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OleMash [197]
3 years ago
12

If a•b=b, what must the value of a be?

Mathematics
1 answer:
Mila [183]3 years ago
8 0

Answer: I think f

Step-by-step explanation:

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To the nearest tenth, find the perimeter of ∆ABC with vertices A(-1,4), B(-2,1) and C(2,1).
swat32

First we need to find the length of each side of the triangle , and for that we need to use the distance formula, that is
d =\sqrt{(x_{2} -x_{1})^2 +(y_{2} -y_{1})^2}
AB = \sqrt{(1-4)^2 +(-2+1)^2}= \sqrt{10}
\sqrt{BC} = \sqrt{(1-1)^2 + (2+2)^2}=4
Perimeter is the sum of all sides.
Perimeter = AB + BC + AC = \sqrt{10}+4 +\sqrt{18}
Perimeter= 11.4

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A triangle has a side with 3cm and a side with 2cm, what's the other side?
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HeLp pLeAsE
zhenek [66]

Answer:

29.655

Step-by-step explanation:

Adding a negative number to a positive number is easy.

Subtract -3.095 from 32.750 which equals 29.655.

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