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Anon25 [30]
3 years ago
8

A scientific model doesn’t need to be something physical. It can also be a mathematical __________

Mathematics
2 answers:
love history [14]3 years ago
5 0
Equation, a mathematical equation.
MAVERICK [17]3 years ago
4 0

Answer:

2+4

Step-by-step explanation:

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- Let y represent the width of a rectangle and let x represent the rectangle's lengu.
valentina_108 [34]

Answer:

Length: 21 cm and Width:  6cm

Step-by-step explanation:

Let y be the width and x length of the rectangle. We know:

x = 4y -3 -------- eq. 1

54 = 2x + 2y    (Perimeter of the rectangle) ------- eq.  2

Substitute equation 1 in equation 2:

54 = 2(4y-3) + 2y\\54 = 8y - 6 + 2y\\54 + 6 = 8y + 2y\\60 = 10 y\\\\\frac{60}{10}= y\\y = 6

Using the value of y, we find x.

x = 4y - 3\\x = 4(6) -3\\x= 24 - 3\\x = 21

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3 years ago
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3 years ago
2/3 - 2/9 what is the answer ???
riadik2000 [5.3K]

Answer:

0.44

Step-by-step explanation:

2/3 - 2/9 = 0.44

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