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3 years ago

3x-x+15=30-3x what is the answer?

Mathematics

2 answers:

bulgar [2K]3 years ago

6 0

x = 3

If you want an explanation, please leave a comment (sorry I'm kinda busy right now)

larisa86 [58]3 years ago

4 0

Take all x terms on one side and all numbers on the other side, and simplify.
x = 3

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garik1379 [7]

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2 years ago

A circle has a diameter with endpoints at 15 + 25i and –25 – 17i. Which point is also on the circle? –15 +21i 0 + 0i 15 + 17i 16

Tamiku [17]

Answer:

Option 4 : 16+24i

Step-by-step explanation:

Given a circle has a diameter with end points at(15+25i) and (-25-17i)

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Out of given four points to find which point lies on the circle

If a point lies on the circle then it would have distance from centre equal to radius.

Radius = distance between two given points/2

= $\frac{1}{2} \sqrt{(15+25)^2+(25+17)^2} \\=\frac{58}{2} \\=29$

Let us calculate distance form each point.

i)-15+2i: distance from -5+4i= 10.19

ii) 0+0i : distance from -5+4i = 6.40

iii) 15+17i : Distance from -5+4i = 23.85

iv) 16+24i: distance from -5+4i= 29

Hence only 4th point lies on the circle

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3 years ago