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Salsk061 [2.6K]
3 years ago
7

Please answer numbers 13 14 and 15

Mathematics
1 answer:
AlekseyPX3 years ago
3 0
13. it's > because 18,000g = 18kg and that's greater
14.8.456L = 8456ml so it's < 9L
15.2m = 200cm which is < 275cm
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Mr. McKay wrote an algebra test with a total of 15 questions consisting of multiple choice and short response style questions. M
tankabanditka [31]

Step-by-step explanation:

x = number of multiple choice questions

y = number of short response questions

x + y = 15

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=>

x + 2y = 20

let's subtract the first from the second equation :

x + 2y = 20

- x + y = 15

--------------------

0 y = 5

x + y = 15

x + 5 = 15

x = 10

to graph you need to consider both equations as linear functions. and you need to transform them into e.g. a slope intercept form : y = ax + b

a is the slope, b is the y- intercept.

x + y = 15

transforms to

y = -x + 15

this line goes e.g. through the points (0, 15) and (1, 14).

and

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transforms to

2y = -x + 20

y = -x/2 + 10

this line goes e.g through (0, 10) and (2, 9).

the crossing point of both lines is the solution and should therefore be the point (10, 5) as calculated above.

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2 years ago
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andrezito [222]

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Step-by-step explanation:

The shape of Samantha's fish tank is rectangular. The volume of the rectangular fish tank would be expressed as LWH

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W represents the width of the tank.

H represents the height of the tank.

The tank has a height of 2.6 ft, a width of 2.1 ft, and a length of 3.9 ft.

This means that the volume of the fish tank would be

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= 21.294 ft^3

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Which number line model represents the expression -4+7.5?
Alex787 [66]

Answer:

A)

Step-by-step explanation:

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I need some guidance and help on this please.
MatroZZZ [7]
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Answer 10,11 and 12 for 100 points
geniusboy [140]
10) 7(2m+3)
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3 0
3 years ago
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