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Gnom [1K]
3 years ago
14

What property is this

Mathematics
2 answers:
Alexxandr [17]3 years ago
8 0

I think this is the associative property of multiplication.

madreJ [45]3 years ago
6 0

The x and y swapped places so it is commutative property.

NOTE: Associative property is when the parentheses change partners.

Answer: Commutative Property

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Explain how you know...?
Anestetic [448]

Answer:

60

Step-by-step explanation:

Because 7.7^2 equals 60,

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2 years ago
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Read 2 more answers
Sketch the curve with the given vector equation. Indicate with an arrow the direction in which t increases. r(t) = 4 cos(t)i + 4
slega [8]

Answer:

The equation to this question is "x^2+y^2=16"

Step-by-step explanation:

Given value:

\to  r(t) = 4 \cos (t)i + 4 sin(t)j + k\\where \\\\\to x(t)= 4 \cos t\\\to y(t) = 4 \sin t\\\to z(t)=1\\

\to x^2+y^2= 16 \cos^2 t +16 \sin^2 t\\\\\to x^2+y^2= 16 (\cos^2 t +\sin^2 t)\\\\\therefore (\cos^2 t +\sin^2 t =1)\\\\\to x^2+y^2= 16 (1)\\\\\to x^2+y^2= 16\\\\\to z=1

 So, the curve r(t) = 4 \cos (t)i + 4 sin(t)j + k is basically a circle, which is defined in the attachment file.

7 0
3 years ago
2x + y = -4<br> 2x + 3y = 4
kirill115 [55]

Answer: x=4 ; y=<u> -4</u>

                            3

Step-by-step explanation:

2x + y = -4 .(-3)

2x + 3y = 4

-6x-3y=12

<u>2x + 3y = 4</u>

4x=16

x= <u>16</u>

    4

x=4

2x + 3y = 4

2.4+3y=4

8+3y=4

3y= -8+4

y=<u> -4</u>

   3

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Enrollment at a school last year was 1220 this year the student population decreased by 10% how many total students are attendin
Umnica [9.8K]
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