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Gennadij [26K]
3 years ago
13

Which type of triangle will always have exactly 1-fold reflectional symmetry?

Mathematics
2 answers:
Maslowich3 years ago
6 0
Its <span>isosceles triangle</span>
anygoal [31]3 years ago
3 0

Answer:

isosceles triangle

Step-by-step explanation:

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alex reads 12 pages. jenna reads 15 pages in 12 minutes. they are both reading 60- page magazine who will finish reading first
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Alex will finish reading first
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3 years ago
Find the radius of the circle circumscribed around an equilateral triangle, if the radius of the circle inscribed into this tria
ss7ja [257]

Answer:

20 cm

Step-by-step explanation:

Let a cm be the length of the side of equilateral triangle.

Use formula for the radius of inscribed circle into the equailteral triangle:

r_{inscribed}=\dfrac{a\sqrt{3}}{6}

Hence,

\dfrac{a\sqrt{3}}{6}=10\Rightarrow a=\dfrac{60}{\sqrt{3}}

Now, use formula for the circumscribed circle's radius:

R_{circumscribed}=\dfrac{a\sqrt{3}}{3}

Therefore,

R_{circumscribed}=\dfrac{\frac{60}{\sqrt{3}}\cdot \sqrt{3}}{3}=20\ cm

6 0
4 years ago
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Ben bought a desk for 249.99. The sales tax rate was 6.25. How much did ben pay for the desk. Round your answer to the nearest c
dexar [7]
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249,99
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8 0
3 years ago
If f(x) = x2 + 1, find f(a + 1).<br> a2+2<br> a2+a+1<br> a2+ 2a + 2
torisob [31]

Answer:

a^2 + 2a + 2

Step-by-step explanation:

replace x with (a +1) everywhere in the equation

f(a+1) = (a+1)^2 + 1

➡

a^2 + 2a + 1 + 1

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4 years ago
If 5x + 2 = 17, then 12x =____?
tensa zangetsu [6.8K]

36

Step-by-step explanation:

5x is 15

x is 3

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7 0
3 years ago
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