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3 years ago

In a trapezoid, three interior angles measure 80°, 100°, and 140°. What is the measure of the fourth interior angle.

Mathematics

2 answers:

Hunter-Best [27]3 years ago

6 0

The fourth angle will be 40 degrees

VLD [36.1K]3 years ago

3 0

All four-sided figures' interior angles will always add up to 360*. Therefore, the final angle is 40*, found by adding up all the values you have and subtracting them from 360.

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Factorise (x+y)^3- (x^3+y^3) plzzz answer

lilavasa [31]

Answer:

$\huge \boxed{ \boxed{ \tt 2xy(x + y)}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

factoring
PEMDAS

<h3>tips and formulas:</h3>

(a+b)³=a³+3a²b+3ab²+b³
a³+b³=(a+b)(a²-ab+b²)

<h3>let's solve:</h3>

$\sf \: use \: 2nd \: formula \: to \: simplify : \\ \sf(x + y {)}^{3} - (x + y)( {x}^{2} - xy + {y}^{2} )$
$\sf factor \: out \: (x + y) : \\ (x + y )\{(x + y)^{2} - ( {x}^{2} - xy + {y}^{2} \}$
$\sf simplify : \\ (x + y {)} \{ {x}^{2} + 2xy + {y}^{2} - {x}^{2} + xy - {y}^{2} \}$
$\sf collect \: and \: combine \: like \: terms : \\ (x + y) \{2xy \}$
$\sf \: rewrite : \\ 2xy(x + y)$

and

we are done

5 0

3 years ago

Just answer plz its 20 points

Deffense [45]

Answer:

x=14.5

Step-by-step explanation:

since we know the sum of a triangles interior angles equal 180, we can subtract 66 from 180

180-66=114

6x-8+2x+6=114 - combine like terms

8x-2=114 - add 2 to both sides

8x=116 - divide by 8

x=14.5

angle a= 79

angle n=35

3 0

2 years ago

What is the median of the data set:348,349,354,355,357,359,360,367,37,381,386,388,388

r-ruslan [8.4K]

Answer:

Step-by-step explanation:

median is the middle value in an ordered list of numbers.

359 is the middle value of median data.

Hope this helps!

Thanks!

7 0

2 years ago

Read 2 more answers

Round 126 to the nearest ten

Iteru [2.4K]

The answer is 130 since 6 is above five, you must round up to the nearest ten, 30.

3 0

3 years ago

12. A grocery store collects donated canned

AveGali [126]

Answer:

For the last three years, the National Post has greeted the yuletide season by publishing the video above. With a simple message of maximizing charitable giving by donating money to the food bank instead of canned goods, it is one of our most popular videos of all time, reaching virtually every corner of the English-speaking world.

Step-by-step explanation:

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2 years ago