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3 years ago

15

Deon finished his math assignment in 2/5 hours. Then he completed his chemistry assignment in 1/2 hours. How much more time did

Deon spend on his chemistry assignment?

1 answer:

ipn [44]3 years ago

7 0

Answer:

Deon spent 1/10 of an hour more on chemistry than on math

Step-by-step explanation:

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Nadia plans to paint her jewelry box. The box is shaped like a rectangular prism with the dimensions

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Answer:

$132\ in^{2}$ is closest to the total surface area of the box

Step-by-step explanation:

we know that

The surface area of the box is equal to

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P is the perimeter of the base

H is the height of the box

we have

$L=7\frac{3}{4}\ in=\frac{7*4+3}{4}=\frac{31}{4}\ in$

$W=3\frac{1}{4}\ in=\frac{3*4+1}{4}=\frac{13}{4}\ in$

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<em>Find the area of the base B</em>

$B=LW$

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<em>Find the perimeter of the base P</em>

$P=2(L+W)$

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$P=2(\frac{44}{4})=22\ in$

<em>Find the surface area</em>

$SA=2(\frac{403}{16})+22(\frac{31}{8})$

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