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guapka [62]
3 years ago
9

Brian says that ABCD is a right triangle. Is he correct? (Do the numbers 1 point

Mathematics
1 answer:
Amanda [17]3 years ago
8 0

Answer:

No

Brain is wrong, BCD is not a right triangle

Neither is ABCD for that matter, it isn't even a triangle :)

Step-by-step explanation:

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What is √25 times√81 times 0?
deff fn [24]
Well, when any equation has a 0 multiplied into it, the answer will be zero.
Anyway, √25 equals 5 
√81 equals 9 
9*5 = 45
45 * 0 = 0
<span>I hoped I helped!</span>
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Isabella needs to order some new supplies for the restaurant where she works. The restaurant needs at least 439 knives. There ar
jekas [21]

Answer:14

Step-by-step explanation:

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please help me with this geometry homework. Oh and also I'm looking for a tutor a couple days a week so if you know anyone messa
sergij07 [2.7K]
The sum of the interior angles of an n gon is <span> (n-2)*180
the measure of each interior angle is </span><span>(n-2)*180/n
the measure of each individual exterior angle of an ngon is 360/n
all exterior angles add to 360

1. sum of 15 gon is
(15-2)*180=13*180=2340 degrees

2. deca is 10
(10-2)*180/10=8*18=144 degrees

3. dodecagon is 12 sides
360/12=30 degrees

4. 4 sides, those are exterior angles, so they add to 360
4r+7r+8r+5r=360
24r=360
r=15 degrees

5.
pentagon or 5 sides
sum of internal is (5-2)*180=3*180=540 degrees
540=4z+5z+3z+5z+3z
540=20z
27 degrees=z
3z=81=A=D
4z=108=B
5z=135=C=E

6. (n-2)*180
20 gon
(20-2)*180=18*180=3240 degrees

7. exterior angles add to 360
4y+2y+4y+6y=360
16y=360
y=22.5
2y=45 degrees
4y=90 degrees
6y=135 degrees

8. interior angles of 4 gon sum is
(4-2)*180=2*180=360
2n+6n+5n+2n=360
15n=360
n=24
2n=48
5n=120
6n=144

9.
6gon
(6-2)*180=4*180=720
90+90+x+x+22+x+x+22=720
224+4x=720
minus 224 both sides
4x=496
divide by 4
x=124


10., exterior angle of pentagon, 5 gon
360/5=72=x

11.
(n-2)*180/n=4*(360/n)
times both sides by n
(n-2)*180=4*360
divide both sides by 180
n-2=4*2
n-2=8
n=10
10 sides

12.
area of octogon of side is
</span>2(1+√2)s² where s is the side length
given, 12=side length
A=2(1+√2)12²
A=2(1+√2)144²
A=288(1+√2)
A=288+288√2 square cm
5 0
3 years ago
Simplify this expression: 19 – (–8) – (–14) = ?
Ivahew [28]
Answer is B
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3 0
4 years ago
3y+4y+6=20 can someone please help me with this
Xelga [282]

3y+4y+6=20

(3y+4y)+(6)=20

(Combine Like Terms)

7y+6=20

7y+6=20

Subtract 6 from both sides.

7y + 6 − 6 = 20 − 6

7y = 14

Divide both sides by 7.

7y/7 = 14/7

y = 2

7 0
3 years ago
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