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Talja [164]
4 years ago
15

Math question please show work. If you get this right I will mark you as a brainliest

Mathematics
2 answers:
Sever21 [200]4 years ago
7 0
The answer is 20 because if you add all of the numbers up and divide by three you get 20
cricket20 [7]4 years ago
5 0

Use Cosine Rule

12^2 = 18^2 + 28^2 - 2*18*28* cos C

cos C = (12^2 - 18^2 - 28^2) / (-2*18*28)

= 0.95635

m < C = 17 degrees

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fredd [130]

Answer:

12

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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A rectangular field with an area of 5000m^2 is enclosed by 300m of fencing. Find the dimensions of the field? How?
garri49 [273]
Area of field=xy=5000
perimeter of field=2(x+y)300
x+y=150
x=150-y
y(150-y)=5000
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3 years ago
Plz, answer this it is really easy.
dimulka [17.4K]

Answer:

v = 17.4 meters

Step-by-step explanation:

This is a triangle with height (red dotted line) given.

The area of a triangle is given by the formula:

A=\frac{1}{2}bh

Where

A is the area

b is the base length

h is the height

Given height = 12, and

area = 104.4

THe base is labeled as "v", so we find v by replacing into formula:

A=\frac{1}{2}bh\\104.4=\frac{1}{2}(v)(12)\\104.4=6v\\v=\frac{104.4}{6}\\v=17.4

The base, v, is 17.4 meters

7 0
3 years ago
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