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4 years ago

Polygon The sum of the interior angles of the 10-sided polygon on the left is °

Mathematics

2 answers:

12345 [234]4 years ago

8 0

There are always 2 less interior angles then there are sides regarding polygons.

Each interior angle is 180 degrees in a polygon. So we have:

(10-2) x 180

8 x 180 = <em>1440</em>

Nata [24]4 years ago

5 0

Answer:

1440

Step-by-step explanation:

S = (n - 2)*180

Where s is the sum and n is the number of sides

S = (10-2) * 180

S = 8*180

S =1440

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When two fractions refer to the same whole explain why the fraction with a lesser denominator has larger pieces than the fractio

Genrish500 [490]

Because the fraction with the lesser denominator divides the whole into less pieces that are essentially larger then the fraction with a greater denominator who divides the whole into more pieces, but smaller.

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3 years ago

There are 324 students in Jefferson middle school. 5/12 of the students are 7th graders. 1/4 of the students are 9th graders. Th

Greeley [361]

Answer:

They are 108 8th graders at Jefferson Middle School

Step-by-step explanation:

324 x 5/12 = 135 7th graders

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3 years ago

A trapezoid can be a parallelogram

Ksenya-84 [330]

Answer:

A trapezoid can be called a parallelogram when it has more than one pair of parallel sides.

Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the value of x and y for the equation x+y5 7x+9y=6

Nastasia [14]

Answer:

$x = \frac{39}{2}$

$y = -\frac{29}{2}$

Step-by-step explanation:

Given

$x + y= 5$ --- (1)

$7x + 9y = 6$ ---- (2)

Required

Find x and y

Make x the subject in (1)

$x + y= 5$

$x = 5 - y$

Substitute 5- y for x in (2)

$7x + 9y = 6$

$7(5 - y) + 9y = 6$

Open bracket

$35 -7 y + 9y = 6$

Collect like terms

$-7y + 9y = 6 - 35$

$2y = -29$

Divide both sides by 2

$y = -\frac{29}{2}$

Substitute this for y in $x = 5 - y$

$x = 5 - (-\frac{29}{2})$

$x = 5 +\frac{29}{2}$

L.C.M

$x =\frac{10+29}{2}$

$x = \frac{39}{2}$

6 0

3 years ago

I need both answers now!

Fiesta28 [93]

Part A:
Answer Is (B)

Part B:
Answers are: (C and E)

Hope this helps.

8 0

3 years ago