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Mkey [24]
3 years ago
6

(1) 2y×5x(7÷18)-1+3?And (2) 45÷28(3x+6y)=

Mathematics
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

not really sure for number one

1. 1.56y × 3.9x

2. 4.8x + 9.6y

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Could someone please explain how to solve for the area?
mixas84 [53]

9514 1404 393

Answer:

  779.4 square units

Step-by-step explanation:

You seem to have several problems of this type, so we'll derive a formula for the area of an n-gon of radius r.

One central triangle will have a central angle of α = 360°/n. For example, a hexagon has a central angle of α = 360°/6 = 60°. The area of that central triangle is given by the formula ...

  A = (1/2)r²sin(α)

Since there are n such triangles, the area of the n-gon is ...

  A = (n/2)r²sin(360°/n)

__

For a hexagon (n=6) with radius 10√3, the area is ...

  A = (6/2)(10√3)²sin(360°/6) = 450√3 ≈ 779.4 . . . . square units

8 0
3 years ago
Read 2 more answers
Which relationships have the same constant of proportionality between y and x as the equation y
sdas [7]

Answer:

I'm not too good at this but I got 10/4??

Step-by-step explanation:

please let me know if I'm right!

6 0
3 years ago
Pls help ASAP! I will mark the brainliest (IF I GET IT RIGHT)
Gelneren [198K]

Answer:

V=288π      

288*3.14=904.32

Step-by-step explanation:

V=4/3π (6)^{3}

V=4/3π 216

V=4π72

V=288π

288*3.14=904.32

4 0
3 years ago
of the 88 keys on a piano,52 are white a.what friction of a piano's keys are white? b.what is the ratio of black keys to white k
Basile [38]

Answer:

52/88 or simplifed 13/22 and the ratio is 52:36

Step-by-step explanation:

8 0
3 years ago
Can someone help me with this problem quickly?
kaheart [24]
I don’t know if I’m correct but:

120➗100=1.2

Which could mean that the x could be 1.2

(I’m not sure because I haven’t done this in a long time)
(Sorry if it’s wrong)
4 0
3 years ago
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