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Elodia [21]
3 years ago
11

What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?

Mathematics
2 answers:
Alexxx [7]3 years ago
7 0

Answer:the answer is 21.6.


Step-by-step explanation:


Leno4ka [110]3 years ago
3 0
To calculate the perimeter, consider each side separately.

Right side: This is easiest since it's a vertical line - it's 7 units long.

Top side: If you look carefully, this side is really the hypotenuse of a triangle that is 1 unit tall and 6 units long. Using the Pythagorean Theorem, you can calculate the length of the hypotenuse to be 1^2 + 6^2 = c^2 --> c = 6.1

Left side: just like the top side, this side is the hypotenuse of a triangle that is 6 units tall and 6 units long. Pythagoras again: 6^2 + 6^2 = c^2 --> c = 8.5

Add these three numbers to get the perimeter: 7 + 6.1 + 8.5 = 21.6
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the central angle of a sector is 60 degrees and the area of the circle is 144 pi. What is the area of the sector
rjkz [21]
The radius of the circle,
Pi × r² = 144 pi
r ² = 144
r = 12

The area of the sector,
60 / 360 × pi × 12² = 144/6 × 22/7 or 3.142
= 75. 43 or 24 pi
7 0
3 years ago
Which of the following is a scaled copy of figure A.
bonufazy [111]

Answer:

D

Step-by-step explanation:

D is 2x bigger than A, therefore is a scaled copy.

7 0
2 years ago
The first AMC 8 was given in 1985 and it has been given annually since that time. Samantha turned 12 years old the year that she
Lorico [155]
I would start like this: which year was the seventh AMC 8??

the first was in 1985
The second: 1986
3: 1987
4: 1988
5: 1989
6: 1990
7: 1991

so seventh AMC 8 took place in 1991.
she was then 12, so we can subtract this age from 1991:

1991-12=1979

so she was born in 1979!




5 0
3 years ago
each face of cabinet 413S is in the shape of a rectangle. What is the volume of Model 413S in cubic feet? Dimension are 24 by 72
lbvjy [14]
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7 0
3 years ago
I WILL MARK BRAINIEST<br> I got one correct there should be about one more that’s also right
Lesechka [4]

So essentially an adjacent angle is when two angles have a common side and a common vertex.

So knowing that we can determine from the picture all the adjacent angles:

D) <2 and <3 are adjacent angles

E) <1 and <3 are adjacent angles

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I hope this helps.

7 0
3 years ago
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