base of an isosceles triangle is one and a half times the length of the other two sides.A smaller triangle has a perimeter t

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Answer:

Perimeter of the smaller triangle = 1.75x

Step-by-step explanation:

Let the two equal sides of an isosceles triangle = x

Therefore, length of the base = $(1\frac{1}{2})x$

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= $\frac{5x}{2}$

Since, smaller triangle has a perimeter that is half the perimeter of the larger triangle,

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= x + $\frac{x}{2}+\frac{x}{4}$

= $\frac{3}{2}x+\frac{x}{4}$

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Therefore, expression that represents the perimeter of the smaller triangle is (1.75x)

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3 years ago

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3 years ago

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a/(3a/4)

a(4/3a)

a is 4/3 greater, so it does indicate a 33(1/3)% increase. Maybe they just want the fraction saying it is 1/3 greater or the difference of 0.25a

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