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3 years ago

The variables x and y vary. Write an equation relating x and y. Then find y when x=-2. x=7, y=2.

Mathematics

1 answer:

Sphinxa [80]3 years ago

6 0

Answer:

<h2>equation x=y</h2>

Step-by-step explanation:

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4 years ago

An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

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3 years ago

PLEASE HELP I WILL GIVE BRAINLIEST!!

inysia [295]

Answer:

43.96

Step-by-step explanation:

To find Circumference the formula is

2*3.14*R=C

replace R with your radious which is 7

2*3.14*7=43.96

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3 years ago

Help plz!!!!!!!!! I need help please!!!

KengaRu [80]

8. commutative property of multiplication
9. associative property of multiplication
10.<span>Multiplicative </span><span> Property of Zero
11.</span><span>Identity Property of Multiplication
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13.associative property of multiplication
14.<span>Identity Property of Addition
15. </span>commutative property of addition
16. commutative property of multiplication
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18.Identity Property of Multiplication
19.associative property of addition
20.Identity Property of Addition
21.<span>Multiplicative </span> Property of Zero
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3 years ago