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WINSTONCH [101]
3 years ago
14

Help ASAP and EXPLAIN!!!!!!!

Mathematics
1 answer:
Talja [164]3 years ago
6 0

Answer:

the last one

Step-by-step explanation:

follow the lines in the order of the letters. look at each corner showering that the angle = 90°. the last option is the only one that proves that it is a right angle.

hope this helps

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What is the approximate circumference of a circle with a radius of 6.5 meters? Use π ≈ 3.14. 13 meters 20.4 meters 40.8 meters 1
natka813 [3]
Circumference = 2πR = 2×3.14×6.5 = 40.82m
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7th grade math help me pleaseeee
timurjin [86]

Answer:

Step-by-step explanation:

its really simple

just use your brain

4/4 makes 1 whole and 12-11=1 we need to convert the fraction into a whole number. So what over 4 makes 11 wholes? just do 4x11=44 and 44/4=11 and 12-11=1 just do the same for the other ones

3 0
3 years ago
Please help anyone and explain please
umka2103 [35]

So if you distribute 4 in the first parentheses, you get 12x+20y+8z.

Then you distribute 3 in the second parentheses. You'll get 3x-3z. That all equals 12x+20y+8z+3x-3z.

Now you have to start combining numbers with the same variable. Start with x. 12x+3x is 15x.

y has no other common variable, it's left alone.

8z-3z is 5z

All together now with the numbers in simpler form, the equation is 15x+20y+5z

Jenna's would be the right answer because when you distribute 5 in her answer you get 15x+20y+5z

5 0
3 years ago
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Radius of a sphere that has a surface area 12.56in2 use 3.14
enot [183]
\bf \textit{surface area of a sphere}\\\\
A=4\pi r^2\qquad 
\begin{cases}
r=radius\\
-----\\
A=12.56
\end{cases}\implies 12.56=4\pi r^2
\\\\\\
\cfrac{12.56}{4\pi }=r^2\implies \sqrt{\cfrac{12.56}{4\pi }}=r
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14?
17-12=5
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3 years ago
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