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otez555 [7]
3 years ago
10

Please helppp!!!

Mathematics
1 answer:
coldgirl [10]3 years ago
7 0

Answer:

The perimeter is 27 km

The area is 21 km^2

Step-by-step explanation:

The perimeter of a triangle will just be all of the sides added up.

12 + 9 + 6 = 27 km

The area of a triangle is:

A = 1/2 * base * height

The base is 6 km, and the height is 7 km. Substituting the values in and solving, we get:

A = 1/2 * 6 * 7

A = 3 * 7

A = 21 km^2

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Llana [10]

Roberto paints 1/6 of a room in 1 hour.
Julio paints1/8 of a room in 1 hour.

Working together, they paint (1/6 + 1/8) = (4/24 + 3/24) = 7/24 room per hour.

The reciprocal unit rate is  24/7 hour per room = <em>3-3/7 hours</em> per room.


6 0
3 years ago
14/7x8-35/7x2 help me simplify using order of operations
zlopas [31]
4116 first answer 7 times 8 subtract 35.Second multiply by 14.Lastly solve 7 times 2 and multiply it by what you got multiplying 14.
3 0
3 years ago
I need help please with step by step it would help me a lot
pav-90 [236]

Answer:

Domain: (-infinity, +infinity) since you can pick any x values.

Range: [0, +infinity) since it does not go below the x axis.

Step-by-step explanation:

The graph is a parabola given by y=x^2

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4 0
3 years ago
Can you please help me with this​
Tatiana [17]

Answer:

Dot plot

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Each dot on on 0.84 represents each plane. 5 planes had a average cruising speed of 0.84.

4 0
3 years ago
-5m=4-6m I can't figure out the problem. I need help.
r-ruslan [8.4K]
-5m = 4 - 6m....add 6m to both sides
6m - 5m = 4
m = 4 <==
5 0
3 years ago
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