3 years ago

Need help with this one as well

Mathematics

1 answer:

Irina-Kira [14]3 years ago

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7.5*10*3+6*4*2=273

3 rectangles + 2 triangles (1/2b times height)

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3 years ago

A) Find a polynomial, which, when added to the polynomial 5x2–3x–9, is equivalent to: 18

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a) $-5x^{2}+3x+27$

b) $-5x^{2}+3x+9$

Step-by-step explanation:

a) Let the required polynomial be p(x).

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i.e. p(x) = 18 $-5x^{2}+3x+9$

i.e. p(x) = $-5x^{2}+3x+27$

b) Let the required polynomial be q(x).

We have the relation, $5x^{2}-3x-9$ + q(x) = 0

i.e. q(x) = 0 $-5x^{2}+3x+9$

i.e. q(x) = $-5x^{2}+3x+9$

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4 years ago

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Her original savings were $800.

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