The triangles are similar by the SSS (side-side-side) similarity theorem because the sides of the two triangles are in proportion (5/15 = 3/9 = 4/12)
Hope this helps =)
Answer: X = 7.
Step-by-step explanation: Move all terms that don't contain x to the right side and solve.
<em>I'll go step-by-step.</em>
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1. Add 5 to <u>both</u> sides. 6x-(5+5)=37+5
2. Simplify 6x=42
3. Divide <u>both</u> sides by 6. 
4. Then simplify/Divide. 42 / 6 = 7
That's how you get 7!
X = 7
Which one do you need help on
4.6
To have as result 5 as average that means that all the numbers together must add 25 But it is 23
It USA little more than 4 and a little less than 5. 4x5 = 20. 5x5= 25
The difference is 5 3 is a little more than 2.5 So It makes sense that is 4.6 and no 4.5
169.65mm
A=2πrh+2πr2=2·π·3·6+2·π·32≈169.646