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Aleonysh [2.5K]
3 years ago
12

Please help 30 points !!

Mathematics
2 answers:
inysia [295]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Dimas [21]3 years ago
5 0

Step-by-step explanation:

Is it multiple choice or just one?

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Emerson swims 1/2 a miles every 1/4 of an hour. How far can she swim in one hour?
algol13

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he swims 1/2 miles in 1/4 hours

multiply both them by 4

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2 miles in 1 hour

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Use the substitution method to solve the system of equations. Choose the correct ordered pair.
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Step-by-step explanation:

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Which expression has the same value as9
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B because it rounds
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4 years ago
A gift box has a volume of 450 cubic inches. The width of the box is 4 inches less than the length. The height is twice the widt
VashaNatasha [74]

Answer:

width = 5 in

length = 5+4=9 in

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Step-by-step explanation:

A gift box has a volume of 450 cubic inches.

Let 'w' be the width of the box

The width of the box is 4 inches less than the length.

length = w+4

The height is twice the width.

height = 2 \cdot width

height = 2w

Volume of box = length times width times height

V=(w+4)(w)(2w)

450=(w+4)(w)(2w)

450=2w^3+8w^2

2w^3+8w^2-450=0

\quad 2\left(w-5\right)\left(w^2+9w+45\right)=0

w-5=0

w=5

\quad\left(w^2+9w+45\right)=0, this gives two complex values

so width = 5

length = 5+4=9

height = 2(5)= 10

5 0
3 years ago
Kim is reading a book with 380 pages. She read 20 pages each day until she reached Part 2 of the book. Part 2 of the book is 160
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Answer:

11 days

Step-by-step explanation:

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