3 years ago

I need help with numbers 16-19 thank you :)

1 answer:

3 0

I think I can help with a few...
16. They are equal because of distributive property.
18. 12*5 and 3/8 -> 12/1*43/8 -> 516/8 -> 129/2 -> 64.5
19. Everything is right until the last step, where it should be 6 and 2/3.

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3 years ago

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A rectangle has a height of b3 + b2 and a width of b2 + 76 + 4.

zaharov [31]

Answer:

The area is:

${b}^{5} + 8 {b}^{4} + 11 {b}^{3} + 4 {b}^{2}$

Step-by-step explanation:

To find the area of a rectangle, multiply the width by the height (I'll be using x for b, as it is easier when writing the equations):

$a = ({x}^{ 3} + {x}^{2} )( {x}^{2} + 7x + 4) \\ a = {x}^{5} + 7{x}^{4} + 4 {x}^{3} \\ + {x}^{4} + 7 {x}^{3} + 4 {x}^{2} \\ a = {x}^{5} + 8 {x}^{4} + 11 {x}^{3} + 4 {x}^{2}$